KR100531624B1 - Ultra WideBand Inverted L Antenna Apparatus - Google Patents

Abstract

The present invention relates to an ultra-wideband L-type antenna device, which is an ultra-wideband L-type antenna device for assisting in the transmission and reception of radio waves of electronic devices inside a wireless communication terminal. An ultrawideband inverted L antenna, wherein the ultrawideband inverted L antenna is a rectangular parallelepiped of non-conductive material; A conductor formed on two continuous surfaces of the dielectric; And a feeder for feeding power from the electronic elements to the dielectric; And b) a PCB having one side formed of a metal conductor portion, wherein the ultra wide band L antenna is protruded out of the conductor portion of the PCB so as to protrude more than half with respect to the longitudinal direction of the ultra wide band L antenna. . According to the present invention, the antenna efficiency, the +/- 1dB gain deviation, and the S11 parameter characteristics are all ultra-wideband characteristics of 70% or more, and thus can be used as an antenna for a terminal and a base station for an ultra-wideband communication method such as a UWB system. . In addition, it is possible to use as an all-in-one antenna for CDMA and OFDM, a PCS and cellular terminal, a GSM and CDMA terminal, a PCS and IMT-2000 terminal, and a single antenna for various services. do.

Description

Ultra-wideband L type antenna device {Ultra WideBand Inverted L Antenna Apparatus}

The present invention relates to an inverted L antenna (Inverted L antenna), more specifically, to maintain the ultra-wideband characteristics and at the same time can be manufactured with a low height, the ultra-wideband that the radiation pattern can be omnidirectional in two dimensions An inverse L-type antenna device.

In ultra wideband (UWB) systems, which have a lot of interest in recent communication fields, an antenna having a wide ultra wideband characteristic is required because an impulse signal must be copied and received into a space.

Conventional ultra-wideband antennas can be used by using thick elements such as twin-shaped antennas, discon antennas, biconical antennas, and diamond antennas, or spread in a triangular structure like a bow-tie antenna installed directly on a PCB. A thin structure, or a structure in which a transmission line itself spreads, such as a TEM horn antenna or a Lombic antenna, or an array of different size elements such as an algebraic antenna, or multiple cylinders such as a sleeve dipole antenna. Antennas with rounded structures, such as spiral or helical antennas, are used.

An antenna having such a structure has a problem that it is difficult to carry because of its large size.

Other ultra-wideband antennas include U-slot planar antennas and antennas using radio wave absorbers.

However, for the mobile communication, it is very important that the antenna itself has omni-directional characteristics in two dimensions because it must communicate regardless of front, rear, left and right. In this respect, U-slot planar antennas are very difficult to achieve omnidirectional characteristics in two dimensions due to the PCB, but are also limited in frequency bandwidth.

In addition, the radio wave absorber antenna manufactured by covering the entire surface of the radiation surface of the antenna has a problem that it is difficult to use as a UWB antenna due to the dispersion of radio waves.

Therefore, the antennas that can be utilized as portable UWB antenna systems are very limited.

On the other hand, the antenna having the ultra-wideband characteristics can be utilized in various wireless communication fields as well as UWB system. For example, multiple antennas can be transmitted and received by one antenna, such as a cellular and personal computer (PCS) antenna, a personal and IMT-2000 antenna, a cellular and GPS antenna, a vehicle integrated antenna, a digital broadcast and a cellular antenna. That has the advantage. It can also be used as an antenna for wireless cards in computers.

As described above, the conventional ultra-wideband antenna capable of various applications is not only limited by the size but also has a problem that its radiation pattern does not have omnidirectional characteristics in two dimensions.

1 is a structural diagram of a conventional chip type inverted L antenna, (a) is an overall perspective view, (b) is a structural diagram of a conductor plate, and (c) is a structural diagram of a non-conductor.

As shown in FIG. 1, a conventional chip type inverted L-type antenna is formed of a metal plate or metal coating made of metal such as copper, gold, silver, or the like on a dielectric 2, which is a non-conductive material made of a non-conductive material such as Teflon, ceramic, plastic, or the like. The conductor plate, which is 1), is continuously attached to two surfaces of the dielectric material 2, and is a chip type structure provided with a feed part 3 designed to be easily connected to a transmission line. The structure is very simple and easy to manufacture.

When the antenna device is constructed by installing the conventional chip type inverted L-type antenna on a PCB as shown in FIG. 2, impedance matching characteristics according to the width W, the antenna height H, and the antenna length L of the antenna are attached. It appears as shown in FIG.

As shown in Fig. 3, when the ratio of antenna width to antenna length (W / L) is constant, for example when W / L = 0.1, the ratio of antenna height to antenna length (H / L) Impedance matching can be seen that resonance occurs only when the ratio of antenna height to antenna length (H / L) is kept high.

