JPS59106226U - Filter center frequency detection circuit - Google Patents

Filter center frequency detection circuit

Info

Publication number
JPS59106226U
JPS59106226U JP29983U JP29983U JPS59106226U JP S59106226 U JPS59106226 U JP S59106226U JP 29983 U JP29983 U JP 29983U JP 29983 U JP29983 U JP 29983U JP S59106226 U JPS59106226 U JP S59106226U
Authority
JP
Japan
Prior art keywords
detection circuit
center frequency
frequency detection
filter center
amplifier
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
JP29983U
Other languages
Japanese (ja)
Inventor
稔 倉方
Original Assignee
八重洲無線株式会社
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 八重洲無線株式会社 filed Critical 八重洲無線株式会社
Priority to JP29983U priority Critical patent/JPS59106226U/en
Publication of JPS59106226U publication Critical patent/JPS59106226U/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 the drawing]

第１図は従来のフィルタの中心周波数検出回路のブロッ
ク図であって、第２図は本考案の一実施例を示すフィル
タの中心周波数検出回路のブロック図である。 １．３．６・・・アンプ、２，７・・・バンドパスフィ
ルタ、４・・・検波器、５・・・Ｓメータ。FIG. 1 is a block diagram of a conventional filter center frequency detection circuit, and FIG. 2 is a block diagram of a filter center frequency detection circuit showing an embodiment of the present invention. 1.3.6...Amplifier, 2,7...Band pass filter, 4...Detector, 5...S meter.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] アンプとバンドパスフィルタとアンプと検波器およびＳ
メータとを縦続結線した中間周波数回路において、第２
のアンプと検波器との間に第３のアンプと狭帯域のバン
ドパスフィルタとを挿入して、Ｓメータにおける前記バ
ンドパスフィルタの中心周波数の検出をシャープにした
ことを特徴とするフィルタの中心周波数検出回路。Amplifier, bandpass filter, amplifier, detector, and S
In the intermediate frequency circuit connected in cascade with the meter, the second
A third amplifier and a narrowband bandpass filter are inserted between the amplifier and the detector to sharply detect the center frequency of the bandpass filter in the S meter. Frequency detection circuit.
JP29983U 1983-01-06 1983-01-06 Filter center frequency detection circuit Pending JPS59106226U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29983U JPS59106226U (en) 1983-01-06 1983-01-06 Filter center frequency detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29983U JPS59106226U (en) 1983-01-06 1983-01-06 Filter center frequency detection circuit

Publications (1)

Publication Number Publication Date
JPS59106226U true JPS59106226U (en) 1984-07-17

Family

ID=30132059

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29983U Pending JPS59106226U (en) 1983-01-06 1983-01-06 Filter center frequency detection circuit

Country Status (1)

Country Link
JP (1) JPS59106226U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019302B1 (en) * 1970-12-28 1975-07-05
JPS51134161A (en) * 1975-05-16 1976-11-20 Hitachi Ltd Meter circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019302B1 (en) * 1970-12-28 1975-07-05
JPS51134161A (en) * 1975-05-16 1976-11-20 Hitachi Ltd Meter circuit

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