JPH11168418A - Antenna switching matching device - Google Patents
Antenna switching matching deviceInfo
- Publication number
- JPH11168418A JPH11168418A JP9350186A JP35018697A JPH11168418A JP H11168418 A JPH11168418 A JP H11168418A JP 9350186 A JP9350186 A JP 9350186A JP 35018697 A JP35018697 A JP 35018697A JP H11168418 A JPH11168418 A JP H11168418A
- Authority
- JP
- Japan
- Prior art keywords
- reception
- transmission
- antenna
- circuit
- switch
- 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.)
- Pending
Links
Landscapes
- Transceivers (AREA)
- Radio Transmission System (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ＴＤＭＡ−ＦＤＤ
方式でダイバーシチ受信機能を有する無線機における送
受信アンテナの切換整合装置に関するものである。The present invention relates to a TDMA-FDD.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission and reception antenna switching matching device in a wireless device having a diversity receiving function in a system.
【０００２】[0002]
【従来の技術】ＴＤＭＡ−ＦＤＤ方式は、時分割多元接
続（Time Division Multiple Access）方式で、さら
に、送信と受信を周波数の異なる２波を用いて行う周波
数分割双方向通信（Frequemcy Division Duplex ）方式
である。2. Description of the Related Art The TDMA-FDD system is a time division multiple access system, and furthermore, a frequency division bidirectional communication system in which transmission and reception are performed using two waves having different frequencies. It is.
【０００３】図３は従来のＴＤＭＡ−ＦＤＤ方式の無線
機のブロック図であり、アンテナ切換整合装置の部分を
詳細に示したブロック図である。この構成は、２本のア
ンテナを有し、１本のアンテナを送受兼用とし、他の１
本は受信専用としたダイバーシチ受信の例である。FIG. 3 is a block diagram of a conventional radio device of the TDMA-FDD system, and is a block diagram showing a part of an antenna switching matching device in detail. This configuration has two antennas, one antenna is used for both transmission and reception, and the other antenna is used.
The book is an example of diversity reception dedicated to reception.
【０００４】図において、１は受信専用アンテナ、２は
受信アンテナ切換器、３は受信帯域整合回路、４は受信
信号を選択増幅，検波する受信回路（Ｒｘ）である。In FIG. 1, reference numeral 1 denotes a reception antenna, 2 denotes a reception antenna switch, 3 denotes a reception band matching circuit, and 4 denotes a reception circuit (Rx) for selectively amplifying and detecting a reception signal.
【０００５】５は送信帯域フィルタを有する送信回路
（Ｔｘ）、７は送受信切換器、８は送受共用アンテナ、
９は制御部であり、送信，受信回路を制御すると共に、
ダイバーシチ受信のためのアンテナ切換器２の切換制御
と送受信切換器７の切換制御を行う。１０は送信帯域整
合回路である。[0005] 5 is a transmission circuit (Tx) having a transmission band filter, 7 is a transmission / reception switch, 8 is a transmission / reception shared antenna,
Reference numeral 9 denotes a control unit which controls the transmission and reception circuits,
The switching control of the antenna switching unit 2 and the switching control of the transmission / reception switching unit 7 for diversity reception are performed. Reference numeral 10 denotes a transmission band matching circuit.
【０００６】この例の無線機は、送信時には、送受信切
換器７を送信回路５側に接続し、送信帯域整合回路１０
を介して送受共用アンテナ８から送信する。受信時は、
送受信切換器７を切換器２側に接続した状態で受信アン
テナ切換器２を、アンテナ１側とアンテナ８側のいずれ
か受信レベルの大きい方に接続して受信する。In the wireless device of this example, during transmission, the transmission / reception switch 7 is connected to the transmission circuit 5 and the transmission band matching circuit 10
Is transmitted from the transmission / reception shared antenna 8 via the. When receiving,
With the transmission / reception switch 7 connected to the switch 2, the reception antenna switch 2 is connected to the antenna 1 or the antenna 8, whichever has the higher reception level, to receive.
