JPS59232A - Common use device of antenna - Google Patents

Common use device of antenna

Info

Publication number
JPS59232A
JPS59232A JP57109324A JP10932482A JPS59232A JP S59232 A JPS59232 A JP S59232A JP 57109324 A JP57109324 A JP 57109324A JP 10932482 A JP10932482 A JP 10932482A JP S59232 A JPS59232 A JP S59232A
Authority
JP
Japan
Prior art keywords
signal
equalizer
filter
transmitting
output
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
Application number
JP57109324A
Other languages
Japanese (ja)
Inventor
Yoshimi Kenjo
見上　喜美
Kaoru Kudo
薫 工藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP57109324A priority Critical patent/JPS59232A/en
Publication of JPS59232A publication Critical patent/JPS59232A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Details Of Aerials (AREA)
  • Transceivers (AREA)

Abstract

PURPOSE:To suppress a component of a transmitting signal mixed in a receiving signal in the step of synthesis, and to bring transmitting and receiving frequency close to each other, by adjusting by an equalizer one of amplitude or phase of a branch signal branching from a transmitting signal, and synthesizing an output of its equalizer and a receiving signal. CONSTITUTION:A transmitting signal from a transmitter 5 is applied to an antenna 7 by a circulator 3 through a transmitting filter 9 of a common use device 15 of antenna. Also, a receiving signal from the antenna 7 is applied to the circulator 3, and its output is supplied to a receiving filter 10. By this transmitting filter 9, a part of the transmitting signal is branched, and a branched signal 21 is applied to an equalizer 12. This equalizer 12 is constituted of an amplitude adjusting device 13 and a phase adjusting device 14, the adjusting quantity of this equalizer 12 is set in advance by transmitting frequency information 22 from the transmitter 5, the amplitude of the signal 21 is made equal to output amplitude of the filter 10, and the phase is made opposite to output phase of the filter 10. Subsequently, an output of the filter 10 and an output of the equalizer 12 are synthesized by a synthesizer 11, and the residual transmitting signal component is eliminated.

Description

【発明の詳細な説明】 本発明は送信空中線及び受信空中線として１台の空中線
の共用を可能にする空中線共用器に関する。従来この種
の空中線共用器は第１図に示すように送信フィルタ１１
受信フイルタ２１サーキエレーター３及びノツチフィル
タ４によって構成されていた。送信機５から受信機６へ
の漏洩を小さくするためフィルタ１及び２には極めて高
い選択性が必要であり、しかもこれらフィルタ１及び２
には小形、軽量化が求められるから、送信周波数と受信
周波数とは充分に離隔する必要があった。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an antenna duplexer that makes it possible to share one antenna as a transmitting antenna and a receiving antenna. Conventionally, this type of antenna duplexer has a transmission filter 11 as shown in FIG.
It was composed of a receiving filter 21, a circulator 3, and a notch filter 4. In order to reduce leakage from the transmitter 5 to the receiver 6, filters 1 and 2 must have extremely high selectivity;
Since the device is required to be small and lightweight, the transmitting frequency and receiving frequency must be sufficiently separated.

本発明の目的は、送信周波数と受信周波数の離隔が小さ
くて足シ、またはフィルタ特性の緩和を可能にすること
によって小形、軽量化し九空中線共用器の提供にある。SUMMARY OF THE INVENTION An object of the present invention is to provide a nine-antenna duplexer that is smaller and lighter in weight by reducing the distance between the transmitting frequency and the receiving frequency, thereby making it possible to relax filter characteristics.

本発明の構成は、送信機からの送信信号を空中線に導き
この空中線に受けた受信信号を受信機に導く空中線共用
器において、前記送信信号を分岐して得た分岐信号の振
幅または位相のうちの少なくとも一方を調整する等化器
と、この等化器出力と前記受信信号とを合成する回路と
を備え、前記受信信号に混入している前記送信信号の成
分が前記合成の過程で抑圧されるように前記調整がなさ
れることを特徴とする特 次に図面を参照して本発明の詳細な説明する。The configuration of the present invention is such that in an antenna duplexer that transmits a transmitted signal from a transmitter to an antenna and guides a received signal received by the antenna to a receiver, the amplitude or phase of the branched signal obtained by branching the transmitted signal is an equalizer that adjusts at least one of the above, and a circuit that combines the output of the equalizer with the received signal, wherein components of the transmitted signal mixed in the received signal are suppressed during the combining process. The present invention will be described in detail with reference to the drawings, which is characterized in that the adjustment is made so as to make the adjustment as described above.

第２図は本発明の一実施例を用いた無線通信機の系統図
である。送信機５からの送信信号は送信フィルタ９を通
りサーキユレータ−３によって空中線７に接続される。FIG. 2 is a system diagram of a wireless communication device using an embodiment of the present invention. A transmission signal from the transmitter 5 passes through a transmission filter 9 and is connected to the antenna 7 by a circulator 3.

