JPH01103930U - - Google Patents

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Publication number
JPH01103930U
JPH01103930U JP1987199350U JP19935087U JPH01103930U JP H01103930 U JPH01103930 U JP H01103930U JP 1987199350 U JP1987199350 U JP 1987199350U JP 19935087 U JP19935087 U JP 19935087U JP H01103930 U JPH01103930 U JP H01103930U
Authority
JP
Japan
Prior art keywords
antenna
transmitting
circuit
switching
diode
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
JP1987199350U
Other languages
Japanese (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 JP1987199350U priority Critical patent/JPH01103930U/ja
Publication of JPH01103930U publication Critical patent/JPH01103930U/ja
Pending legal-status Critical Current

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Description

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

第１図はこの考案の一実施例によるアンテナ切
換回路の回路図、第２図はアンテナ切換回路のブ
ロツク図、第３図は従来のアンテナ切換回路のブ
ロツクである。 図において、１は送信機１、２は受信機１、３
はアンテナ切換スイツチ、４は送信機２、５は受
信機２、６はアンテナ切換スイツチ、７はデユー
プレクサ、８はアンテナ、９はアンテナ切換スイ
ツチ、１０，１１，１２，１３，はバイアス端、
１４はＤＣカツトコンデンサ、１５はＲＦチヨー
クコイル、１６，１７，１８，１９，２０，２１
はダイオード、２２は送信端、２３は受信端、２
４は送信端、２５は受信端、２６はアンテナ端。
なお、図中、同一符号は同一、又は相当部分を示
す。 FIG. 1 is a circuit diagram of an antenna switching circuit according to an embodiment of this invention, FIG. 2 is a block diagram of the antenna switching circuit, and FIG. 3 is a block diagram of a conventional antenna switching circuit. In the figure, 1 is the transmitter 1, 2 is the receiver 1, 3
is an antenna changeover switch, 4 is a transmitter 2, 5 is a receiver 2, 6 is an antenna changeover switch, 7 is a duplexer, 8 is an antenna, 9 is an antenna changeover switch, 10, 11, 12, 13 are bias ends,
14 is a DC cut capacitor, 15 is an RF chain coil, 16, 17, 18, 19, 20, 21
is a diode, 22 is a transmitting end, 23 is a receiving end, 2
4 is a transmitting end, 25 is a receiving end, and 26 is an antenna end.
In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 周波数帯の異なる送受信回路を２系統備える無
線装置において、おのおの送受信回路のアンテナ
端（２端子）と一本の共用アンテナ間との接続切
換えを、ダイオードにより切換えるようにしたこ
とを特徴とするアンテナ切換回路。 Antenna switching in a wireless device equipped with two systems of transmitting and receiving circuits for different frequency bands, characterized in that connection switching between the antenna end (2 terminals) of each transmitting and receiving circuit and one common antenna is switched by a diode. circuit.
JP1987199350U 1987-12-28 1987-12-28 Pending JPH01103930U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987199350U JPH01103930U (en) 1987-12-28 1987-12-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987199350U JPH01103930U (en) 1987-12-28 1987-12-28

Publications (1)

Publication Number Publication Date
JPH01103930U true JPH01103930U (en) 1989-07-13

Family

ID=31489802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987199350U Pending JPH01103930U (en) 1987-12-28 1987-12-28

Country Status (1)

Country Link
JP (1) JPH01103930U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11205188A (en) * 1998-01-16 1999-07-30 Mitsubishi Electric Corp Transmission/reception switching circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11205188A (en) * 1998-01-16 1999-07-30 Mitsubishi Electric Corp Transmission/reception switching circuit

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