【０００７】以上の動作から、受信帯域整合回路３は受
信周波数帯域で整合がとれるように構成され、送信帯域
整合回路１０は、アンテナ８を送受共用しているので送
信周波数帯域と受信周波数帯域の両方で整合がとれるよ
うに構成されている。[0007] From the above operation, the reception band matching circuit 3 is configured so as to achieve matching in the reception frequency band, and the transmission band matching circuit 10 shares the transmission and reception of the antenna 8, so that the transmission frequency band and the reception frequency band can be matched. It is configured so that both can be matched.
【０００８】図４は従来の整合回路の周波数特性例図で
あり、図３の受信帯域整合回路３の周波数特性ａ（太実
線）と送信帯域整合回路１０の周波数特性ｂ（太破線）
である。例えば、日本のＰＤＣ（パーソナル・ディジタ
ル・セルラ）といわれる携帯電話システムの周波数帯域
は、端末装置の送信周波数帯域が９４０〜９５６ＭＨ
ｚ、受信周波数帯域が８１０〜８２６ＭＨｚであり、送
信，受信を合わせた周波数帯域は１４６ＭＨｚである。
従って、受信帯域整合回路３は、コイル１個，コンデン
サ１個からなる低域ろ波特性ａを有し、送信帯域整合回
路１０は、コイル２個，コンデンサ２個からなり、送信
帯域と受信帯域の両方を通過整合させる広帯域の帯域ろ
波特性ｃを有している。FIG. 4 is a diagram showing an example of the frequency characteristic of the conventional matching circuit. The frequency characteristic a (thick solid line) of the reception band matching circuit 3 and the frequency characteristic b (thick broken line) of the transmission band matching circuit 10 shown in FIG.
It is. For example, the frequency band of a mobile phone system called PDC (Personal Digital Cellular) in Japan is such that the transmission frequency band of a terminal device is 940 to 956 MHz.
z, the reception frequency band is 810-826 MHz, and the frequency band for transmission and reception is 146 MHz.
Therefore, the reception band matching circuit 3 has a low-pass filtering characteristic a including one coil and one capacitor, and the transmission band matching circuit 10 includes two coils and two capacitors. It has a broadband bandpass characteristic c for pass-matching both bands.
【０００９】[0009]
【発明が解決しようとする課題】しかし、この１４６Ｍ
Ｈｚの広帯域で整合をとる送信帯域整合回路１０は、回
路規模が大きく、部品点数が多く、コストが高いという
問題点があった。However, this 146M
The transmission band matching circuit 10 for matching in a wide band of Hz has a problem that the circuit scale is large, the number of components is large, and the cost is high.
【００１０】本発明の目的は、上記従来の広い帯域にわ
たって整合をとっている送信帯域整合回路の回路規模が
大きく、部品点数が多く、コストが高いという問題点を
解決し、回路規模が小さく、部品点数が少なく、コスト
の安い送信帯域整合回路を備えたアンテナ切換整合装置
を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to solve the problem of the conventional transmission band matching circuit that matches over a wide band, that the circuit scale is large, the number of parts is large, and the cost is high. An object of the present invention is to provide an antenna switching matching device including a transmission band matching circuit having a small number of components and a low cost.
