JPS5679518A - Band-pass type active filter - Google Patents

Band-pass type active filter

Info

Publication number
JPS5679518A
JPS5679518A JP15600679A JP15600679A JPS5679518A JP S5679518 A JPS5679518 A JP S5679518A JP 15600679 A JP15600679 A JP 15600679A JP 15600679 A JP15600679 A JP 15600679A JP S5679518 A JPS5679518 A JP S5679518A
Authority
JP
Japan
Prior art keywords
band
type active
pass
active filter
pass type
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
JP15600679A
Other languages
Japanese (ja)
Inventor
Kazuhiro Kaneko
Shinpei Matsuzaki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15600679A priority Critical patent/JPS5679518A/en
Publication of JPS5679518A publication Critical patent/JPS5679518A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier

Landscapes

  • Networks Using Active Elements (AREA)

Abstract

PURPOSE:To save amplifying circuit and to decrease the space and power consumption, by directly connecting the primary and secondary circuits without buffer means. CONSTITUTION:The primary low-pass filter consisting of a resistor 1 and a capacitor 2, and the secondary high pass-filter consisting of resistors 6, 7, capacitors 4, 5 and amplifier 8, are directly connected to constitute a band-pass type active filter. In this case, the amplifier 8 separates the primary low-pass filter from the secondary high-pass filter, and the circuit constant is selected to have a prescribed characteristic.
JP15600679A 1979-11-30 1979-11-30 Band-pass type active filter Pending JPS5679518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15600679A JPS5679518A (en) 1979-11-30 1979-11-30 Band-pass type active filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15600679A JPS5679518A (en) 1979-11-30 1979-11-30 Band-pass type active filter

Publications (1)

Publication Number Publication Date
JPS5679518A true JPS5679518A (en) 1981-06-30

Family

ID=15618261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15600679A Pending JPS5679518A (en) 1979-11-30 1979-11-30 Band-pass type active filter

Country Status (1)

Country Link
JP (1) JPS5679518A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0258948A (en) * 1988-08-24 1990-02-28 Fujitsu Ltd Zero 1f receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0258948A (en) * 1988-08-24 1990-02-28 Fujitsu Ltd Zero 1f receiver

Similar Documents

Publication Publication Date Title
JPS5616314A (en) Surface elastic wave filter
JPS5577213A (en) Selective amplifier
JPS5679518A (en) Band-pass type active filter
JPS5560320A (en) Active filter
JPS56134815A (en) Filter circuit
JPS53125741A (en) Fdnr circuit of hybrid integrated circuit
JPS5547711A (en) Amplifying circuit
JPS5768917A (en) Hybrid circuit
GB1371343A (en) Filter circuit with gyrators and capacitors
JPS56110406A (en) Filter device for electric vehicle
SU675586A1 (en) Gyrator
JPS55121733A (en) Biquad filter
JPS5753129A (en) Active filter
JPS55149516A (en) Low pass filter
JPS54103659A (en) Asymmetrical gain unit
JPS5482644A (en) Active filter
JPS5772415A (en) Circuir having function of band pass filter and oscillator
JPS5673918A (en) Active filter of twin t type
JPS55127785A (en) Electric circuit
GB767753A (en) Improvements in or relating to ultra-high frequency amplifiers
JPS56152309A (en) Noise reduction circuit
JPS6121127U (en) Narrowband LC filter
JPS5489547A (en) Filter
JPS6457809A (en) Amplifier circuit
BUSS et al. Tunable filters using charge transfer devices[Interim Report, 16 Jul. 1974- 16 Mar. 1975]