In addition, since the -10dB bandwidth is 8% or less, it can be seen that the antenna characteristic also has a narrowband characteristic, and even if the communication of the narrowband characteristic is possible, it can be seen that the height of the antenna must be large.

In addition, in the case of such an antenna, most electric currents due to power feeding are formed in the element portion 9 adjacent to the power feeding portion 3, and radiation of electromagnetic waves is generated mostly by the current. At this time, since the direction of polarization of the electromagnetic wave to be radiated is determined by the direction of the current, the polarization direction in the space is formed in a direction perpendicular to the PCB as shown in FIG. Because of this, it is easy to see that the radiation pattern has a structure in which maximum power is transmitted from the side where the PCB is placed.

In addition, in order to make a mobile phone thin in most mobile phones, as shown in FIG. 6 (a), since the PCB is placed horizontally on the head of the mobile phone user, a polarization direction is generated perpendicularly to the direction in which the person stands. Inevitable Therefore, since the reception rate of the vertical polarization generated by the vertical antenna of the base station is decreased and the maximum power is transmitted in the front, rear, and up and down directions based on the head, two-dimensional omnidirectional communication with the base station is practically impossible.

Therefore, in the case of a mobile phone using the conventional inverted L-type antenna, it has narrow band characteristics, and the thickness of the antenna must be very large for impedance matching, and it is not possible to maintain a two-dimensional omnidirectional radiation pattern and have a horizontal polarization. The problem is inevitable. Therefore, it can be seen that the two-dimensional omnidirectional radiation pattern for maintaining communication with other users and base stations existing on the ground cannot be maintained and the vertical polarization cannot be maintained.

On the other hand, the prior art for the inverted L-type antenna is US Pat. No. 6,025,805 to Smith et al. This technology improves the mounting of the elements, which are disadvantages of the conventional inverted L and inverted F antennas, on the ground plane and improves the mounting of the elements on the ground plane. The center part is connected to the ground plane and is fed by feeding one end of the antenna element, which has the advantage that the antenna is realized without the manufacture of a separate element, but due to the curved shape of the antenna element, it is inefficient in communication by general vertical polarization. In addition, the antenna efficiency is maintained at 50%, there is a problem that the gain is difficult to maintain the ultra-wideband characteristics of more than 50%.

Accordingly, an object of the present invention is to solve the above problems, such as UWB system, CDMA, ultra-wideband communication terminal such as OFDM, PCS and cellular terminal, GSM and cellular terminal, PCS and IMT-2000 terminal It is small enough to be used as an antenna, a digital broadcasting and cellular antenna, and an antenna for a computer wireless card, and the radiation pattern is omnidirectional in two dimensions, ultra-wideband, easy to manufacture, and easy to install. It is to provide a simple ultra-wideband L-shaped antenna device.

Ultra-wide band L-shaped antenna device according to a feature of the present invention for achieving the above object,

An ultra-wideband L-type antenna device for assisting transmission and reception of radio waves of electronic devices inside a wireless communication terminal,

a) ultra-wideband L-type antenna for performing radio wave transmission and reception with an outside, wherein the ultra-wideband L-type antenna is a rectangular parallelepiped of non-conductive material; A conductor formed on two continuous surfaces of the dielectric; And a feeder for feeding power from the electronic elements to the dielectric; And b) a PCB having one side formed of a metal conductor portion, wherein the ultra wide band L antenna is protruded out of the conductor portion of the PCB so as to protrude more than half with respect to the longitudinal direction of the ultra wide band L antenna. .

Here, the ultra-wideband L-type antenna is characterized in that the electromagnetic wave is installed by using the excitation current formed in the dielectric portion protruding out of the PCB conductor portion of the dielectric.

In addition, the dielectric of the ultra-wideband L antenna is characterized in that the dielectric of a multi-layer structure having a different dielectric constant.

In addition, the dielectric is formed of three dielectric layers, characterized in that the dielectric constant of the upper dielectric and the lower dielectric is greater than the dielectric constant of the intermediate layer.

In addition, a specific electric wave absorber is inserted in place of the dielectric at a portion of the dielectric part of the ultra wideband L antenna that meets the edge of the PCB conductor part.

In addition, the ultra-wideband L-type antenna is characterized in that it is installed in the central portion spaced farthest from both corners on one side of the PCB conductor portion.

