CN201540960U - Multi-band antenna - Google Patents
Multi-band antenna Download PDFInfo
- Publication number
- CN201540960U CN201540960U CN 200920271214 CN200920271214U CN201540960U CN 201540960 U CN201540960 U CN 201540960U CN 200920271214 CN200920271214 CN 200920271214 CN 200920271214 U CN200920271214 U CN 200920271214U CN 201540960 U CN201540960 U CN 201540960U
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- Prior art keywords
- antenna
- antenna part
- frequency
- substrate
- electrically connected
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- Expired - Lifetime
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000012212 insulator Substances 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 23
- 230000005855 radiation Effects 0.000 claims description 17
- 230000005404 monopole Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims 2
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000004044 response Effects 0.000 description 10
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 230000006698 induction Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- Details Of Aerials (AREA)
- Waveguide Aerials (AREA)
Abstract
The utility model provides a multi-band antenna, comprising a base plate being an insulator, a grounding part fixedly installed at one end of the base plate, a first antenna part with high frequency resonance being a T-shaped metal film printed on the base plate, a second antenna part being an inverted T-shaped metal film printed on the base plate at one side of the first antenna part and electrically connected with the grounding part and coupled with the capacitor of the first antenna part to form a high frequency resonance loop, a third antenna part being a double inverted T-shaped metal film printed on the base plate at the other side of the first antenna part to form a low frequency resonance loop, and a signal feed-in wire electrically connected with the feed-in point of the first antenna part for transmitting the signals into a receiving and transmitting circuit.
Description
Technical Field
The present invention relates to a multi-band antenna, and more particularly to a multi-band antenna which has a small size, a simple manufacturing process, and an easy assembly, is suitable for various electronic devices, and can achieve an optimal frequency response of coupling energy induction.
Background
With the rapid development of wireless communication, no matter whether a portable computer or a mobile phone has been developed from dual frequency to multi-frequency, and multi-frequency is designed to process various signals, such as network, bluetooth, GPS, etc., but all these signals work in different frequency bandwidths and require corresponding antennas to cooperate.
In the conventional antenna, an inverted-F dual-band antenna is used to receive signals of a first frequency and a second frequency, and the antenna is provided with a first planar conducting element and a second planar conducting element, and the frequency width, impedance matching and gain of the antenna are adjusted by the shapes of the first planar conducting element and the second planar conducting element; however, the area of the second planar conducting element often affects the gain of the antenna, and if an antenna with a higher bandwidth is required, the substrate area of the antenna must be increased, so that the conventional antenna is limited by the space between the embedded devices, and thus the substrate area cannot be effectively and sufficiently increased, and the antenna cannot have a higher bandwidth; when the area of the second planar conducting element is too large, the contact between the second planar conducting element and the first planar conducting element is easily broken.
In the conventional antenna, the frequency width, impedance matching and gain are adjusted by the shape and the spacing of the conducting elements, but the effect is quite unstable, and the distance between the conducting elements is easy to cause poor signal reception in design, so that the effect of multi-frequency cannot be achieved; and the prior art has the defects that the induction resonance capability is easy to be insufficient, the voltage standing wave ratio is small, the circuit design is difficult to increase and the like, and the manufacturing process is complicated, the manufacturing cost is overhigh, and the installation is difficult.
Therefore, in view of the defects of the conventional multi-frequency antenna, the inventor has developed the present invention by studying and improving the defects.
Disclosure of Invention
The main object of the present invention is to provide a multi-band antenna, which is small in size, simple in manufacturing process, easy to assemble, suitable for various electronic devices, and capable of achieving optimal frequency response of coupling energy induction.
In order to achieve the above object, the present invention provides a multi-frequency antenna, including: a multi-frequency antenna, comprising:
a substrate, which is an insulator;
the grounding part is fixedly arranged at one end of the substrate and used for improving the radiation efficiency of the antenna;
a first antenna part which is a T-shaped metal film layer printed on the substrate, wherein the first antenna part is a main radiation area of a monopole antenna with high-frequency resonance so as to provide excitation frequency and energy source of the multi-frequency antenna;
a second antenna part printed on the substrate and located beside the first antenna part, the second antenna part having an extended branch section capacitively coupled with the first antenna part, the other branch section of the second antenna part being electrically connected with the grounding part to form a high-frequency resonance loop;
a third antenna part, which is a conjoined double-inverted-L shape and is a metal film layer printed on the substrate, the third antenna part is arranged at the other side of the first antenna part and is provided with an extended inverted-L-shaped branch section which is capacitively coupled with the first antenna part, and the other inverted-L-shaped branch section of the third antenna part is electrically connected with the grounding part to form a low-frequency resonance loop; and the number of the first and second groups,
a signal feed-in line, which is a coaxial cable, the main signal line is electrically connected with the feed-in point of the first antenna part, and the grounding line of the signal feed-in line is electrically connected with the grounding part for transmitting the signal to the receiving and transmitting circuit.
