JPS615042U - High frequency amplifier circuit - Google Patents

High frequency amplifier circuit

Info

Publication number
JPS615042U
JPS615042U JP8852784U JP8852784U JPS615042U JP S615042 U JPS615042 U JP S615042U JP 8852784 U JP8852784 U JP 8852784U JP 8852784 U JP8852784 U JP 8852784U JP S615042 U JPS615042 U JP S615042U
Authority
JP
Japan
Prior art keywords
mode
amplifier circuit
high frequency
distance
circuit
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
JP8852784U
Other languages
Japanese (ja)
Inventor
万里穂 高橋
豊和 江口
Original Assignee
株式会社東芝
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 株式会社東芝 filed Critical 株式会社東芝
Priority to JP8852784U priority Critical patent/JPS615042U/en
Publication of JPS615042U publication Critical patent/JPS615042U/en
Pending legal-status Critical Current

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

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 the drawing]

第１図はこの考案に係る高周波増幅回路の一実施例を示
す回路図、第２図は従来の高周波増幅回路の構成を示す
回路図である。 １１・・・同調回路、１２・・・ＦＥＴ増幅回路、１３
・・・モード切換スイッチ、Ｒ４・・・補正抵抗。FIG. 1 is a circuit diagram showing an embodiment of a high frequency amplification circuit according to this invention, and FIG. 2 is a circuit diagram showing the configuration of a conventional high frequency amplification circuit. 11... Tuning circuit, 12... FET amplifier circuit, 13
...Mode changeover switch, R4...Correction resistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 同調回路から出力される高周波信号をドレイン接地型Ｆ
ＥＴ増幅回路で増幅するもので、ＦＥＴのソース抵抗を
モード切換スイッチで選択的に分割することにより前記
ＦＥＴ増幅回路の増幅度を切換えて遠距離受信モード及
び近距離モードを選択切換設定するモード切換手段を有
する高周波増幅回路において、前記モード切換スイッチ
を遠距離−モードから近距離モードに切換えるときＦＥ
Ｔのソースインピーダンス成分が小さくなるように前記
モード切換スイッチに並列に接続される補正抵抗を具備
し、前記モード切換え時にＦＥＴ増幅回路の入カキャバ
シタンスが変化しないようにしたことを特徴とする高周
波増幅回路。The high frequency signal output from the tuned circuit is connected to the drain-grounded type F.
Amplification is performed by an ET amplifier circuit, and the mode switching mode selects and sets a long-distance reception mode and a short-distance mode by selectively dividing the source resistance of the FET with a mode selection switch to switch the amplification degree of the FET amplifier circuit. In the high frequency amplification circuit having means, when the mode changeover switch is switched from the long distance mode to the short distance mode, the FE
A high frequency amplifier circuit comprising a correction resistor connected in parallel to the mode changeover switch so that the source impedance component of T is small, so that the input capacitance of the FET amplifier circuit does not change when changing the mode. .
JP8852784U 1984-06-14 1984-06-14 High frequency amplifier circuit Pending JPS615042U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8852784U JPS615042U (en) 1984-06-14 1984-06-14 High frequency amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8852784U JPS615042U (en) 1984-06-14 1984-06-14 High frequency amplifier circuit

Publications (1)

Publication Number Publication Date
JPS615042U true JPS615042U (en) 1986-01-13

Family

ID=30641754

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8852784U Pending JPS615042U (en) 1984-06-14 1984-06-14 High frequency amplifier circuit

Country Status (1)

Country Link
JP (1) JPS615042U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6363311U (en) * 1986-10-15 1988-04-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6363311U (en) * 1986-10-15 1988-04-26
JPH058801Y2 (en) * 1986-10-15 1993-03-04

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