KR20110044578A - Coupling antenna - Google Patents

Abstract

The present invention relates to a coupling antenna for receiving multiple bands, and more particularly, to a coupling antenna for receiving broadcast over multiple bands. Coupling antenna according to the present invention is to add an additional conductor coupling portion surrounding the helical antenna to the appearance consisting of the rod antenna portion and the helical antenna portion used in the past, to provide an antenna that supports a plurality of bands with a minimum appearance deformation. It can work.

Description

Coupling Antenna

The present invention relates to a coupling antenna for receiving multiple bands, and more particularly, to a coupling antenna for receiving broadcast over multiple bands.

Recently, with the development of the high quality video contents industry, various broadcast communication methods have been introduced to transmit the high quality video to various terminals of the user with minimum video loss. Advances in antennas where signal reception is taking place are becoming prominent.

TDMB antenna that supports the terrestrial DMB broadcasting (TDMB) that is currently commercially available in such a broadcast communication method is required 38cm as the antenna length for 200MHz, which is the TMDB use frequency for stable broadcast reception. However, such an antenna length is too long to be used in a mobile terminal, and in order to simplify this, the overall antenna length is compensated by constructing a load antenna having a multi-stage antenna or by embedding a helical antenna in a specific structure.

However, even with such a configuration, the size of the antenna is relatively large in proportion to the size of the portable terminal, which is being simplified at present, and thus serves as a factor that hinders the overall portability and aesthetics of the portable terminal, which has recently been emphasized.

In order to overcome this problem, a TDMB antenna has recently emerged that combines the helical antenna and the load antenna to ensure overall length compensation and aesthetics. The configuration of the conventional TDMB antenna will be described in detail with reference to FIG. 1. As described above, a predetermined length portion of the antenna is constituted by the helical antenna (b), and the remaining portion is configured by the load antenna (a) to ensure the overall length of the antenna.

In particular, the helical antenna (b) configured at the lower end is designed to be configured to only partially compensate for the electrical length of the antenna is accommodated in the plastic structure, and does not emit a signal. Therefore, a contact is formed at the end of the helical antenna b so that the signal is radiated by drawing the rod antenna a out of the plastic structure. In addition, the rod antenna (a) consisting of a plurality of stages can be used to pull in and out from the plastic structure, the helical antenna (b) is configured in the form of wrapping around the rod antenna (a) during the pull-in.

This configuration is less signal sensitivity than the rod antenna (a) and the helical antenna (b) separately configured, but can ensure some portability and aesthetics due to the length compensation.

Meanwhile, in addition to the TDMB communication method, ATSC-MH, which is a standard for supporting mobile broadcasting in ATSC, which is a fixed digital TV standard among broadcasting communication methods, is adopted overseas, and the ATSC-MH is a DTV broadcasting system that provides high quality HD video. Including a channel signal and transmitting to a mobile device and a mobile device, by using the 180MHz band and 500MHz band at the same time, to transmit digital broadcasts or content through any one of the bands or a single broadcast content through the bands It is divided and transmitted.

In addition, among the mobile broadcasting standards adopted in Europe and China, there are multiple bands.

In the case of a receiver to support such multiple bands, the TDMB antenna designed for one band does not receive all the broadcasts transmitted through the ATSC-MH.

Therefore, in order to simultaneously support the multiple bands, a plurality of antennas satisfying the antenna length for each band must be attached to the portable terminal or newly designed as a multi-band reception antenna.

However, when the plurality of antennas are attached to the portable terminal, portability to be considered most of the portable terminal is reduced and it is troublesome to use. In addition, in the case of designing the multi-band reception antenna corresponding to a specific broadcast communication method, there is a problem in that the appearance, antenna characteristics, or antenna length of the antenna have already been specified to be suitable for the specific broadcast communication method. There is also a problem in that the design, production, management, etc. of the multi-broadcast reception antennas that are developed in response to different broadcast communication schemes of the manufacturer also increases.

It is an object of the present invention to provide an antenna capable of satisfying performance requirements for a plurality of bands while minimizing a minimum modification of an antenna previously used for broadcast reception requiring multi-band support.

In addition, an object of the present invention is to provide a new broadcast receiving antenna of the same or similar materials by using a rod antenna structure such as the existing TDMB without significant modification.

In addition, it is an object of the present invention to provide an antenna capable of maintaining minimal deformation, appearance maintenance, and aesthetics in manufacturing a new broadcast receiving antenna using a coupling.

Coupling antenna according to the present invention for achieving the above object is a conductive member surrounding the signal feed unit for supplying a signal, a helical antenna unit connected to the signal feed unit to compensate for the antenna length, the helical antenna unit and the contact A rod antenna unit which is connected via a plurality of stages, a conductor coupling unit arranged to surround the helical antenna unit, and disposed between the conductor coupling unit and the helical antenna unit, the conductor coupling unit and the helical antenna unit And an insulator portion for electrically insulating.