When the antenna is implemented, the radiation frequency band of the first antenna part is 3.3-3.9 gigahertz.
In practice, a corresponding distance of electrical insulation distance is formed between the first antenna part and the second antenna part to achieve the optimal frequency response of coupling energy induction, and the radiation frequency band of the second antenna part is 5.15-5.85 gigahertz.
In practice, a corresponding distance of electrical insulation distance is formed between the first antenna portion and the third antenna portion to achieve the optimal frequency response of coupling energy induction, and the radiation frequency band of the third antenna portion is 2.3-2.7 MHz.
Compared with the prior art, multifrequency antenna, small, the processing procedure is simple and easy, the assembly is easy, and be fit for each type of electronic equipment of collocation and use, and can reach the coupling energy response optimization frequency response.
Drawings
Fig. 1 is a schematic plan view of a substrate according to the present invention;
fig. 2 is a schematic view of an embodiment of the present invention.
Description of reference numerals: 1-a multi-frequency antenna; 10-a substrate; 11-a ground part; 12-a first antenna portion; 121-feed point; 13-a second antenna portion; 131-a branch section; 14-a third antenna portion; 15-signal feed-in line; 151-ground segment.
Detailed Description
In order to facilitate the understanding of the contents of the present invention and the effects achieved by the present invention, the following detailed description is given with reference to the accompanying drawings:
referring to fig. 1 and 2, the present invention provides a multi-band antenna 1, which includes: a substrate 10, a grounding portion 11, a first antenna portion 12, a second antenna portion 13, a third antenna portion 14, and a signal feed-in line 15; wherein,
the substrate 10 is an insulator; the grounding portion 11 is soldered on one end of the substrate 10 and is a metal aluminum foil, one end of which is electrically connected to the second antenna portion 13 and the other end is electrically connected to the third antenna portion 14, so as to improve the radiation efficiency of the antenna.
The first antenna part 12 is a T-shaped metal thin film layer printed on the substrate 10, and is a main radiation region where high-frequency resonance is a monopole antenna, and the radiation frequency band is 3.3 to 3.9 gigahertz (GHz) for providing excitation frequency and energy source of the multi-frequency antenna; and the first antenna portion 12 has a feeding point 121.
The second antenna portion 13 is an inverted-L-shaped metal thin film layer printed on the substrate 10 and located beside the first antenna portion 12, the second antenna portion 13 has an extended branch 131 capacitively coupled to the first antenna portion 12, and the other branch 132 is electrically connected to the ground portion 11 to form a high-frequency resonant loop for adjusting the left radiation impedance of the first antenna portion 12 and forming a corresponding distance a between the first and second antenna portions 12, 13 for forming an electrically insulating distance to achieve an optimal frequency response of coupling energy induction, so that the high-frequency resonant bandwidth of the first antenna portion 12 can be increased to provide loop radiation currents of the first and second antenna portions 12, 13 to ground to adjust the frequency range and radiation efficiency, and the radiation frequency band is 5.15-5.85 gigahertz (GHz).
The third antenna part 14 is a connected double inverted-L shape, which is formed by printing a metal film layer on the substrate 10 and is located at the other side of the first antenna part 12, the third antenna part 14 has an extended inverted-L shaped branch 141 capacitively coupled to the first antenna part 12, the other inverted-L shaped branch 142 is electrically connected to the ground part 11 to form a low frequency resonance loop, which is responsible for low frequency resonance, and a corresponding distance B of an electrical insulation distance is formed between the first and third antenna parts 12, 14 to achieve coupling energy induction optimized frequency response, so that the resonance bandwidth of the third antenna part 14 is increased, and a loop radiation current of the first and third antenna parts 12, 14 to the ground is provided, and the radiation frequency band is 2.3-2.7 gigahertz (GHz).