【００１１】[0011]
【課題を解決するための手段】本発明のアンテナ切換整
合装置は、時分割多元接続／周波数分割双方向通信方式
でダイバーシチ受信機能を有する無線機のアンテナ切換
整合装置であって、受信専用アンテナと、送受共用アン
テナと、該送受共用アンテナを受信側端子と送信側端子
とに切り換え接続する送受信切換器と、該送受信切換器
の受信側端子からの入力と前記受信専用アンテナからの
入力とを切り換え出力するアンテナ切換器と、該アンテ
ナ切換器に接続され受信周波数帯域における前記アンテ
ナと受信回路との整合をとる受信帯域整合回路と、前記
送受信切換器の送信側端子と送信回路との間に接続され
送信周波数帯域における該送信回路と前記送受共用アン
テナとの整合をとる送信帯域整合回路と、送信時には、
前記送受信切換器を前記送信側端子に切り換え接続して
送信回路の出力を前記送信帯域整合回路を介して前記送
受信共用アンテナから送出するように制御し、受信時に
は、前記送受信切換器を前記受信側端子に切り換え接続
するとともに、前記アンテナ切換器を前記受信専用アン
テナと該送受信切換器を介した前記送受信共用アンテナ
のいずれか受信レベルの大きい方に切り換え接続するよ
うに制御する制御部とが備えられたことを特徴とするも
のである。SUMMARY OF THE INVENTION An antenna switching matching device of the present invention is an antenna switching matching device for a radio having a diversity receiving function in a time division multiple access / frequency division two-way communication system. A transmission / reception shared antenna, a transmission / reception switch for switching and connecting the transmission / reception antenna between a reception terminal and a transmission terminal, and switching between an input from the reception terminal of the transmission / reception switch and an input from the reception only antenna. An antenna switch for outputting, a reception band matching circuit connected to the antenna switch for matching the antenna and a reception circuit in a reception frequency band, and a connection between a transmission side terminal of the transmission / reception switch and a transmission circuit. And a transmission band matching circuit that matches the transmission circuit and the transmission / reception shared antenna in a transmission frequency band, and at the time of transmission,
The transmission / reception switch is switched to the transmission terminal to control the output of the transmission circuit to be transmitted from the transmission / reception shared antenna via the transmission band matching circuit. At the time of reception, the transmission / reception switch is connected to the reception side. A control unit that switches and connects the terminal to the terminal and controls the antenna switch to be switched to the higher reception level of the reception-only antenna or the transmission / reception shared antenna via the transmission / reception switch. It is characterized by having.
【００１２】[0012]
【発明の実施の形態】ＰＤＣの通信方式はＴＤＭＡ−Ｆ
ＤＤ方式であるから、無線端末機が送信している時間と
受信している時間とは分割されており、かつ、送信周波
数帯域と受信周波数帯域が同一でない。即ち、アンテナ
の特性としては、送信している時間は送信周波数帯域に
所要の特性が得られ、受信している時間は受信周波数帯
域に所要の特性が得られれば装置として正常に動作す
る。この事を基本に装置を構成する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The PDC communication system is TDMA-F
Because of the DD system, the time during which the wireless terminal is transmitting and the time during which it is receiving are divided, and the transmission frequency band and the reception frequency band are not the same. That is, as the characteristics of the antenna, if the required characteristics are obtained in the transmission frequency band during the transmitting time and the required characteristics are obtained in the receiving frequency band during the receiving time, the device operates normally. The device is configured based on this.
【００１３】図１は本発明の実施例を示すブロック図で
ある。図において、符号１〜５及び７〜９は図３の従来
例と同じである。６は送信帯域整合回路であり、従来例
の送信帯域整合回路１０と異なり、コイル１個とコンデ
ンサ１個の高域通過形整合回路である。FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, reference numerals 1 to 5 and 7 to 9 are the same as in the conventional example of FIG. Reference numeral 6 denotes a transmission band matching circuit, which is different from the conventional transmission band matching circuit 10 and is a high-pass matching circuit having one coil and one capacitor.
【００１４】回路構成上の大きな違いは、受信側の受信
アンテナ切換器２を受信専用アンテナ１に直接接続し、
受信帯域整合回路３をそのあとに接続したことと、送受
信切換器７を送受共用アンテナ８に直結とし送信帯域整
合回路６を送信回路５との間に接続したことである。す
なわち、２つの切換器２，７と整合回路の接続順序を逆
にすることにより、送信帯域整合回路には送信周波数帯
域信号しか通らないようにした。The major difference in the circuit configuration is that the receiving antenna switch 2 on the receiving side is directly connected to the receiving antenna 1,
That is, the reception band matching circuit 3 is connected after that, and the transmission / reception switch 7 is directly connected to the transmission / reception shared antenna 8 and the transmission band matching circuit 6 is connected to the transmission circuit 5. That is, the connection order of the two switches 2 and 7 and the matching circuit is reversed so that only the transmission frequency band signal passes through the transmission band matching circuit.
