JPH0685505A - Antenna branching filter - Google Patents
Antenna branching filterInfo
- Publication number
- JPH0685505A JPH0685505A JP23444492A JP23444492A JPH0685505A JP H0685505 A JPH0685505 A JP H0685505A JP 23444492 A JP23444492 A JP 23444492A JP 23444492 A JP23444492 A JP 23444492A JP H0685505 A JPH0685505 A JP H0685505A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- antenna terminal
- terminal
- branching filter
- duplexer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Waveguide Connection Structure (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はアンテナ分波器に関し、
特に移動体通信等に使用される回転アンテナ用の分波器
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna demultiplexer,
Particularly, the present invention relates to a duplexer for a rotating antenna used for mobile communication and the like.
【０００２】[0002]
【従来の技術】従来、この種の回転アンテナと分波器は
図５に示すように、受信器１４，送信機１５の送受信信
号を分波する分波器１８とアンテナ１２との接続には、
ロータリージョイント１７を仲介させ、それぞれをフィ
ーダで接続してアンテナを回転させていた。2. Description of the Related Art Conventionally, as shown in FIG. 5, a rotary antenna and a demultiplexer of this type are connected to a demultiplexer 18 for demultiplexing a transmission / reception signal of a receiver 14 and a transmitter 15 and an antenna 12. ,
The rotary joint 17 is used as an intermediary, and each is connected by a feeder to rotate the antenna.
【０００３】[0003]
【発明が解決しようとする課題】この従来のアンテナ分
波器では、アンテナとロータリージョイント、送受分波
器はそれぞれ別個に形成されているので、これら部品間
の接続長が長くなることによる電気損失の発生や、装置
の大型化、コストアップなどの欠点があった。In this conventional antenna demultiplexer, the antenna, the rotary joint, and the transmission / reception demultiplexer are formed separately, so that the electrical loss due to the long connection length between these parts is increased. However, there are drawbacks such as the occurrence of noise, the size of the device, and the cost.
【０００４】本発明の目的は、ロータリージョイント機
能を使用することなく、かつ、低損失で小型化かつ機械
的摩擦の無いアンテナ分波器を提供することにある。An object of the present invention is to provide an antenna duplexer that does not use a rotary joint function, is low in loss, is small in size, and has no mechanical friction.
【０００５】[0005]
【課題を解決するための手段】本発明のアンテナ分波器
は送信用および受信用分波器を共振棒を並べて結合させ
た分波器のアンテナ端子用共振棒の先端部と、この先端
部と容量結合したアンテナ端子とを有し、前記アンテナ
端子を電気容量一定の状態を保持しながら回転可能な構
造としたことを特徴とする。SUMMARY OF THE INVENTION An antenna duplexer of the present invention has a tip portion of a resonance rod for an antenna terminal of a duplexer in which a transmission rod and a reception duplexer are coupled by arranging resonance rods side by side, and this tip portion. And an antenna terminal capacitively coupled to the antenna terminal, and the antenna terminal is rotatable while maintaining a constant electric capacity.