According to another aspect of the invention, the ultra-wideband L-type antenna device,

An ultra-wideband L-type antenna device for assisting transmission and reception of radio waves of electronic devices inside a wireless communication terminal,

a) at least one or more ultra-wideband L-shaped antennas for performing radio wave transmission and reception with external sources, wherein each ultra-wideband L-shaped antenna comprises a first dielectric of a rectangular parallelepiped made of a non-conductive material; A conductor formed on two continuous surfaces of the dielectric; And a feeder for feeding power from the electronic elements to the dielectric; And b) one side of the second dielectric is formed of a metal conductor portion, and the other side of the second dielectric forms a ground portion, the conductive portion corresponding to the corner portion of the number of the ultra-wideband L antennas among the edges of the second dielectric. And a PCB with a ground portion etched away in a particular shape, wherein each of the ultra-wideband L-type antennas is referenced to the longitudinal direction of the ultra-wideband L-type antenna perpendicular to the edge of the conductor portion of the PCB out of the conductor portion of the PCB. And more than half of the protruding ultra-wide band L-shaped antenna portions are respectively installed at corresponding corner portions so as to be positioned on the etched and remaining dielectric.

Here, the PCB has a rectangular shape, characterized in that one ultra wide band L-shaped antenna is installed at one corner portion of one side of the short side of the PCB side.

In addition, the PCB has a rectangular shape, characterized in that one of the ultra-wideband inverted L-shaped antenna is installed on each of both corner portions of one side of the short side of the PCB.

In addition, the PCB has a rectangular shape, and one ultra wide band L-shaped antenna is installed at each corner of two short sides of the PCB so as to be symmetrical with respect to the center of the PCB. It is characterized by.

In addition, the PCB has a rectangular shape, characterized in that one of the ultra-wideband inverted L-shaped antenna is installed on each of the two corners of the long side of the side of the PCB.

In addition, the PCB has a rectangular shape, characterized in that one ultra wide band L-shaped antenna is installed in each of the four corners of the PCB.

According to another aspect of the present invention, an ultra wideband L-type antenna device,

An ultra-wideband L-type antenna device for assisting transmission and reception of radio waves of electronic devices inside a wireless communication terminal,

a) two ultra-wideband L-shaped antennas for performing radio wave transmission and reception with external devices, wherein each ultra-wideband L-shaped antenna comprises: a first rectangular parallelepiped of non-conductive material; A conductor formed on two continuous surfaces of the dielectric; And a feeder for feeding power from the electronic elements to the dielectric; And b) a metal conductor portion on one side of the second dielectric having a quadrangular shape, and a ground portion on the other side of the second dielectric, and a conductor portion and a ground portion corresponding to the centers of both sides of the second dielectric facing each other. PCB removed and etched into a particular shape, wherein the two ultra-wideband L-type antennas are perpendicular to the edges of the conductors of the PCB out of the conductor portion of the PCB with respect to the longitudinal direction of the ultra-wideband L-type antenna More than half protruding and each protruding ultra wide band L-shaped antenna portion is installed so as to be positioned on the remaining etched dielectric.

According to another aspect of the present invention, an ultra wideband L-type antenna device,

An ultra-wideband L-type antenna device for assisting transmission and reception of radio waves of electronic devices inside a wireless communication terminal,

a) ultra-wideband L-shaped antenna for performing radio wave transmission and reception with an outside, wherein the ultra-wideband L antenna is made of a non-conductive material, is a rectangular parallelepiped, and has a concave groove formed in a longitudinal direction on one side thereof; A conductor formed on two continuous surfaces of the dielectric; And a feeder for feeding power from the electronic elements to the dielectric; And b) a PCB having one side formed of a metal conductor part, wherein the ultra wide band reverse L type antenna is installed by inserting a portion of the PCB conductor part into a groove formed in the dielectric, and the ultra wide band reverse L type out of the conductor part of the PCB. Installed to protrude more than half of the antenna relative to its longitudinal direction.

In this case, a specific electric wave absorber is inserted in place of the dielectric in a portion of the dielectric that meets the edge of the PCB conductor.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a structural diagram of an ultra-wideband L antenna according to an embodiment of the present invention, (a) is an overall perspective view, (b) is a structural diagram of a conductor plate, and (c) is a structural diagram of a non-conductor.

As shown in FIG. 4, the ultra-wideband L-shaped antenna 10 according to the embodiment of the present invention is formed of copper, gold on a dielectric 20 which is a non-conductive material made of a non-conductive material such as Teflon, ceramic, PVC, and acrylic. A metal plate made of a metal such as silver or a conductive plate 22 of metal coating 22 is continuously attached to two surfaces of the dielectric 20, and has a chip type structure in which a feed part 24 is designed to facilitate connection of a transmission line.

At this time, the dielectric 20 is composed of dielectric layers 20a, 20b, and 20c, each having a different dielectric constant, and the upper dielectric 20a has a high dielectric constant and an intermediate layer in order to reduce size and obtain ultra-wideband characteristics at a lower frequency band. The dielectric 20b has a low dielectric constant, and the lower dielectric 20c has a high dielectric constant.

On the other hand, while the dielectric 20 has been described as consisting of three layers of dielectric layers 20a, 20b, and 20c, the technical scope of the present invention is not limited thereto, and may be made of two or four or more dielectric layers. It may also be made of one layer or a single dielectric.