In this case, the antenna length including the helical antenna portion and the rod antenna portion may correspond to the low frequency band of ATSC-MH, which is a DTV broadcasting standard, and the antenna length of the conductor coupling unit is a high frequency of ATSC-MH, which is a DTV broadcasting standard. It may be characterized by corresponding to the band.

Meanwhile, the helical antenna unit and the conductor coupling unit are coupled to each other, and the helical antenna unit, the rod antenna unit, or the conductor coupling unit based on the amount of signal power supplied through the conductive member and the signal feed unit through the coupling. The resonance band may be determined by adjusting at least one of the lengths.

In addition, the conductor coupling part and the insulator part may be configured in the form of a bobbin surrounding the helical antenna part.

In addition, the helical antenna unit and the conductor coupling unit are coupled to each other, and determining the resonance band by adjusting at least one of the number of pitches of the helical included in the helical antenna unit or the bobbin area of the conductor coupling unit. It can be characterized.

In addition, the conductor coupling unit may shield the front surface of the helical antenna unit.

On the other hand, the coupling antenna is characterized in that for receiving one or more of the multi-band broadcast communication schemes including ATSC-MH, DVB-T, DVB-H.

Coupling antenna according to the present invention is to add a separate conductor coupling portion surrounding the helical antenna portion to the appearance consisting of the rod antenna portion and the helical antenna portion previously used, the appearance of a rod antenna that supports the conventional TDMB communication method minimal appearance Modifications provide an antenna capable of supporting multiple bands while maintaining portability and aesthetics.

In addition, the coupling antenna according to the present invention has an effect of expanding the bandwidth of the band where the helical antenna unit and the rod antenna unit resonate due to the coupling effect of the helical antenna unit and the bobbin-shaped conductor coupling unit surrounding the helical antenna unit. There is.

In addition, the coupling antenna according to the present invention is a helical antenna part of the conductor coupling part of the bobbin type without significantly modifying the appearance of the rod antenna used as a conventional TDMB antenna to support the ATSC-MH supporting multiple bands. Since it can be manufactured by inserting around, the manufacturing convenience and aesthetics are not only increased, but the manufacturing cost can be greatly reduced.

The coupling antenna according to the present invention as described above will be described in detail with reference to the drawings.

2 is an exploded view and a plan view of a coupling antenna according to an embodiment of the present invention. First, referring to FIG. 2 (a), the coupling antenna includes a conductive member surrounding a signal feed unit 111 for supplying a signal. 110, a helical antenna unit 120 connected to the signal feed unit 111 to compensate for the resonant length, and a rod antenna unit 150 connected to the helical antenna unit 120 through a contact and configured in multiple stages. ), A conductor coupling unit 140 disposed to surround the helical antenna unit 120, and a conductor coupling unit (120) disposed between the conductor coupling unit 130 and the helical antenna unit 120. 140 may be formed of an insulator portion 130 that electrically insulates the helical antenna unit 120.

The conductor coupling part 140 and the insulator part 130 may be configured in the form of a bobbin having a space therein in the longitudinal direction as shown, and the conductor coupling part 140 is the signal feed part. Coupling with the helical antenna unit 120 that is fed through 111 may change the radiation characteristics of the helical antenna unit. That is, while the signal radiated through the rod antenna unit 150 and the helical antenna unit 120 is partially excited to the conductor coupling unit 140 through a coupling effect, the band characteristics of the entire antenna cover multiple bands. The bandwidth of a particular band can be extended.

On the other hand, the insulator portion 130 is inserted between the helical antenna portion 120 and the conductor coupling portion 140, so as to be spaced apart between the helical antenna portion 120 and the conductor coupling portion 140. It is possible to induce coupling and to prevent excessive coupling.

In addition, such a configuration has an excellent advantage in terms of cost, yield, and ease of manufacture because most of the existing rod antenna parts can be utilized because volume increase or shape deformation is minimized.

Through such a configuration, as shown in FIG. 2 (b), the helical antenna unit 120 supplied through the signal feed unit 111 and the rod antenna unit fed through the contact with the helical antenna unit 120 are provided. 150 may operate as a first antenna corresponding to one band, and the first antenna may operate by satisfying an antenna length required for the 180 MHz band of the ATSC-MH.

In addition, the conductor coupling unit 140 is coupled to the helical antenna unit 120 to change the characteristics of the helical antenna unit 120, the helical antenna unit 120 and the rod antenna unit 150 has changed characteristics ) Operates as a second antenna, and may operate to satisfy the antenna length required for the 500 MHz band of the ATSC-MH through the second antenna.

