JPS5753118A - Selecting circuit for pass band - Google Patents

Selecting circuit for pass band

Info

Publication number
JPS5753118A
JPS5753118A JP12817580A JP12817580A JPS5753118A JP S5753118 A JPS5753118 A JP S5753118A JP 12817580 A JP12817580 A JP 12817580A JP 12817580 A JP12817580 A JP 12817580A JP S5753118 A JPS5753118 A JP S5753118A
Authority
JP
Japan
Prior art keywords
reactance element
switching diode
pass band
selecting circuit
center frequency
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
JP12817580A
Other languages
Japanese (ja)
Other versions
JPS6113409B2 (en
Inventor
Shigeru Sawada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP12817580A priority Critical patent/JPS5753118A/en
Publication of JPS5753118A publication Critical patent/JPS5753118A/en
Publication of JPS6113409B2 publication Critical patent/JPS6113409B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Filters And Equalizers (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To eliminate the spurious resonance, by providing a reactance element in the series circuit consisting of plural filters and a switching diode which is used to select them. CONSTITUTION:When a changeover switch 6 is switched to the side of a fixed resistance 4A and is closed, a switching diode 3A is turned on, and an auxiliary reactance element 11A is connected in parallel with a main tuning circuit 10. As the result, the main tuning circuit 10 and the reactance element 11A resonate in the center frequency of a ceramic filter 2A. At this time, the spurious of the center frequency of a ceramic filter 2B caused by the leak impedance of a cut-off switching diode 3B is suppressed by a reactance element 11B.
JP12817580A 1980-09-16 1980-09-16 Selecting circuit for pass band Granted JPS5753118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12817580A JPS5753118A (en) 1980-09-16 1980-09-16 Selecting circuit for pass band

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12817580A JPS5753118A (en) 1980-09-16 1980-09-16 Selecting circuit for pass band

Publications (2)

Publication Number Publication Date
JPS5753118A true JPS5753118A (en) 1982-03-30
JPS6113409B2 JPS6113409B2 (en) 1986-04-14

Family

ID=14978261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12817580A Granted JPS5753118A (en) 1980-09-16 1980-09-16 Selecting circuit for pass band

Country Status (1)

Country Link
JP (1) JPS5753118A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5933061A (en) * 1997-08-08 1999-08-03 Nec Corporation Chip-type piezoelectric filter and filter circuit using such piezoelectric filter
WO2017033466A1 (en) * 2015-08-27 2017-03-02 パナソニックＩｐマネジメント株式会社 Filter device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6396112U (en) * 1986-12-15 1988-06-21
JPS6448813U (en) * 1987-09-21 1989-03-27
JPH0361015U (en) * 1989-10-17 1991-06-14

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5933061A (en) * 1997-08-08 1999-08-03 Nec Corporation Chip-type piezoelectric filter and filter circuit using such piezoelectric filter
WO2017033466A1 (en) * 2015-08-27 2017-03-02 パナソニックＩｐマネジメント株式会社 Filter device

Also Published As

Publication number Publication date
JPS6113409B2 (en) 1986-04-14

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