FIG. 5 is a structural diagram of an antenna device in which an ultra-wide band L antenna is mounted on a corner of a PCB in a linear protruding manner according to an embodiment of the present invention.

As shown in FIG. 5, the ultra-wideband L-shaped antenna device according to the embodiment of the present invention is formed by placing the ultra-wideband L-shaped antenna 10 so that a part thereof contacts the metal foil 42 of the PCB 40. do. That is, the bent antenna element portion 12 of the ultra-wideband L-shaped antenna 10 protrudes in a straight line more than half out of one corner of the PCB 40, precisely, one end of the metal foil 42 of the PCB 40. An ultra wideband L-shaped antenna 10 is located on the PCB 40.

Since the ultra wide band inverted L-shaped antenna 10 is mounted on the PCB 40 in this manner, the operation principle / operation characteristics of the ultra wide band inverted L-shaped antenna 10 itself compared to when the conventional inverted L antenna is mounted on the PCB. Appears differently. That is, the operation principle of the ultra wideband L-type antenna 10 is changed to the operation principle of the general monopole antenna rather than the conventional inverted L-type antenna. Therefore, while the conventional inverted L-type antenna device communicates by using an excitation current to the antenna element portion 9 positioned near the feeder section 3, in the ultra-wideband inverted L-type antenna device according to the embodiment of the present invention, the PCB is used. The communication is performed by using the current excited from the portion 12 of the antenna 10 protruding out of the 40.

In this case, as shown in FIG. 5, the polarization direction of the electromagnetic wave is changed due to the change in the main exiting area (converted to the antenna element portion 12 protruding from the antenna element portion placed near the feed portion). It is formed horizontally with 40. In the radiation pattern, it is easy to see that the maximum radiation occurs on the surface perpendicular to the PCB (YZ surface in FIG. 5).

As described above, in the embodiment of the present invention, as shown in FIG. 5, since the polarization direction is parallel to the PCB 40, an ultra-wideband L-type antenna device as shown in FIG. When used as an antenna for a polarization, the polarization direction has a vertical component (direction in which a person stands). At the same time, the power supply structure mounted on the PCB 40 maintains the existing inverted L-type antenna structure and can implement an ultra-wideband L-type antenna device that is easy to install.

Meanwhile, in the case of the general monopole antenna, an image plane perpendicular to the antenna element must be secured, but in the case of the ultra-wideband L-type antenna device according to the embodiment of the present invention, the image plane is not required. .

In addition, in the present invention, since the electromagnetic wave is radiated using the excitation current of the protruding antenna element portion 12, the antenna height can be lowered as much as possible, unlike the conventional inverted L-type antenna. If it is to be made as thin as a mobile phone / wireless card, it is very important to secure this characteristic.

On the other hand, when using the ultra-wideband L-shaped antenna device according to an embodiment of the present invention in a mobile phone as shown in Figure 6 (b), the user maintains communication with other users and base stations existing on the ground when using the ear It can be seen that the polarization directions coincide with each other, and at the same time, the two-dimensional omnidirectional radiation pattern is directed toward the base station like a general mobile phone antenna (whipped antenna, conical antenna, etc.).

In the case of the ultra-wideband L-type antenna device according to the exemplary embodiment of the present invention, impedance matching characteristics according to the width W, the antenna height H, and the antenna length L of the antenna are shown as shown in FIG. 7.

FIG. 7 shows impedance matching characteristics when the dielectric 20 of the ultra-wideband L antenna 10 is composed of a single dielectric and the antenna height H is low (H / L = 0.1, W / L = 0.1).

Referring to FIG. 7, it can be seen that the ultra-wideband characteristic is very different from the narrowband characteristic of the conventional inverted L-type antenna illustrated in FIG. 3. This ultra-wideband characteristic disturbs the edge electromagnetic fields of the PCB 40 adjacent to the ultra-wideband L-shaped antenna 10, and causes currents to be induced together in the PCB metal foil 42 near the antenna 10. It is p. Therefore, the PCB edge 44 intersecting with the antenna 10w must be placed close to the antenna 10 to operate together to exhibit ultra-wideband characteristics. Such ultra-wideband characteristics appear when the height H of the antenna is about 0.3 times or less based on the length L of the antenna. That is, if H / L ≤ 0.3, the ultra-wideband characteristics are shown, and the length determined according to the frequency is fixed due to the characteristics of the inverted L-type antenna. Compared to the type antenna, the height is reduced to 0.3 times or less.

On the other hand, in the results of Figure 7 can be seen that the -10dB bandwidth is secured more than 70% based on the center frequency. Therefore, it can be seen that impedance matching is performed in a very wide band.

FIG. 8 is a diagram illustrating antenna efficiency bandwidth characteristics of 90% or more for each frequency of the ultra wideband L-type antenna device according to an exemplary embodiment of the present invention, and FIG. 9 is a gain bandwidth characteristic of +/- 1dB (2dB) for each frequency. It is a figure which shows.