【００１５】図２は本発明の実施例における整合回路の
周波数特性例図である。図１の受信帯域整合回路３は従
来と同じで、その周波数特性ａも従来と同じである。送
信帯域整合回路６の周波数特性ｂは１６ＭＨｚの送信周
波数帯域で整合がとれるように構成されている。FIG. 2 is a diagram showing an example of frequency characteristics of the matching circuit according to the embodiment of the present invention. The reception band matching circuit 3 of FIG. 1 is the same as the conventional one, and its frequency characteristic a is the same as the conventional one. The frequency characteristic b of the transmission band matching circuit 6 is configured so that matching can be achieved in a transmission frequency band of 16 MHz.
【００１６】これは、送受信切換器７をアンテナ８側に
接続したため、ダイバーシチ受信でアンテナ８で受信し
ても、受信信号はアンテナ切換器２を介して受信帯域整
合回路３に入力されるように構成したからである。This is because the transmission / reception switch 7 is connected to the antenna 8 so that the received signal is input to the reception band matching circuit 3 via the antenna switch 2 even if the signal is received by the antenna 8 in the diversity reception. It is because it constituted.
【００１７】以上のように、ＴＤＭＡ−ＦＤＤ方式の無
線機としての制御部９の動作は、送信時は、切換器７を
制御してアンテナ８を送信帯域整合回路６に接続し、受
信時は、切換器７を制御してアンテナ８を切換器２に接
続するとともに、切換器２を制御してアンテナ１とアン
テナ８のいずれか受信レベルの大きい方に切換接続す
る。As described above, the operation of the control unit 9 as a radio device of the TDMA-FDD system is as follows. At the time of transmission, the control unit 7 is controlled to connect the antenna 8 to the transmission band matching circuit 6, and at the time of reception, , And controls the switching unit 7 to connect the antenna 8 to the switching unit 2 and controls the switching unit 2 to switch and connect the antenna 1 or the antenna 8 to the higher receiving level.
【００１８】上記実施例における切換器はピンダイオー
ドまたはＦＥＴを用いた電子スイッチによって実現され
る。The switching device in the above embodiment is realized by an electronic switch using a pin diode or an FET.
【００１９】[0019]
【発明の効果】以上説明したように、本発明を実施する
ことにより、送信帯域整合回路の整合帯域幅を狭くでき
るので素子数が半減し、小形化，コストダウンが実現さ
れ、実用上の効果が大きい。As described above, by practicing the present invention, the matching bandwidth of the transmission band matching circuit can be narrowed, so that the number of elements is reduced by half, downsizing and cost reduction are realized, and practical effects are obtained. Is big.
【図１】本発明の実施例を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】本発明の実施例における整合回路の周波数特性
例図である。FIG. 2 is a diagram illustrating an example of frequency characteristics of a matching circuit according to the embodiment of the present invention.
【図３】従来の回路構成例図である。FIG. 3 is a diagram illustrating an example of a conventional circuit configuration.
【図４】従来の回路における整合回路の周波数特性例図
である。FIG. 4 is a diagram illustrating an example of frequency characteristics of a matching circuit in a conventional circuit.