【０００６】[0006]
【実施例】次に本発明について図面を参照して説明す
る。図１は本発明の一実施例の構成図である。図１にお
いて、９はアンテナ端子、１０は受信端子、１１は送信
端子、４〜８は共振棒、１，２，３はそれぞれアンテナ
端子９、受信端子１０、送信端子１１との結合容量であ
る。ここで結合容量１は後述する容量変化無しに、回転
出来る構造となっている。共振棒４〜８は、送信及び受
信周波数に対する分波フィルタを形成している。送信周
波数において共振する共振棒７，８と受信周波数におい
て共振する共振棒４，５とは、共振棒６で合成される。
アンテナ端子９とアンテナとの結合は容量結合となって
いて、共振棒６とアンテナ端子９は機械的接触なしに、
電気的に結合されている。図２，図３はアンテナ端子９
と結合容量１との結合状態を示している。図２は平行円
盤１Ａ，１Ｂのコンデンサとし、円盤１Ａの中心にアン
テナ端子９の導体を接続し、この導体を軸として回転さ
せる。図３は筒状の外導体１Ｃに円柱状の内導体１Ｄを
挿入して容量を形成している。内外導体を同軸上に配置
し、アンテナ端子９に接続された内導体１Ｄを回転させ
る。いずれの構成によってもアンテナ端子９の回転に対
して、結合容量は一定に保たれるので、アンテナ端の回
転により結合容量１の電気特性の変化は起こらない。ま
たこの結合容量は、１ＧＨｚで１ｐＦ程度の微少容量で
あるために、通常の５０オーム程度の伝送線路で容量結
合を実現する場合に比べて、容量値を１／１００程度に
低減できる。したがって、小型化がはかれるという利点
を有する。また図３の実施例では、例えばフィルタとし
て誘電体同軸形式のものを用いれば極めて小型のアンテ
ナ分波器が実現できる。The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention. In FIG. 1, 9 is an antenna terminal, 10 is a receiving terminal, 11 is a transmitting terminal, 4 to 8 are resonant rods, and 1, 2 and 3 are coupling capacities with the antenna terminal 9, receiving terminal 10 and transmitting terminal 11, respectively. . Here, the coupling capacitor 1 has a structure that can rotate without a capacitance change described later. The resonance rods 4 to 8 form a demultiplexing filter for transmitting and receiving frequencies. The resonance rods 7 and 8 that resonate at the transmission frequency and the resonance rods 4 and 5 that resonate at the reception frequency are combined by the resonance rod 6.
The coupling between the antenna terminal 9 and the antenna is capacitive coupling, and the resonance rod 6 and the antenna terminal 9 do not make mechanical contact,
It is electrically coupled. 2 and 3 show the antenna terminal 9
And the coupling capacity 1 is shown. In FIG. 2, capacitors of parallel disks 1A and 1B are used, the conductor of the antenna terminal 9 is connected to the center of the disk 1A, and the conductor is rotated about the axis. In FIG. 3, a cylindrical inner conductor 1D is inserted into a cylindrical outer conductor 1C to form a capacitor. The inner and outer conductors are arranged coaxially, and the inner conductor 1D connected to the antenna terminal 9 is rotated. With either configuration, the coupling capacitance is kept constant with respect to the rotation of the antenna terminal 9, so that the rotation of the antenna end does not change the electrical characteristics of the coupling capacitance 1. Further, since this coupling capacitance is a minute capacitance of about 1 pF at 1 GHz, the capacitance value can be reduced to about 1/100 as compared with the case where the capacitance coupling is realized by a normal transmission line of about 50 ohms. Therefore, there is an advantage that the size can be reduced. In the embodiment of FIG. 3, an extremely small antenna duplexer can be realized by using a dielectric coaxial type filter as the filter.
【０００７】図４は本発明を利用したアンテナ分波器を
含む装置の構成例で、アンテナ１６、分波器１３、受信
器１４、送信器１５と、前述したアンテナ端子９、結合
容量１からなる。この構成で明かなように、アンテナ１
６と分波器１３とが回転する結合容量１を介して一体構
造が可能になる。FIG. 4 shows an example of the configuration of an apparatus including an antenna demultiplexer according to the present invention, which includes an antenna 16, a demultiplexer 13, a receiver 14, a transmitter 15, the antenna terminal 9 and the coupling capacitance 1 described above. Become. As you can see from this configuration, antenna 1
An integral structure becomes possible through the coupling capacitor 1 in which 6 and the demultiplexer 13 rotate.