Referring to FIG. 8, it can be seen that 70% or more of the frequency bandwidth is secured. Referring to FIG. 9, it can be seen that +/- 1dB (2dB) gain bandwidth of 70% or more is secured for each frequency. Therefore, it can be seen that the ultra wide band L-type antenna according to the embodiment of the present invention can obtain ultra wide band characteristics of 70% or more. This ultra-wideband characteristics can solve the problem that the conventional inverted L-type antenna device was not available in the UWB wireless communication, it is also proved that a variety of communication with a single antenna.

In the case of utilizing such characteristics in the radio, as a result of examining the phase characteristics of the two radios, the fluctuation of the phase is observed in the 4.5 GHz band as shown in FIG. 10. This phenomenon is caused by a sharp edge reflected wave resonance (high Q factor resonance) because the antenna 10 is located near the edge of the PCB metal foil 42, which may cause a deterioration in the performance of the UWB system.

To solve this problem, as shown in FIG. 11, a small radio wave, such as a small ferrite, is lost at a point where the dielectric 20 of the ultra wideband L-shaped antenna 10 meets the PCB edge 44. This can be solved by inserting the absorber 21 to remove the edge reflection wave.

When using this method, care should be taken to remove only 4.5 GHz edge echo resonance, so that the radio absorber 21 inserted into the ultra wideband L-shaped antenna 10 should be made very thin and absorbed at 4.5 GHz. It should be effective.

In addition to this method, the omnidirectional ultra-wideband L-type antenna device shown in FIG. 12A is applied by applying the principle that the size of the edge reflected wave decreases as the antenna 10 moves away from the edge of the PCB 40. Likewise, the antenna 10 may be improved by moving the antenna 10 to the center of one side of the PCB 40.

In addition, in the case of (a) of FIG. 12, since the antenna 10 is located at the center, the radiation pattern has a two-dimensional omnidirectional characteristic with a wide 3dB angular width. This form may be inconvenient in use because the antenna 10 is located in the center.

In order to improve this, as in the linear non-protrusion edge-mounted ultra-wideband L-type antenna device shown in FIG. 12B, the ultra-wideband L-type antenna 10 has a straight non-protrusion at the edge of the PCB 40. Mounted. In this case, as shown in (b) of FIG. 14, the mobile phone / wireless card can be mounted without an antenna protrusion out of the mobile phone. This is a form to improve the inconvenience of using the antenna protruding. That is, after etching the ground portion 46 and the metal foil 42 of the PCB 40 as shown in (b) of FIG. 12 so that only the corner portion 48 of the PCB 40 remains, the protruding portion of the antenna 10 This is located in all of the corner portion 48.

On the other hand, Figure 12 (c) shows a linear non-progressive transmission and reception edge-mounted ultra-wideband inverted L-type antenna device capable of separating the transmission and reception signals without using a duplexer can be used in a mobile phone / wireless card.

Such a transmission / reception split type antenna device may be placed symmetrically for convenience as shown in (c) of FIG. 12 or vertically symmetrically as in the linear transmission / reception split omni-directional ultra-wideband L-type antenna device shown in (d) of FIG. You can also let go.

In case (c) of FIG. 12, a diagonal shape is shown to minimize the coupling amount between the two antennas 10 and 11. 12 (d) shows an ultra-wideband L-type antenna device capable of transmitting and receiving separation and excellent in two-dimensional omnidirectional characteristics. In this structure, since excessive protrusion of the antennas 10 and 11 is very restricted in use, the super-wide band L-shaped antennas 10 and 11 are etched in the center of the PCB 40 up and down symmetrically. Install.

13 is a view showing another ultra-wideband L-type antenna device according to an embodiment of the present invention, (a) is a diagonal edge-mounted antenna device, (b) is a diagonal upper transmission and reception separate mounted antenna device , (C) is a diagonal side transmitting / receiving mounted antenna device, and (d) is a diagonal diversity transmitting / receiving mounted antenna device.

In the form shown in FIG. 13, the ground portion 46 and the metal foil 42 are etched and installed at the corners of the PCB 40 at the same time. The metal foil 42 and the ground portion 46 of the PCB 40 are installed. Only the edge triangular part 49 of the () is cut off (etched), and the dielectric part 45 is kept as it is to install the antenna 10 diagonally.

In this case, as shown in (c) of FIG. 14, it can be seen that the antenna 10 has a structure installed into a mobile phone.

In addition, as shown in (b) of FIG. 15, the direction of the antenna 10 during the call is located more vertically than in the case of the method of FIG. 5 shown in (a) of FIG. The antenna efficiency for the call can be increased. In addition, if you install a built-in appearance is good and the user can carry the mobile phone can improve the inconvenience caused by the antenna protrusion.

