JPS6224539U - - Google Patents

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Publication number
JPS6224539U
JPS6224539U JP11617485U JP11617485U JPS6224539U JP S6224539 U JPS6224539 U JP S6224539U JP 11617485 U JP11617485 U JP 11617485U JP 11617485 U JP11617485 U JP 11617485U JP S6224539 U JPS6224539 U JP S6224539U
Authority
JP
Japan
Prior art keywords
antenna
transmitter
power
signal
mismatching
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
JP11617485U
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 JP11617485U priority Critical patent/JPS6224539U/ja
Publication of JPS6224539U publication Critical patent/JPS6224539U/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図は本考案に係るアンテナチユーナ保護回
路の実施例を示すブロツク図、第２図は第１図に
示す比較回路２４，４６の具体的な回路図、第３
図は従来例を示すブロツク図である。 １４……インピーダンスマツチング回路、１６
……アンテナカツプラー部、２４，４６……比較
回路、４４……保護回路。 FIG. 1 is a block diagram showing an embodiment of the antenna tuner protection circuit according to the present invention, FIG. 2 is a specific circuit diagram of the comparison circuits 24 and 46 shown in FIG. 1, and FIG.
The figure is a block diagram showing a conventional example. 14... Impedance matching circuit, 16
... Antenna coupler section, 24, 46 ... Comparison circuit, 44 ... Protection circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] アンテナと送信部間の定在波比が設定値以上で
あるときにミスマツチング信号を出力する比較手
段と、当該ミスマツチング信号を入力したときに
送信部へパワーダウン信号を出力するパワーダウ
ン信号出力手段とにより、アンテナチユーニング
動作終了時においても前記ミスマツチング信号に
より送信部のパワーを制限し、アンテナカプラー
を保護することを特徴とするアンテナチユーナ保
護回路。 Comparing means for outputting a mismatching signal when the standing wave ratio between the antenna and the transmitter is equal to or higher than a set value; and power-down signal output means for outputting a power-down signal to the transmitter when the mismatching signal is input. An antenna tuner protection circuit characterized in that the power of the transmitter is limited by the mismatching signal even at the end of the antenna tuning operation to protect the antenna coupler.
JP11617485U 1985-07-29 1985-07-29 Pending JPS6224539U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11617485U JPS6224539U (en) 1985-07-29 1985-07-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11617485U JPS6224539U (en) 1985-07-29 1985-07-29

Publications (1)

Publication Number Publication Date
JPS6224539U true JPS6224539U (en) 1987-02-14

Family

ID=31000518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11617485U Pending JPS6224539U (en) 1985-07-29 1985-07-29

Country Status (1)

Country Link
JP (1) JPS6224539U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63248225A (en) * 1987-04-03 1988-10-14 Anritsu Corp Automatic tuning device
JPS6440568U (en) * 1987-08-31 1989-03-10
JPH0217774U (en) * 1988-07-18 1990-02-06
JP2007097031A (en) * 2005-09-30 2007-04-12 Kenwood Corp Output circuit protecting apparatus for radio unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5146888U (en) * 1974-10-04 1976-04-07
JPS57201344A (en) * 1981-06-03 1982-12-09 Mitsubishi Electric Corp Controlling device for transmitted output

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5146888U (en) * 1974-10-04 1976-04-07
JPS57201344A (en) * 1981-06-03 1982-12-09 Mitsubishi Electric Corp Controlling device for transmitted output

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63248225A (en) * 1987-04-03 1988-10-14 Anritsu Corp Automatic tuning device
JPS6440568U (en) * 1987-08-31 1989-03-10
JPH0217774U (en) * 1988-07-18 1990-02-06
JP2007097031A (en) * 2005-09-30 2007-04-12 Kenwood Corp Output circuit protecting apparatus for radio unit

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