JPS5772410A - Input filter for high frequency circuit - Google Patents

Input filter for high frequency circuit

Info

Publication number
JPS5772410A
JPS5772410A JP14696980A JP14696980A JPS5772410A JP S5772410 A JPS5772410 A JP S5772410A JP 14696980 A JP14696980 A JP 14696980A JP 14696980 A JP14696980 A JP 14696980A JP S5772410 A JPS5772410 A JP S5772410A
Authority
JP
Japan
Prior art keywords
diodes
filters
high frequency
frequency circuit
input filter
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
JP14696980A
Other languages
Japanese (ja)
Other versions
JPS6336569B2 (en
Inventor
Takeshi Saito
Susumu Yamamoto
Seiya Asai
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14696980A priority Critical patent/JPS5772410A/en
Publication of JPS5772410A publication Critical patent/JPS5772410A/en
Publication of JPS6336569B2 publication Critical patent/JPS6336569B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/0115Frequency selective two-port networks comprising only inductors and capacitors
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/17Structural details of sub-circuits of frequency selective networks
    • H03H7/1741Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/175Series LC in series path
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/17Structural details of sub-circuits of frequency selective networks
    • H03H7/1741Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1775Parallel LC in shunt or branch path
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • H03H7/17Structural details of sub-circuits of frequency selective networks
    • H03H7/1741Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1791Combined LC in shunt or branch path

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filters And Equalizers (AREA)

Abstract

PURPOSE:To reduce the interference between filters, by connecting two diodes, at least, in parallel to another filter circuit in respect to a circuit which switches band- pass filters by diodes. CONSTITUTION:In case that an input passes through a band-pass filter 3 or 4, diodes 7, 11, and 16 or diodes 8, 12, and 16 are conductive, and all other diodes are nonconductive. At this time, a diode 15 in the input side is made nonconductive to reduce the influence of filters 5 and 6 upon filters 3 and 4. In case that the input passes through the band-pass filter 5 or 6, diodes 9, 13, and 15 or diodes 10, 14, and 15 are conductive, and all other diodes are nonconductive. The diode 16 is made nonconductive to reduce the influence of filters 3 and 4.
JP14696980A 1980-10-22 1980-10-22 Input filter for high frequency circuit Granted JPS5772410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14696980A JPS5772410A (en) 1980-10-22 1980-10-22 Input filter for high frequency circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14696980A JPS5772410A (en) 1980-10-22 1980-10-22 Input filter for high frequency circuit

Publications (2)

Publication Number Publication Date
JPS5772410A true JPS5772410A (en) 1982-05-06
JPS6336569B2 JPS6336569B2 (en) 1988-07-20

Family

ID=15419667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14696980A Granted JPS5772410A (en) 1980-10-22 1980-10-22 Input filter for high frequency circuit

Country Status (1)

Country Link
JP (1) JPS5772410A (en)

Also Published As

Publication number Publication date
JPS6336569B2 (en) 1988-07-20

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