Due to this characteristic structure, when used as an antenna for a wireless card of a computer, it is easy to mount the antenna inside the wireless card has a structure that can eliminate the problems caused by the antenna protruding.

In the case of (b) of FIG. 13, an oblique upper transmission / reception type ultra wide band L-type antenna device is manufactured to be used as a transmission / reception antenna, and the polarization direction of the transmission / reception signal is perpendicular to the separation distance of the transmission / reception antenna. In this case, the coupling amount between the transmitting and receiving antennas can be reduced.

In case (c) of FIG. 13, an oblique side transmitting / receiving-mounted ultra-wideband L-type antenna device is manufactured to be utilized as a transmitting / receiving-separable antenna, and ensures a maximum separation distance of the transmitting / receiving antenna in a structure and simultaneously transmits and receives a signal. It is possible to reduce the amount of coupling between the transmitting and receiving antennas by placing the polarization directions of the antennas perpendicular to each other.

Lastly, in FIG. 13D, the diagonal diversity transmission / reception type ultra wideband L-type antenna device, in addition to the function of separating transmission and reception, four antennas 10 are arranged symmetrically in the left and right and up and down symmetrically for diversity problem. The structure that solves is shown.

These structures are designed to minimize the amount of coupling by allowing the transmitting and receiving antennas to be perpendicular to each other and securing the separation distance of the transmitting and receiving antennas in a communication method in which transmission and reception signals are difficult to separate, such as a UWB system.

In the structures of (c) and (d) of FIG. 12, and (b) and (c) of FIG. 13, two different types of communication services may be provided when two antennas have different resonance frequencies. For example, the cellular phone and Bluetooth communication can be utilized when installed in the PCB 40, in addition to the cellular phone or PCS phone and the wireless LAN can be used when installed in the PCB 40.

On the other hand, Figure 16 is a view showing another structure of the ultra-wideband L-shaped antenna that is easy to mount the PCB, (a) is a whole perspective view, (b) is a structural diagram of the conductor plate, (c) is a non-conductor And a structure diagram of a radio wave absorber inserted into a nonconductor.

As shown in FIG. 16, the ultra-wide band L-shaped antenna 10, which is easy to mount the PCB, has a groove 23 in the dielectric part 20, and one side of the PCB 40 is inserted into the groove 23. It can be fixed and mounted.

In this case, as shown in FIG. 17, the antenna 10 is fixed to the PCB 40, thereby minimizing antenna damage during use, and has an advantage of easy mounting.

Meanwhile, the electromagnetic wave absorber 21 is inserted to remove the edge reflected wave of the PCB 40 as described with reference to FIG. 11.

In addition, by installing a dielectric screw on the back of the PCB 40, a method of fixing a screw groove in the center of the dielectric 20 of the antenna may be used.

Although the present invention has been described with reference to the most practical and preferred embodiment, the present invention is not limited to the above-described embodiment, but also includes various modifications and equivalents within the scope of the following claims.

According to the present invention, the antenna efficiency, the +/- 1dB gain deviation, and the S11 parameter characteristics are all ultra-wideband characteristics of 70% or more, and thus can be used as an antenna for a terminal and a base station for an ultra-wideband communication method such as a UWB system. .

In addition, it is possible to use as an all-in-one antenna for CDMA and OFDM, a PCS and cellular terminal, a GSM and CDMA terminal, a PCS and IMT-2000 terminal, and a single antenna for various services. do.

In addition, since the polarization direction can be changed and the power pattern can be changed due to the change of the radiated electromagnetic wave excitation area, when mounted on a mobile phone, the polarization between the user and the base station can be vertically matched. Signals can be sent and received.

In addition, it is easy to manufacture and can be easily mounted on the PCB to lower the manufacturing cost, and when mounted on the edge of the PCB can provide an antenna built-in mobile phone because the antenna is installed in the mobile phone case.

1 is a structural diagram of a conventional inverted L-type antenna, (a) is an overall perspective view, (b) is a structural diagram of a conductor plate, and (c) is a structural diagram of a non-conductor.

2 is a perspective view of an antenna device in which a conventional inverted L-type antenna is mounted on a PCB.

3 is a view showing the standing wave ratio bandwidth characteristics according to the antenna height change in the conventional inverted L-type antenna device.

4 is a structural diagram of an ultra-wideband L antenna according to an embodiment of the present invention, (a) is an overall perspective view, (b) is a structural diagram of a conductor plate, and (c) is a structural diagram of a non-conductor.

FIG. 5 is a structural diagram of an antenna device in which the ultra-wideband L antenna shown in FIG. 4 is mounted in a straight protrusion on an edge of a PCB.

6 is a diagram illustrating polarization comparison when an inverted L-type antenna is mounted on a mobile phone, (A) is a case of a conventional inverted L-type antenna device, and (B) is an ultra-wideband inverse according to an embodiment of the present invention. In the case of an L-type antenna device.

