JPS5534540A - Microwave amplifier - Google Patents

Microwave amplifier

Info

Publication number
JPS5534540A
JPS5534540A JP10668178A JP10668178A JPS5534540A JP S5534540 A JPS5534540 A JP S5534540A JP 10668178 A JP10668178 A JP 10668178A JP 10668178 A JP10668178 A JP 10668178A JP S5534540 A JPS5534540 A JP S5534540A
Authority
JP
Japan
Prior art keywords
output
gate
microwave
coupler
decreases
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
JP10668178A
Other languages
Japanese (ja)
Inventor
Takao Shima
Yasuyuki Tokumitsu
Takeshi Takano
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 JP10668178A priority Critical patent/JPS5534540A/en
Publication of JPS5534540A publication Critical patent/JPS5534540A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To realize a wide band via the feedback circuit and by using the dual gate FET to the microwave amplifier. CONSTITUTION:The microwave signal applied to input terminal IN is applied to 1st gate G1 via input/output matching circuit M1, and the amplification output is delivered to output terminal OUT via input/output matching circuit M2. Part of the microwave amplification output is drawn out by coupler 2 (using the region where the coupling amount changes monotonously) and then converted into the direct current via diode 3 to be applied to operational amplifier 5 to which the reference voltae is set up. And the output is applied to 2nd gate G2 of FET1. The output of coupler 2 decreases as the frequency increases, and the negative voltage applied to gate G2 decreases in terms of the absolute value as the frequency increases. As a result, the gain can be increased for the higher frequency band.
JP10668178A 1978-08-31 1978-08-31 Microwave amplifier Pending JPS5534540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10668178A JPS5534540A (en) 1978-08-31 1978-08-31 Microwave amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10668178A JPS5534540A (en) 1978-08-31 1978-08-31 Microwave amplifier

Publications (1)

Publication Number Publication Date
JPS5534540A true JPS5534540A (en) 1980-03-11

Family

ID=14439799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10668178A Pending JPS5534540A (en) 1978-08-31 1978-08-31 Microwave amplifier

Country Status (1)

Country Link
JP (1) JPS5534540A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4456889A (en) * 1981-06-04 1984-06-26 The United States Of America As Represented By The Secretary Of The Navy Dual-gate MESFET variable gain constant output power amplifier
JPS643208U (en) * 1987-06-19 1989-01-10

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4456889A (en) * 1981-06-04 1984-06-26 The United States Of America As Represented By The Secretary Of The Navy Dual-gate MESFET variable gain constant output power amplifier
JPS643208U (en) * 1987-06-19 1989-01-10

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