The signal feed-in line 15 is a coaxial cable, and its main signal line is electrically connected to the feed-in point 121 of the first antenna portion 12, and the ground line 151 of the signal feed-in line 15 is electrically connected to the ground portion 11 for transmitting the signal to the receiving and transmitting circuit.
The design is printed on the surface of the substrate 10 in the manufacturing process, so that the cost can be reduced, and the integration with a system circuit is also convenient; the bending shape of each antenna part and the layout of the substrate 10 can not only reduce the volume of the antenna and the substrate 10, but also reduce the inductance of the whole antenna and improve the capacitance characteristic by utilizing the coupling effect of each antenna part; and through the interval between every antenna portion, reach coupling energy response optimization frequency response to do benefit to receiving frequency, signal intensity and reach the biggest, make the multifrequency antenna effect reach better.
To sum up, the structure of the utility model is truly innovative, and can improve the efficacy compared with the prior art, and fully conforms to the legal patent requirements of novelty and progressiveness, and the application is proposed by law, and the application is approved by the citizen bureau to excite the utility model and feel moral and defecate.
The above embodiments are provided to explain the objects, features and functions of the present invention in detail, and it will be apparent to those skilled in the art that the embodiments may be partially changed or modified in view of the above description, and the essence thereof should be included in the scope of the claims of the present invention, and it should be noted first.
Claims (4)
1. A multi-frequency antenna, comprising:
a substrate, which is an insulator;
a grounding part fixedly arranged at one end of the substrate;
a first antenna part which is a T-shaped metal film layer printed on the substrate, wherein the first antenna part is a main radiation area of a monopole antenna with high-frequency resonance;
a second antenna part printed on the substrate and located beside the first antenna part, wherein the second antenna part has an extended branch section capacitively coupled with the first antenna part, and the other branch section of the second antenna part is electrically connected with the grounding part to form a high-frequency resonance loop;
a third antenna part, which is a conjoined double-inverted-L shape and is a metal film layer printed on the substrate and positioned at the other side of the first antenna part, wherein the third antenna part is provided with an extended inverted-L-shaped branch section which is capacitively coupled with the first antenna part, and the other inverted-L-shaped branch section of the third antenna part is electrically connected with the grounding part to form a low-frequency resonance loop; and the number of the first and second groups,
a signal feed-in line, which is a coaxial cable, the main signal line is electrically connected with the feed-in point of the first antenna part, and the grounding line of the signal feed-in line is electrically connected with the grounding part for transmitting the signal to the receiving and transmitting circuit.
2. The multi-band antenna of claim 1, wherein the first antenna portion radiates in a frequency range of 3.3-3.9 gigahertz.
3. The multi-band antenna of claim 2, wherein the first antenna portion and the second antenna portion form a corresponding distance of electrical isolation, and the radiation band of the second antenna portion is 5.15-5.85 gigahertz.
4. The multi-band antenna of claim 2, wherein the first antenna portion and the third antenna portion form a corresponding distance of electrical isolation, and the radiation band of the third antenna portion is 2.3-2.7 gigahertz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920271214 CN201540960U (en) | 2009-11-17 | 2009-11-17 | Multi-band antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920271214 CN201540960U (en) | 2009-11-17 | 2009-11-17 | Multi-band antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201540960U true CN201540960U (en) | 2010-08-04 |
Family
ID=42592416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920271214 Expired - Lifetime CN201540960U (en) | 2009-11-17 | 2009-11-17 | Multi-band antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201540960U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855465A (en) * | 2012-12-04 | 2014-06-11 | 智易科技股份有限公司 | Monopole antenna |
| TWI559615B (en) * | 2015-01-28 | 2016-11-21 | 亞旭電腦股份有限公司 | Multi-band antenna |
| CN111710964A (en) * | 2020-06-29 | 2020-09-25 | 上海创功通讯技术有限公司 | Antenna |
-
2009
- 2009-11-17 CN CN 200920271214 patent/CN201540960U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855465A (en) * | 2012-12-04 | 2014-06-11 | 智易科技股份有限公司 | Monopole antenna |
| TWI559615B (en) * | 2015-01-28 | 2016-11-21 | 亞旭電腦股份有限公司 | Multi-band antenna |
| CN111710964A (en) * | 2020-06-29 | 2020-09-25 | 上海创功通讯技术有限公司 | Antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100804 |