Coupling antenna including the above configuration is further arranged so that only the conductor coupling unit 140 and the insulator unit 130 surround the helical antenna unit 120 while maintaining the appearance of the rod antenna supporting the existing TDMB It is possible to provide an antenna supporting a plurality of bands at the same time, while providing fabrication convenience. Through this, it is possible to easily cover the multiple bands required for the ATSC-MH. On the other hand, not only ATSC-MH but also DVB-H and DVB-T require antennas requiring multiple broadcast band reception, and thus, the present invention can be applied to such a broadcast communication method.

On the other hand, the coupling antenna according to the present invention and the helical antenna unit 120 through the coupling effect generated in the conductor coupling unit 140 and the helical antenna unit 120 through the insulator unit 130 The band characteristics of the entire antenna including the load antenna unit 150 are configured to operate as two antennas corresponding to multiple bands, and the helical antenna unit 120 and the load antenna unit 150 having changed radiation characteristics. The reception band of the configured second antenna can be extended.

Due to the coupling effect between the conductor coupling part 140 and the helical antenna part 120 as described above, it is not necessary to arrange a separate parasitic antenna, thereby improving portability.

In addition, the pitch of the helical constituting the helical antenna unit 120 and the bobbin outer surface of the conductor coupling unit 140 face each other to exhibit the coupling effect. In consideration of this, the length of the conductor coupling part 140 may be adjusted or the pitch of the helical may be adjusted to resonate in a specific band. In this case, the front surface of the helical antenna unit 120 may be shielded or partially shielded according to the length adjustment of the conductor coupling unit 140.

According to the signal inflow through the coupling between the pitch of the helical included in the helical antenna unit 120 and the bobbin outer surface, a plurality of reception bands such as DVB-H and DVB-T as well as ATSC-MH mentioned above The length of the conductor coupling unit 140 may be adjusted to correspond to the mobile broadcast standard that requires the helical pitch, or the helical pitch number of the helical antenna unit 120 may be appropriately adjusted. In this case, the signal inflow amount may be determined according to the signal power supplied through the signal feed unit 111.

On the other hand, although the rod antenna unit 150 of the coupling antenna is shown to be composed of a rod antenna having a multi-stage and a bobbin for receiving the rod antenna, the bobbin of the rod antenna unit 150 is the conductor coupling unit The rod antenna may be configured to be drawn and drawn directly to the conductor coupling part 140.

3 is an antenna characteristic graph of a coupling antenna according to the present invention. As described above, a first antenna including the helical antenna unit and the load antenna unit among the bands supported by the ATSC-MH may generate resonance in a 500 MHz band. It can be seen that. In addition, it can be seen that the second antenna including the conductor coupling unit generates resonance in a 180 MHz band among the bands supported by the ATSC-MH.

In particular, due to the coupling effect of the second antenna to ensure a wide bandwidth from the 500MHz to 600MHz band and resonant, it can be seen that a stable reception is achieved by ensuring a certain or more gain.

1 is a plan view of a terrestrial DMB antenna composed of a conventional helical and rod antenna;

2 is a block diagram of a coupling antenna according to the present invention;

Figure 3 is a graph showing the band characteristics of the coupling antenna according to the present invention.

*** Description of the symbols for the main parts of the drawings ***

110: conductive member 111: signal feed unit

120: helical antenna portion 130: insulator portion

140: conductor coupling portion 150: rod antenna portion

Claims (8)

A conductive member surrounding a signal feed unit for supplying a signal; A helical antenna unit connected to the signal feed unit to compensate an antenna length; A rod antenna unit connected to the helical antenna unit through a contact and configured in multiple stages; A conductor coupling part arranged to surround the helical antenna part; And An insulator part disposed between the conductor coupling part and the helical antenna part to electrically insulate the conductor coupling part and the helical antenna part; Coupling antenna comprising a. The method according to claim 1, And an antenna length including the helical antenna portion and the rod antenna portion corresponds to a low frequency band of ATSC-MH, which is a DTV broadcasting standard. The method according to claim 1, And the antenna length of the conductor coupling part corresponds to a high frequency band of ATSC-MH, which is a DTV broadcasting standard. The method according to claim 1, The helical antenna unit and the conductor coupling unit are coupled to each other, and at least one of the helical antenna unit, the rod antenna unit, or the conductor coupling unit based on the amount of signal power supplied through the conductive member and the signal feed unit through the coupling. A coupling antenna, characterized in that for determining the resonance band by adjusting one length. The method according to claim 1, And the conductor coupling part and the insulator part have a bobbin shape surrounding the helical antenna part. The method according to claim 5, The helical antenna unit and the conductor coupling unit are coupled to each other, and the resonance band is determined by adjusting at least one of the number of pitches of the helical included in the helical antenna unit or the bobbin area of the conductor coupling unit. Coupling antenna. The method according to claim 1, And the conductor coupling part shields the front surface of the helical antenna part. The method according to claim 1, The coupling antenna is characterized in that for receiving one or more of a multi-band broadcast communication scheme including ATSC-MH, DVB-T, DVB-H.

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