JPS6030646U - active antenna - Google Patents

active antenna

Info

Publication number
JPS6030646U
JPS6030646U JP1983120509U JP12050983U JPS6030646U JP S6030646 U JPS6030646 U JP S6030646U JP 1983120509 U JP1983120509 U JP 1983120509U JP 12050983 U JP12050983 U JP 12050983U JP S6030646 U JPS6030646 U JP S6030646U
Authority
JP
Japan
Prior art keywords
antenna
active antenna
frequency
tuning
receiver
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
JP1983120509U
Other languages
Japanese (ja)
Inventor
晋児 福田
磯貝　保廣
Original Assignee
富士通テン株式会社
トヨタ自動車株式会社
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 富士通テン株式会社, トヨタ自動車株式会社 filed Critical 富士通テン株式会社
Priority to JP1983120509U priority Critical patent/JPS6030646U/en
Publication of JPS6030646U publication Critical patent/JPS6030646U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は本考案の一実施例を示す構成図、第２図は電子
同調型ラジオ受信機のチューニングバイアス電圧の周波
数特性図、第３図はオペアンプによる変換後の制御電圧
の周波特性図である。 図中、ＲＸはラジオ受信機、ＯＰはオペアンプ、ＡＤＣ
はＡ／Ｄコンバータ、ＡＮＴはフラフープアンテナ、Ｇ
Ｐは地板、Ｃ０ＡＸは給電同軸ケーブル、Ｃ，−Ｃ，は
付加コンデンサ、Ｄ　ｏ”　Ｄ　ｅはスイッチングダイ
オード、Ｔｒ□〜Ｔｒｅはドライバトランジスタである
。Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a frequency characteristic diagram of the tuning bias voltage of an electronically tuned radio receiver, and Fig. 3 is a frequency characteristic diagram of the control voltage after conversion by an operational amplifier. be. In the diagram, RX is a radio receiver, OP is an operational amplifier, and ADC.
is A/D converter, ANT is hula hoop antenna, G
P is a ground plane, C0AX is a power supply coaxial cable, C, -C are additional capacitors, D o'' De is a switching diode, and Tr□ to Tre are driver transistors.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] １本のフラフープアンテナと地板との間に、コンデンサ
とスイッチングダイオードとの直列回路を複数組並列に
接続し、且つ電子同調型ラジオ受信機のチューニングバ
イアス電圧を検出して該アンテナの共振点を該受信機の
同調周波数付近に変化させるように前記ダイオードを選
択的に導通させる回路を設けてなることを特徴とするア
クティブアンテナ。Multiple series circuits of capacitors and switching diodes are connected in parallel between one hula hoop antenna and the ground plane, and the tuning bias voltage of an electronically tuned radio receiver is detected to locate the resonance point of the antenna. 1. An active antenna comprising a circuit that selectively makes the diode conductive so as to change the frequency to around the tuning frequency of a receiver.
JP1983120509U 1983-08-02 1983-08-02 active antenna Pending JPS6030646U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1983120509U JPS6030646U (en) 1983-08-02 1983-08-02 active antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1983120509U JPS6030646U (en) 1983-08-02 1983-08-02 active antenna

Publications (1)

Publication Number Publication Date
JPS6030646U true JPS6030646U (en) 1985-03-01

Family

ID=30276170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1983120509U Pending JPS6030646U (en) 1983-08-02 1983-08-02 active antenna

Country Status (1)

Country Link
JP (1) JPS6030646U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740688A (en) * 1980-08-25 1982-03-06 Hitachi Ltd Nuclear reactor control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740688A (en) * 1980-08-25 1982-03-06 Hitachi Ltd Nuclear reactor control device

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