一方受信信号はサーキーレーター３によって受信フィル
タ１０に接続され、受信信号が選択されて合成器１１に
加えられる。サーキュＶ−ター３および受信フィルター
１０によって受信系統に混入する送信信号電力は微小と
なるが、各々の有限なる特性のため送信信号成分を零と
することはできず、受信フィルタ１ｏの出方には送信信
号が残存する。送信フィルタ９で送信信号の一部を分岐
し、この分岐信号２１ｆ：等化器１２に加える。等化器
１２は振幅調整器１３と位相調整器１４とカ―らなり、
分岐信号２１の振幅を受信フィルタ１０出力の振幅と等
しく、分岐信号２１の位相を受信フィルタ１０出力の位
相と逆相となるようにそれぞれ調整する。この調整量は
、送信機５から送られる送信周波数情報２２に志して予
め、定めた値に設定される。合成器１１は、受信フィル
タ１０の出力と等化器１２の出方とを合成し、受信フィ
ルタ１０出力に残存していた送信信号成分を除去し、受
信信号を出力する。第２図の実施例においては、設定送
信周波数に応じてあらかじめ定められた値に等化器１２
は設定される場合を示しているが、受信機に漏洩送信信
号の検出あるいは漏洩送信信号の影響の有無を検知でき
る機能を有しておればこの検知に応じて等化器１２全自
動的に制御することも可能である。上述のところから明
らかなように、本発明によれば、受１信号に混入した送
信信号成分を効果的に抑圧できるから、送信信号と受信
信号との離隔周波数幅を小さくすることができ、またフ
ィルタに求める選択性を低くしてフィルタを小形、軽量
化した空中線共用器を得ることができる。On the other hand, the received signal is connected to a reception filter 10 by a circulator 3, and the received signal is selected and added to a synthesizer 11. The transmission signal power mixed into the reception system by the circulator 3 and the reception filter 10 becomes minute, but due to the finite characteristics of each, the transmission signal component cannot be reduced to zero, and the output of the reception filter 1o The transmitted signal remains. A part of the transmission signal is branched by the transmission filter 9, and this branched signal 21f is added to the equalizer 12. The equalizer 12 consists of an amplitude adjuster 13 and a phase adjuster 14,
The amplitude of the branched signal 21 is adjusted to be equal to the amplitude of the output of the receiving filter 10, and the phase of the branched signal 21 is adjusted to be opposite to the phase of the output of the receiving filter 10. This adjustment amount is set to a predetermined value based on the transmission frequency information 22 sent from the transmitter 5. The combiner 11 combines the output of the reception filter 10 and the output of the equalizer 12, removes the transmission signal component remaining in the output of the reception filter 10, and outputs a reception signal. In the embodiment of FIG. 2, the equalizer 12
shows the case where the settings are made, but if the receiver has a function that can detect leakage transmission signals or detect the presence or absence of the influence of leakage transmission signals, the equalizer 12 will automatically adjust the settings in response to this detection. It is also possible to control. As is clear from the above, according to the present invention, it is possible to effectively suppress the transmission signal component mixed into the reception 1 signal, so the separation frequency width between the transmission signal and the reception signal can be reduced. It is possible to obtain an antenna duplexer with a smaller and lighter filter by reducing the selectivity required of the filter.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の空中線共用器を備える無線通信機の系統
図、第２図は本発明の一実施例を備える無線通信機の系
統図である。FIG. 1 is a system diagram of a wireless communication device equipped with a conventional antenna duplexer, and FIG. 2 is a system diagram of a wireless communication device equipped with an embodiment of the present invention.

Claims (1)

【特許請求の範囲】[Claims] 送信機からの送信信号を空中線に導きこの空中線に受け
た受信信号を受信機に導く空中線共用器において、前記
送信信号を分岐して得た分岐信号の振幅または位相のう
ちの少なくとも一方を調整する等化器と、この等化器出
力と前記受信信号とを合成する回路とを備え、前記受信
信号に混入している前記送信信号の成分が前記合成の過
程で抑圧されるように前記調整がなされることを特徴と
する空中線共用器。In the antenna duplexer that guides the transmitted signal from the transmitter to the antenna and guides the received signal received by the antenna to the receiver, at least one of the amplitude or phase of the branched signal obtained by branching the transmitted signal is adjusted. The apparatus comprises an equalizer and a circuit for combining the output of the equalizer with the received signal, and the adjustment is performed so that components of the transmitted signal mixed in the received signal are suppressed during the combining process. An antenna duplexer characterized by:
JP57109324A 1982-06-25 1982-06-25 Common use device of antenna Pending JPS59232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57109324A JPS59232A (en) 1982-06-25 1982-06-25 Common use device of antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57109324A JPS59232A (en) 1982-06-25 1982-06-25 Common use device of antenna

Publications (1)

Publication Number Publication Date
JPS59232A true JPS59232A (en) 1984-01-05

Family

ID=14507336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57109324A Pending JPS59232A (en) 1982-06-25 1982-06-25 Common use device of antenna

Country Status (1)

Country Link
JP (1) JPS59232A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60214123A (en) * 1984-04-09 1985-10-26 Matsushita Electric Ind Co Ltd Antenna sharing device
US4682175A (en) * 1983-02-18 1987-07-21 Thomson Csf Frequency modulated continuous wave radar and application thereof to a altimetric probe
WO1996015596A1 (en) * 1994-11-15 1996-05-23 University Of Bristol Full-duplex radio transmitter/receiver

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833753A (en) * 1971-09-02 1973-05-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833753A (en) * 1971-09-02 1973-05-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682175A (en) * 1983-02-18 1987-07-21 Thomson Csf Frequency modulated continuous wave radar and application thereof to a altimetric probe
JPS60214123A (en) * 1984-04-09 1985-10-26 Matsushita Electric Ind Co Ltd Antenna sharing device
WO1996015596A1 (en) * 1994-11-15 1996-05-23 University Of Bristol Full-duplex radio transmitter/receiver

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