JPS56103516A - Variable attenuating circuit - Google Patents

Variable attenuating circuit

Info

Publication number
JPS56103516A
JPS56103516A JP571580A JP571580A JPS56103516A JP S56103516 A JPS56103516 A JP S56103516A JP 571580 A JP571580 A JP 571580A JP 571580 A JP571580 A JP 571580A JP S56103516 A JPS56103516 A JP S56103516A
Authority
JP
Japan
Prior art keywords
high frequency
pin diode
terminal
inductance
terminals
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
JP571580A
Other languages
Japanese (ja)
Other versions
JPS6249766B2 (en
Inventor
Susumu Yamamoto
Takeshi Saito
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 JP571580A priority Critical patent/JPS56103516A/en
Publication of JPS56103516A publication Critical patent/JPS56103516A/en
Publication of JPS6249766B2 publication Critical patent/JPS6249766B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators
    • H03H7/25—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable
    • H03H7/253—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable the element being a diode
    • H03H7/255—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable the element being a diode the element being a PIN diode

Landscapes

  • Attenuators (AREA)

Abstract

PURPOSE:To ensure a low loss widely from the VHF band through the UHF band for a high frequency attenuating circuit, by installing an inductance in series to the PIN diode between the input and output terminals. CONSTITUTION:The circuit contains the input terminal 4 to which the high frequency signal is supplied plus the output terminal 5 to which the high frequency signal is delivered. The terminals 4 and 5 are connected in terms of a high frequency via the 1st PIN diode group 2 and the inductance 8. Furthermore the 2nd PIN diode group 1 is connected in terms of a high frequency between the terminal 4 and the earth along with the 3rd PIN diode group 3 connected between the terminal 5 and the earth, respectively. A low band pass filter is formed with the parasitic capacity produced across the PIN diode that attenuates and passes the above-mentioned high frequencies, the capacities 6 and 7 among the terminals of the PIN diode and the inductance 8, thus, the loss at the high frequency band is reduced.
JP571580A 1980-01-23 1980-01-23 Variable attenuating circuit Granted JPS56103516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP571580A JPS56103516A (en) 1980-01-23 1980-01-23 Variable attenuating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP571580A JPS56103516A (en) 1980-01-23 1980-01-23 Variable attenuating circuit

Publications (2)

Publication Number Publication Date
JPS56103516A true JPS56103516A (en) 1981-08-18
JPS6249766B2 JPS6249766B2 (en) 1987-10-21

Family

ID=11618808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP571580A Granted JPS56103516A (en) 1980-01-23 1980-01-23 Variable attenuating circuit

Country Status (1)

Country Link
JP (1) JPS56103516A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6227350B1 (en) 1999-06-28 2001-05-08 Nippon Tsusho Kabushiki Kaisha Belt cleaner
JP2008264918A (en) * 2007-04-19 2008-11-06 Toyota Auto Body Co Ltd Feeding means and component feeder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS551764A (en) * 1978-06-20 1980-01-08 Mitsubishi Electric Corp Variable attenuation circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS551764A (en) * 1978-06-20 1980-01-08 Mitsubishi Electric Corp Variable attenuation circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6227350B1 (en) 1999-06-28 2001-05-08 Nippon Tsusho Kabushiki Kaisha Belt cleaner
JP2008264918A (en) * 2007-04-19 2008-11-06 Toyota Auto Body Co Ltd Feeding means and component feeder

Also Published As

Publication number Publication date
JPS6249766B2 (en) 1987-10-21

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