JPS6273632U - - Google Patents

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Publication number
JPS6273632U
JPS6273632U JP16469185U JP16469185U JPS6273632U JP S6273632 U JPS6273632 U JP S6273632U JP 16469185 U JP16469185 U JP 16469185U JP 16469185 U JP16469185 U JP 16469185U JP S6273632 U JPS6273632 U JP S6273632U
Authority
JP
Japan
Prior art keywords
antenna
input terminal
high frequency
frequency switch
switch 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
JP16469185U
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 JP16469185U priority Critical patent/JPS6273632U/ja
Publication of JPS6273632U publication Critical patent/JPS6273632U/ja
Pending legal-status Critical Current

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  • Electronic Switches (AREA)

Description

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

第１図はこの考案の高周波スイツチ回路の例を
示す図、第２図は半導体スイツチがオンとなつた
ときの高周波スイツチ回路を構成するローパスフ
イルタの等価回路を示す図、第３図はこの考案の
高周波スイツチ回路の遮断特性を示す図、第４図
は録画再生装置（ＶＴＲ）の構成例を示す図、第
５図は従来の高周波スイツチ回路の例を示す図、
第６図は従来の高周波スイツチ回路の遮断特性を
示す図である。 １１：アンテナ、１２：テレビジヨン受像機、
１２ａ：アンテナ入力端子、１３：信号通路、１
４：録画再生装置、１５：分配器、１６：高周波
スイツチ回路、１７：ＶＴＲチユーナ、１８：イ
ンピーダンス整合器、１９：記録回路、２１：回
転ヘツド、２２：磁気テープ、２３：再生回路、
２４：ＲＦモジユレータ、２５：コイル、２６：
コンデンサ、２７：ローパスフイルタ、２８：半
導体スイツチ、２９：制御信号、３１：直列回路
、３２：コンデンサ、ｆｃ：遮断周波数。 Fig. 1 is a diagram showing an example of the high frequency switch circuit of this invention, Fig. 2 is a diagram showing an equivalent circuit of a low-pass filter that constitutes the high frequency switch circuit when the semiconductor switch is turned on, and Fig. 3 is a diagram showing an example of the high frequency switch circuit of this invention. 4 is a diagram showing an example of the configuration of a recording/reproducing device (VTR), FIG. 5 is a diagram showing an example of a conventional high frequency switch circuit,
FIG. 6 is a diagram showing the cutoff characteristics of a conventional high frequency switch circuit. 11: antenna, 12: television receiver,
12a: Antenna input terminal, 13: Signal path, 1
4: Recording/playback device, 15: Distributor, 16: High frequency switch circuit, 17: VTR tuner, 18: Impedance matching device, 19: Recording circuit, 21: Rotating head, 22: Magnetic tape, 23: Playback circuit,
24: RF modulator, 25: coil, 26:
Capacitor, 27: Low pass filter, 28: Semiconductor switch, 29: Control signal, 31: Series circuit, 32: Capacitor, f c : Cutoff frequency.

Claims (1)

【実用新案登録請求の範囲】 Ａ アンテナとテレビジヨン受像機のアンテナ入
力端子の間に接続され、録画再生装置からテレビ
ジヨン受像機のアンテナ入力端子に再生信号を供
給する状態においてテレビジヨン受像機のアンテ
ナ入力端子とアンテナとの間の信号通路を遮断す
る高周波スイツチ回路において、 Ｂ 信号通路に対して直列に接続した複数のコイ
ルと、 Ｃ このコイルの各接続点と共通電位との間に接
続した複数のコンデンサと、 Ｄ このコンデンサと並列に接続したコンデンサ
と半導体スイツチから成る直列回路とから成る高
周波スイツチ回路。[Claims for Utility Model Registration] A. When the antenna is connected between the antenna and the antenna input terminal of the television receiver, and the reproduction signal is supplied from the recording/reproducing device to the antenna input terminal of the television receiver, In a high frequency switch circuit that cuts off the signal path between the antenna input terminal and the antenna, B. multiple coils connected in series to the signal path, and C. connected between each connection point of these coils and a common potential. A high frequency switch circuit consisting of a plurality of capacitors and a series circuit consisting of a capacitor and a semiconductor switch connected in parallel with the capacitor.
JP16469185U 1985-10-25 1985-10-25 Pending JPS6273632U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16469185U JPS6273632U (en) 1985-10-25 1985-10-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16469185U JPS6273632U (en) 1985-10-25 1985-10-25

Publications (1)

Publication Number Publication Date
JPS6273632U true JPS6273632U (en) 1987-05-12

Family

ID=31094039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16469185U Pending JPS6273632U (en) 1985-10-25 1985-10-25

Country Status (1)

Country Link
JP (1) JPS6273632U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4990481A (en) * 1972-12-28 1974-08-29
JPS5165868A (en) * 1974-12-04 1976-06-07 Matsushita Electric Industrial Co Ltd Suitsuchisochi
JPS5927634B2 (en) * 1980-03-17 1984-07-06 マンネスマン・アクチエンゲゼルシヤフト Method for forming a highly corrosion-resistant cement mortar coating layer on metal pipes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4990481A (en) * 1972-12-28 1974-08-29
JPS5165868A (en) * 1974-12-04 1976-06-07 Matsushita Electric Industrial Co Ltd Suitsuchisochi
JPS5927634B2 (en) * 1980-03-17 1984-07-06 マンネスマン・アクチエンゲゼルシヤフト Method for forming a highly corrosion-resistant cement mortar coating layer on metal pipes

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