JPS5744314A - Variable attenuator - Google Patents

Variable attenuator

Info

Publication number
JPS5744314A
JPS5744314A JP12024180A JP12024180A JPS5744314A JP S5744314 A JPS5744314 A JP S5744314A JP 12024180 A JP12024180 A JP 12024180A JP 12024180 A JP12024180 A JP 12024180A JP S5744314 A JPS5744314 A JP S5744314A
Authority
JP
Japan
Prior art keywords
resistance
impedance
constant
pin diodes
quarter
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
JP12024180A
Other languages
Japanese (ja)
Inventor
Yoichi Ara
Sachiro Fukuda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12024180A priority Critical patent/JPS5744314A/en
Publication of JPS5744314A publication Critical patent/JPS5744314A/en
Pending 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

Abstract

PURPOSE:To drive three PIN diodes with the same current by composing parallel elements of quarter-wavelength lines of characteristic impedance Z0 terminated by the parallel connecting circuit of a resistance Z0 and a PIN diode. CONSTITUTION:As the series element of a pi-shaped constant-resistance variable attenuator, a PIN diode 34 is used, and two parallel elements are composed by terminating quarter-wavelength lines 32 and 33, having characteristic impedance equal to constant resistance impedance Z0, by the parallel connecting circuit of a resistance impedance Z0 equal to the constant-resistance impedance Z0 and PIN diodes 15 and 16. Then, a control voltage from a control circuit is applied between a plus-side DC voltage terminal 30 and a minus-side DC voltage terminal 31 to flow the same current to the PIN diodes 15, 16 and 34, thereby varying the extent of attenuation of signal input and output terminals 1 and 2.
JP12024180A 1980-08-29 1980-08-29 Variable attenuator Pending JPS5744314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12024180A JPS5744314A (en) 1980-08-29 1980-08-29 Variable attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12024180A JPS5744314A (en) 1980-08-29 1980-08-29 Variable attenuator

Publications (1)

Publication Number Publication Date
JPS5744314A true JPS5744314A (en) 1982-03-12

Family

ID=14781330

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12024180A Pending JPS5744314A (en) 1980-08-29 1980-08-29 Variable attenuator

Country Status (1)

Country Link
JP (1) JPS5744314A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754240A (en) * 1985-11-20 1988-06-28 Gte Telecomunicazioni, S.P.A. Pin diode attenuators
JPH01117408A (en) * 1987-10-30 1989-05-10 Kokusai Electric Co Ltd High frequency variable attenuator
JPH02156733A (en) * 1988-12-09 1990-06-15 Kokusai Electric Co Ltd High frequency attenuator with detector
US4942375A (en) * 1987-06-30 1990-07-17 U.S. Philips Corporation Variable attenuation device intended to be inserted between a transmitter circuit and load circuit
EP0788223A2 (en) 1996-01-30 1997-08-06 Nec Corporation Pin diode variable attenuator
US5808520A (en) * 1995-03-22 1998-09-15 Nec Corporation Attenuating circuit using quarter-wave lines
US5834988A (en) * 1997-03-12 1998-11-10 Zenith Electronics Corporation Frequency compensated PIN diode attenuator
WO2006100726A1 (en) * 2005-03-18 2006-09-28 Fujitsu Limited Variable attenuator and integrated circuit
JP2007074028A (en) * 2005-09-02 2007-03-22 Mitsubishi Electric Corp Diode switch and attenuator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754240A (en) * 1985-11-20 1988-06-28 Gte Telecomunicazioni, S.P.A. Pin diode attenuators
US4942375A (en) * 1987-06-30 1990-07-17 U.S. Philips Corporation Variable attenuation device intended to be inserted between a transmitter circuit and load circuit
JPH01117408A (en) * 1987-10-30 1989-05-10 Kokusai Electric Co Ltd High frequency variable attenuator
JPH02156733A (en) * 1988-12-09 1990-06-15 Kokusai Electric Co Ltd High frequency attenuator with detector
US5808520A (en) * 1995-03-22 1998-09-15 Nec Corporation Attenuating circuit using quarter-wave lines
EP0788223A2 (en) 1996-01-30 1997-08-06 Nec Corporation Pin diode variable attenuator
US5862464A (en) * 1996-01-30 1999-01-19 Nec Corporation Pin diode variable attenuator
US5834988A (en) * 1997-03-12 1998-11-10 Zenith Electronics Corporation Frequency compensated PIN diode attenuator
WO2006100726A1 (en) * 2005-03-18 2006-09-28 Fujitsu Limited Variable attenuator and integrated circuit
US7453329B2 (en) 2005-03-18 2008-11-18 Fujitsu Limited Variable attenuator and integrated circuit
JP2007074028A (en) * 2005-09-02 2007-03-22 Mitsubishi Electric Corp Diode switch and attenuator

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