JPH0167840U - - Google Patents

Info

Publication number
JPH0167840U
JPH0167840U JP1987162468U JP16246887U JPH0167840U JP H0167840 U JPH0167840 U JP H0167840U JP 1987162468 U JP1987162468 U JP 1987162468U JP 16246887 U JP16246887 U JP 16246887U JP H0167840 U JPH0167840 U JP H0167840U
Authority
JP
Japan
Prior art keywords
receiving
antenna
switching circuit
transmitting
reception
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
Application number
JP1987162468U
Other languages
English (en)
Other versions
JPH0614516Y2 (ja
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 filed Critical
Priority to JP1987162468U priority Critical patent/JPH0614516Y2/ja
Publication of JPH0167840U publication Critical patent/JPH0167840U/ja
Application granted granted Critical
Publication of JPH0614516Y2 publication Critical patent/JPH0614516Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Transceivers (AREA)
  • Noise Elimination (AREA)

Description

【図面の簡単な説明】
第１図はこの考案に係るトランシーバの送受信
切換回路の実施例を示す回路図、第２図は従来の
トランシーバの要部のブロツク図である。 主要部分の符号の説明、１：第１のアンテナ、
２：送受信切換回路、３：第２のアンテナ、４：
コンバータ、５：送信部、６：受信部、１２：1/
4λ回路、１３：切換用のダイオード。

Claims (1)

  1. 【実用新案登録請求の範囲】 送受信用に設けた第１のアンテナと、第１のア
    ンテナで使用する周波数帯と異なる周波数帯の電
    波を専ら受信するために設けた第２のアンテナと
    からなる異なる二つの周波数帯を受信可能にした
    受信部と送信部を有するトランシーバの送受信切
    換回路において、 前記送信部切換回路にダイオードを設けると共
    に、受信用の第２のアンテナを使用する場合には
    、前記送受信切換回路に設けたダイオードを「オ
    ン」状態にして、第１のアンテナからのスプリア
    ス受信をなくすように構成したことを特徴とする
    トランシーバの送受信切換回路。
JP1987162468U 1987-10-26 1987-10-26 トランシーバの送受信切換回路 Expired - Lifetime JPH0614516Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987162468U JPH0614516Y2 (ja) 1987-10-26 1987-10-26 トランシーバの送受信切換回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987162468U JPH0614516Y2 (ja) 1987-10-26 1987-10-26 トランシーバの送受信切換回路

Publications (2)

Publication Number Publication Date
JPH0167840U true JPH0167840U (ja) 1989-05-01
JPH0614516Y2 JPH0614516Y2 (ja) 1994-04-13

Family

ID=31446323

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987162468U Expired - Lifetime JPH0614516Y2 (ja) 1987-10-26 1987-10-26 トランシーバの送受信切換回路

Country Status (1)

Country Link
JP (1) JPH0614516Y2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07297749A (ja) * 1994-04-28 1995-11-10 Nec Corp 複数のアンテナを備える無線装置
WO1997004533A1 (fr) * 1995-07-19 1997-02-06 Tdk Corporation Commutateur d'antenne

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS536074B2 (ja) * 1973-10-08 1978-03-04
JPS5773533A (en) * 1980-10-24 1982-05-08 Hitachi Denshi Ltd Antenna switch circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07297749A (ja) * 1994-04-28 1995-11-10 Nec Corp 複数のアンテナを備える無線装置
WO1997004533A1 (fr) * 1995-07-19 1997-02-06 Tdk Corporation Commutateur d'antenne

Also Published As

Publication number Publication date
JPH0614516Y2 (ja) 1994-04-13

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