【０００８】[0008]
【発明の効果】上述したように本発明は、従来例のよう
なアンテナと分波器との間のロータリージョイントが不
要となり、アンテナと分波器が一体で形成されるので、
低損失で小型となり、さらに低コストかつ電気特性の安
定したアンテナ分波器が得られる。特に自動車等に搭載
する小型化を要求される移動体衛星通信のアンテナシス
テムに使用して極めて有効である。As described above, the present invention eliminates the need for a rotary joint between the antenna and the duplexer as in the conventional example, and the antenna and the duplexer are integrally formed.
It is possible to obtain an antenna duplexer that is low in loss and small in size, and that is low in cost and has stable electric characteristics. In particular, it is extremely effective when used in an antenna system for mobile satellite communication which is required to be miniaturized to be mounted on an automobile or the like.
【図１】本発明の一実施例の構成図である。FIG. 1 is a configuration diagram of an embodiment of the present invention.
【図２】本実施例の要部の結合容量を示す斜視図であ
る。FIG. 2 is a perspective view showing a coupling capacitance of a main part of this embodiment.
【図３】本実施例の要部の結合容量を示す斜視図であ
る。FIG. 3 is a perspective view showing a coupling capacitance of a main part of this embodiment.
【図４】本実施例を適用した無線装置の構成図である。FIG. 4 is a configuration diagram of a wireless device to which this embodiment is applied.
【図５】従来例の構成図である。FIG. 5 is a configuration diagram of a conventional example.
１〜３ 結合容量 ４〜８ 共振棒 ９ アンテナ端子 １０ 受信機端子 １１ 送信機端子 １２ アンテナ １３ 分波器 １４ 受信器 １５ 送信器 1 to 3 Coupling capacity 4 to 8 Resonator rod 9 Antenna terminal 10 Receiver terminal 11 Transmitter terminal 12 Antenna 13 Demultiplexer 14 Receiver 15 Transmitter
Claims (3)
べて結合させた分波器のアンテナ端子用共振棒の先端部
と、この先端部と容量結合したアンテナ端子とを有し、
前記アンテナ端子を電気容量一定の状態を保持しながら
回転可能な構造としたことを特徴とするアンテナ分波
器。1. A front end portion of a resonance rod for an antenna terminal of a duplexer in which a resonance rod is arranged and coupled with a transmission and reception duplexer, and an antenna terminal capacitively coupled to the front end portion is provided.
An antenna duplexer having a structure in which the antenna terminal is rotatable while maintaining a constant electric capacity.
円盤を形成し、この対向する並行円盤との間で所定の容
量を保持することを特徴とする請求項１記載のアンテナ
分波器。2. The antenna duplexer according to claim 1, wherein the tip end portion and the antenna terminal form a parallel disk, and a predetermined capacity is held between the parallel disks facing each other.
れぞれ同軸の内導体と外導体とを形成し、所定の容量を
保持することを特徴とする請求項１記載のアンテナ分波
器。3. The antenna duplexer according to claim 1, wherein the tip portion and the antenna terminal respectively form an inner conductor and an outer conductor which are coaxial with each other and hold a predetermined capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23444492A JP2760230B2 (en) | 1992-09-02 | 1992-09-02 | Antenna duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23444492A JP2760230B2 (en) | 1992-09-02 | 1992-09-02 | Antenna duplexer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0685505A true JPH0685505A (en) | 1994-03-25 |
| JP2760230B2 JP2760230B2 (en) | 1998-05-28 |
Family
ID=16971110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23444492A Expired - Lifetime JP2760230B2 (en) | 1992-09-02 | 1992-09-02 | Antenna duplexer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2760230B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002045202A1 (en) * | 2000-11-29 | 2002-06-06 | Mitsubishi Denki Kabushiki Kaisha | Noncontact rotary joint |
-
1992
- 1992-09-02 JP JP23444492A patent/JP2760230B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002045202A1 (en) * | 2000-11-29 | 2002-06-06 | Mitsubishi Denki Kabushiki Kaisha | Noncontact rotary joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2760230B2 (en) | 1998-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980217 |