FIG. 7 is a diagram illustrating standing wave ratio bandwidth characteristics of the ultra-wideband L-type antenna device shown in FIG. 5.

FIG. 8 is a diagram illustrating 90% antenna efficiency bandwidth characteristics of the ultra wideband L-type antenna device shown in FIG. 5.

FIG. 9 is a diagram illustrating a +/- 1dB gain bandwidth of the ultra wideband L-type antenna device shown in FIG.

FIG. 10 is a diagram illustrating S21 transmission and reception phase parameter characteristics when two ultra-wideband L antenna devices shown in FIG. 5 are separated by 20 cm from each other.

FIG. 11 is a view illustrating the insertion of a radio wave absorber into the ultra-wideband L-type antenna device shown in FIG. C) is a perspective view of the conductor portion, and (d) is a diagram showing a state in which the dielectric and the radio wave absorber are separated.

12 is a view showing an ultra-wideband L-shaped antenna device according to another embodiment of the present invention, (a) is an omnidirectional ultra-wideband L-shaped antenna device, (b) is a straight non-protruding edge-mounted candle A wideband reverse L-type antenna device, (C) is a linear non-progressive transmit / receive split edge mounted ultra-wideband inverted L-type antenna device, and (D) represents a linear transmit / receive omnidirectional omni-directional ultra-wideband inverted-L antenna device.

13 is a view showing an ultra-wideband L-type antenna device according to another embodiment of the present invention, (a) is a diagonal edge-mounted ultra-wideband L-type antenna device, (b) is a diagonal upper transmission and reception separate type An ultra-wideband inverted L-type antenna apparatus, (C) is a diagonal side transmit / receive separate ultra-wideband inverted L-type antenna apparatus, and (d) represents a diagonal diversity transmit / receive-type ultra-wideband inverted L-type antenna apparatus.

14 is a mobile phone mounting road of the ultra-wideband L-type antenna device according to an embodiment of the present invention, (a) is the case of the ultra-wideband L-type antenna device shown in Figure 5, (b) is a (B) shows the case of the ultra-wideband L-type antenna device shown in (b), and (c) shows the case of the ultra-wideband L-type antenna device shown in (a) of FIG.

FIG. 15 is a view illustrating a polarization direction of a super wide band inverted L antenna device according to an embodiment of the present invention during a call while being installed in a mobile phone, and (a) is an ultra wide band inverted L antenna device shown in FIG. In the case of (b), (b) shows the case of the ultra wide band L-type antenna device shown in (a) of FIG.

16 is a structural diagram of an ultra-wideband L antenna according to still another embodiment of the present invention, (a) is an overall perspective view, (b) is a structural diagram of a conductor plate, and (c) is separation of a dielectric and a radio wave absorber A perspective view is shown.

FIG. 17 is a structural diagram of an antenna device in which the ultra-wideband L antenna shown in FIG. 16 is mounted on a PCB.

Claims (20)

