JPH02138982U - - Google Patents

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Publication number
JPH02138982U
JPH02138982U JP1989048693U JP4869389U JPH02138982U JP H02138982 U JPH02138982 U JP H02138982U JP 1989048693 U JP1989048693 U JP 1989048693U JP 4869389 U JP4869389 U JP 4869389U JP H02138982 U JPH02138982 U JP H02138982U
Authority
JP
Japan
Prior art keywords
circuit
signal
channel
adjacent
converts
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.)
Granted
Application number
JP1989048693U
Other languages
English (en)
Other versions
JP2549210Y2 (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 JP1989048693U priority Critical patent/JP2549210Y2/ja
Publication of JPH02138982U publication Critical patent/JPH02138982U/ja
Application granted granted Critical
Publication of JP2549210Y2 publication Critical patent/JP2549210Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Television Systems (AREA)
  • Filters And Equalizers (AREA)

Description

【図面の簡単な説明】
第１図は本考案の基本回路図、第２図は必要と
する周波数特性図、第３図は連立チエビシエフタ
イプの低域フイルタから帯域フイルタへの変換を
説明する図、第４図は連立チエビシエフタイプの
帯域フイルタによる周波数特性図、第５図は本考
案の一実施例の回路図、第６図は理想の周波数特
性図、第７図はトラツプ回路を設けない場合の周
波数特性図、第８図及び第９図は従来の各例の回
路図、第１０図は第８図に示す回路による周波数
特性図である。 １……入力端子、２……第１ミキサ、５′……
第２ミキサ、２０，２１……共振回路、２２，２
３……トラツプ回路、２４……帯域フイルタ、Ｃ
２〜Ｃ５……コンデンサ、Ｌ２〜Ｌ５……コイル
。

Claims (1)

  1. 【実用新案登録請求の範囲】 受信周波数を一旦高い周波数に変換した後、テ
    レビジヨン受像機の空きチヤンネルの低い周波数
    に変換し、該受信周波数に対する隣接チヤンネル
    の信号を減衰させる回路を有するＣＡＴＶ受信機
    のコンバータにおいて、 上記隣接チヤンネルの信号を減衰させる回路を
    、上記隣接チヤンネル信号に減衰域をもつトラツ
    プ回路を有する連立チエビシエフタイプの帯域フ
    イルタにて構成してなるＣＡＴＶ受信機のコンバ
    ータ。
JP1989048693U 1989-04-25 1989-04-25 Ｃａｔｖ受信機のコンバータ Expired - Lifetime JP2549210Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989048693U JP2549210Y2 (ja) 1989-04-25 1989-04-25 Ｃａｔｖ受信機のコンバータ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989048693U JP2549210Y2 (ja) 1989-04-25 1989-04-25 Ｃａｔｖ受信機のコンバータ

Publications (2)

Publication Number Publication Date
JPH02138982U true JPH02138982U (ja) 1990-11-20
JP2549210Y2 JP2549210Y2 (ja) 1997-09-30

Family

ID=31565736

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989048693U Expired - Lifetime JP2549210Y2 (ja) 1989-04-25 1989-04-25 Ｃａｔｖ受信機のコンバータ

Country Status (1)

Country Link
JP (1) JP2549210Y2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011130083A (ja) * 2009-12-16 2011-06-30 Mitsubishi Electric Corp 可変フィルタ

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55156414A (en) * 1979-05-25 1980-12-05 Matsushita Electric Ind Co Ltd Band pass filter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55156414A (en) * 1979-05-25 1980-12-05 Matsushita Electric Ind Co Ltd Band pass filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011130083A (ja) * 2009-12-16 2011-06-30 Mitsubishi Electric Corp 可変フィルタ

Also Published As

Publication number Publication date
JP2549210Y2 (ja) 1997-09-30

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term