JPS63156128U - - Google Patents

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Publication number
JPS63156128U
JPS63156128U JP1987049655U JP4965587U JPS63156128U JP S63156128 U JPS63156128 U JP S63156128U JP 1987049655 U JP1987049655 U JP 1987049655U JP 4965587 U JP4965587 U JP 4965587U JP S63156128 U JPS63156128 U JP S63156128U
Authority
JP
Japan
Prior art keywords
antenna
field strength
voltage
variable capacitance
electric field
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
JP1987049655U
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 JP1987049655U priority Critical patent/JPS63156128U/ja
Publication of JPS63156128U publication Critical patent/JPS63156128U/ja
Pending legal-status Critical Current

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  • Transceivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Description

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

第１図は本考案の一実施例のインピーダンスマ
ツチング装置１の電気的構成を示すブロツク図、
第２図は受信回路３から出力される電界強度信号
と受信電界強度との関係を示す図である。 １……インピーダンスマツチング装置、２……
アンテナ、３……受信回路、４……低周波増幅回
路、５……スピーカ、６……検知回路、７……制
御回路、８……可変容量ダイオード。 FIG. 1 is a block diagram showing the electrical configuration of an impedance matching device 1 according to an embodiment of the present invention.
FIG. 2 is a diagram showing the relationship between the field strength signal output from the receiving circuit 3 and the received field strength. 1... Impedance matching device, 2...
Antenna, 3... Receiving circuit, 4... Low frequency amplifier circuit, 5... Speaker, 6... Detection circuit, 7... Control circuit, 8... Variable capacitance diode.

Claims (1)

【実用新案登録請求の範囲】 アンテナと、 アンテナからの信号を受信してその電界強度を
表わす信号を導出する受信回路と、 アンテナに並列に接続される電圧制御形可変容
量ダイオードと、 前記受信回路の出力に応答して受信電界強度が
最大となるように可変容量ダイオードに電圧を与
える制御回路とを含むことを特徴とするアンテナ
のインピーダンスマツチング装置。[Claims for Utility Model Registration] An antenna, a receiving circuit that receives a signal from the antenna and derives a signal representing the electric field strength thereof, a voltage-controlled variable capacitance diode connected in parallel to the antenna, and the receiving circuit. An antenna impedance matching device comprising: a control circuit that applies a voltage to a variable capacitance diode so that the received electric field strength is maximized in response to the output of the antenna.
JP1987049655U 1987-03-31 1987-03-31 Pending JPS63156128U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987049655U JPS63156128U (en) 1987-03-31 1987-03-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987049655U JPS63156128U (en) 1987-03-31 1987-03-31

Publications (1)

Publication Number Publication Date
JPS63156128U true JPS63156128U (en) 1988-10-13

Family

ID=30872307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987049655U Pending JPS63156128U (en) 1987-03-31 1987-03-31

Country Status (1)

Country Link
JP (1) JPS63156128U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003332934A (en) * 2002-05-09 2003-11-21 Yokowo Co Ltd Optimization antenna apparatus
US10333572B2 (en) 2015-08-26 2019-06-25 Murata Manufacturing Co., Ltd. Antenna tuner control circuit, front-end circuit and communication device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61135235A (en) * 1984-12-05 1986-06-23 Fujitsu Ltd Antenna system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61135235A (en) * 1984-12-05 1986-06-23 Fujitsu Ltd Antenna system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003332934A (en) * 2002-05-09 2003-11-21 Yokowo Co Ltd Optimization antenna apparatus
US10333572B2 (en) 2015-08-26 2019-06-25 Murata Manufacturing Co., Ltd. Antenna tuner control circuit, front-end circuit and communication device

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