An ultra-wideband L-type antenna device for assisting transmission and reception of radio waves of an electronic device inside a wireless communication terminal, a) an ultra wideband L-shaped antenna for performing radio wave transmission and reception with an external device, A rectangular parallelepiped dielectric made of a non-conductive material; A conductor formed on two continuous surfaces of the dielectric; And A feeder for feeding power from the electronic elements to the dielectric Including; And b) Printed Circuit Board (PCB) having one side formed of a metal conductor portion, wherein the ultra wideband L antenna is installed to protrude more than half of the PCB portion based on the length direction of the ultra wideband L antenna. － Including; Performing radio wave transmission and reception through electromagnetic waves radiated using excitation current formed in the ultra wide band L-shaped antenna portion protruding out of the conductor portion of the PCB. An ultra wideband L-type antenna device, characterized in that. The method of claim 1, And a specific wave absorber is inserted in place of the dielectric at the edge of the PCB conductor part of the dielectric part of the ultra wide band L antenna. The method of claim 2. And the dielectric of the ultra-wideband L antenna is a multilayer dielectric having different dielectric constants. The method of claim 3, And the dielectric material is formed of three dielectric layers, and the dielectric constants of the upper and lower dielectric layers are larger than those of the middle layer. The method of claim 2, And the height of the ultra wideband L antenna is less than 0.1 times less than the length of the ultra wideband L antenna. delete The method according to any one of claims 1 to 5, The ultra-wideband L-type antenna device is installed in the central portion spaced farthest from both corners on one side of the PCB conductor portion. An ultra-wideband L-type antenna device for assisting transmission and reception of radio waves of an electronic device inside a wireless communication terminal, a) at least one or more ultra wideband L-shaped antennas which perform radio waves to and from the outside, wherein each A cuboid first dielectric made of a non-conductive material; A conductor formed on two continuous surfaces of the dielectric; And A feeder for feeding power from the electronic elements to the dielectric Including; And b) one side of the second dielectric is formed of a metal conductor portion, the other side of the ground portion, and the conductive portion corresponding to the corner portion of the number of the ultra-wideband L-shaped antenna among the corners of the second dielectric and Printed Circuit Board (PCB) with the ground portion etched away in a particular form, wherein each of the ultra wideband L-type antennas extends out of the PCB portion perpendicular to the edge of the PCB portion of the PCB. More than half protruding relative to the longitudinal direction, each protruding ultra wide band L-shaped antenna portion is provided at each of the corner portions thereof so as to be located on the remaining etched dielectric. Including; Performing radio wave transmission and reception through electromagnetic waves radiated using excitation current formed in the ultra wide band L-shaped antenna portion protruding out of the conductor portion of the PCB. An ultra wideband L-type antenna device, characterized in that. The method of claim 8, The PCB has a rectangular shape, and the ultra wide band L-shaped antenna device, characterized in that one ultra-wide band L-shaped antenna is installed at one corner of one side of the short side of the PCB side. The method of claim 8, The PCB has a rectangular shape, and the ultra-wideband L-type antenna device, characterized in that one of the ultra-wideband inverted L-shaped antenna is installed at each of the corners of one side of the short side of the PCB. The method of claim 8, The PCB has a rectangular shape, and one ultra wide band L antenna is installed at each corner of two short sides of the PCB so as to be symmetrical with respect to the center of the PCB. Ultra wideband L-shaped antenna device. The method of claim 8, The PCB has a rectangular shape, and the ultra-wideband L-type antenna device, characterized in that one of the ultra-wideband inverted L-shaped antenna is installed at each of the two corners of the long side of the side of the PCB. The method of claim 8, The PCB has a rectangular shape, and the ultra-wideband L-shaped antenna device, characterized in that one of the four ultra-wideband L-shaped antennas are installed in each of the four corners of the PCB. The method according to any one of claims 8 to 13, And a specific wave absorber is inserted in place of the first dielectric part of the first dielectric part of the ultra wide band inverted L antenna instead of the first dielectric. The method of claim 14. And the first dielectric of the ultra wide band L antenna is a multilayer dielectric having different dielectric constants. The method of claim 15, And the first dielectric is formed of three dielectric layers, and the dielectric constant of the upper dielectric and the lower dielectric is greater than that of the intermediate layer. The method of claim 14, And the height of the ultra wideband L antenna is less than 0.1 times less than the length of the ultra wideband L antenna. An ultra-wideband L-type antenna device for assisting transmission and reception of radio waves of an electronic device inside a wireless communication terminal, a) two ultra-wideband L-shaped antennas which perform radio waves to and from the outside, where each A cuboid first dielectric made of a non-conductive material; A conductor formed on two continuous surfaces of the dielectric; And A feeder for feeding power from the electronic elements to the dielectric Including; And b) One side is formed of a metal conductor part around a second rectangular dielectric, and the other side forms a ground part, and the conductor part and the ground part corresponding to the centers of both side surfaces of the second dielectric face each other are specified. A printed circuit board (PCB) that has been etched away and removed, wherein the two ultra-wideband L-type antennas extend out of the conductor portion of the PCB perpendicularly to the edge of the conductor portion of the PCB. More than half protruding relative to each other, and each of the protruding ultra wide band L-shaped antenna portions is disposed so as to be positioned on the etched and remaining dielectric- Including; Performing radio wave transmission and reception through electromagnetic waves radiated using excitation current formed in the ultra wide band L-shaped antenna portion protruding out of the conductor portion of the PCB. An ultra wideband L-type antenna device, characterized in that. An ultra-wideband L-type antenna device for assisting transmission and reception of radio waves of an electronic device inside a wireless communication terminal, a) an ultra wideband L-shaped antenna for performing radio wave transmission and reception with an external device, A dielectric made of a non-conductive material, having a rectangular parallelepiped, and having a recess formed in a longitudinal direction on one side thereof; A conductor formed on two continuous surfaces of the dielectric; And A feeder for feeding power from the electronic elements to the dielectric Including; And b) a printed circuit board (PCB) having one side formed of a metal conductor portion, wherein the ultra-wideband L antenna is installed by inserting a portion of the PCB conductor portion into a groove formed in the dielectric, and inserting the candle out of the conductor portion of the PCB; Installed to protrude more than half of the length of the broadband inverted L antenna Including; Performing radio wave transmission and reception through electromagnetic waves radiated using excitation current formed in the ultra wide band L-shaped antenna portion protruding out of the conductor portion of the PCB. An ultra wideband L-type antenna device, characterized in that. The method of claim 19, And a specific wave absorber is inserted into the portion of the dielectric of the UWB antenna that meets the edge of the PCB conductor, instead of the dielectric.