１ 受信専用アンテナ ２ 受信アンテナ切換器 ３ 受信帯域整合回路 ４ 受信回路 ５ 送信回路 ６，１０ 送信帯域整合回路 ７ 送受信切換器 ８ 送受共用アンテナ ９ 制御部 REFERENCE SIGNS LIST 1 reception-only antenna 2 reception antenna switch 3 reception band matching circuit 4 reception circuit 5 transmission circuit 6, 10 transmission band matching circuit 7 transmission / reception switch 8 transmission / reception shared antenna 9 control unit
Claims (1)
方式でダイバーシチ受信機能を有する無線機のアンテナ
切換整合装置であって、 受信専用アンテナと、送受共用アンテナと、該送受共用
アンテナを受信側端子と送信側端子とに切り換え接続す
る送受信切換器と、該送受信切換器の受信側端子からの
入力と前記受信専用アンテナからの入力とを切り換え出
力するアンテナ切換器と、該アンテナ切換器に接続され
受信周波数帯域における前記アンテナと受信回路との整
合をとる受信帯域整合回路と、前記送受信切換器の送信
側端子と送信回路との間に接続され送信周波数帯域にお
ける該送信回路と前記送受共用アンテナとの整合をとる
送信帯域整合回路と、 送信時には、前記送受信切換器を前記送信側端子に切り
換え接続して送信回路の出力を前記送信帯域整合回路を
介して前記送受信共用アンテナから送出するように制御
し、受信時には、前記送受信切換器を前記受信側端子に
切り換え接続するとともに、前記アンテナ切換器を前記
受信専用アンテナと該送受信切換器を介した前記送受信
共用アンテナのいずれか受信レベルの大きい方に切り換
え接続するように制御する制御部とが備えられたアンテ
ナ切換整合装置。An antenna switching matching device for a radio having a diversity reception function in a time division multiple access / frequency division two-way communication system, comprising: a reception-only antenna, a transmission / reception shared antenna, and a transmission / reception shared antenna. A transmission / reception switch for switching between a terminal and a transmission side terminal, an antenna switching unit for switching and outputting between an input from a reception side terminal of the transmission / reception switch and an input from the reception only antenna, and a connection to the antenna switching unit A reception band matching circuit for matching the antenna and a reception circuit in a reception frequency band, and the transmission circuit and the transmission / reception antenna in a transmission frequency band connected between a transmission side terminal of the transmission / reception switch and a transmission circuit. A transmission band matching circuit for matching with the transmission circuit, and at the time of transmission, the transmission / reception switching device is switched to the transmission side terminal and connected to the output terminal of the transmission circuit. Is controlled so as to be transmitted from the transmission / reception shared antenna via the transmission band matching circuit, and at the time of reception, the transmission / reception switch is switched to the reception side terminal, and the antenna switch is connected to the reception only antenna. An antenna switching matching device comprising: a control unit configured to perform control so as to switch and connect to one of the transmission / reception shared antennas via a transmission / reception switcher, whichever has a higher reception level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9350186A JPH11168418A (en) | 1997-12-05 | 1997-12-05 | Antenna switching matching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9350186A JPH11168418A (en) | 1997-12-05 | 1997-12-05 | Antenna switching matching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11168418A true JPH11168418A (en) | 1999-06-22 |
Family
ID=18408808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9350186A Pending JPH11168418A (en) | 1997-12-05 | 1997-12-05 | Antenna switching matching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11168418A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013533681A (en) * | 2010-06-07 | 2013-08-22 | エントロピック・コミュニケーションズ・インコーポレイテッド | Method and apparatus for real-time multiplexing at receiver and antenna array components |
| KR20150094058A (en) * | 2014-02-10 | 2015-08-19 | 삼성전자주식회사 | Frequency division duplex wireless receiver and method |
-
1997
- 1997-12-05 JP JP9350186A patent/JPH11168418A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013533681A (en) * | 2010-06-07 | 2013-08-22 | エントロピック・コミュニケーションズ・インコーポレイテッド | Method and apparatus for real-time multiplexing at receiver and antenna array components |
| KR20150094058A (en) * | 2014-02-10 | 2015-08-19 | 삼성전자주식회사 | Frequency division duplex wireless receiver and method |
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