JPS574607A - High-frequency amplifier - Google Patents

High-frequency amplifier

Info

Publication number
JPS574607A
JPS574607A JP7862280A JP7862280A JPS574607A JP S574607 A JPS574607 A JP S574607A JP 7862280 A JP7862280 A JP 7862280A JP 7862280 A JP7862280 A JP 7862280A JP S574607 A JPS574607 A JP S574607A
Authority
JP
Japan
Prior art keywords
center part
capacitor
higher harmonic
secondary higher
circuit
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
JP7862280A
Other languages
Japanese (ja)
Inventor
Hisafumi Okubo
Takeshi Takano
Megumi Arai
Yasuyuki Tokumitsu
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 JP7862280A priority Critical patent/JPS574607A/en
Publication of JPS574607A publication Critical patent/JPS574607A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only

Abstract

PURPOSE:To improve the relation between the frequency and the secondary higher harmonic distortion, by putting a capacitor into nearly a center part of a distribution constant circuit which functions as a bias supply lambda/4 line connected to the collector of a transistor or between the area near the center part and the earth. CONSTITUTION:A capacitor CP is connected to nearly a center part or to the area near the center part of a distribution circuit DCC which functions as a bias supply lambda/4 line and then earthed. Then the circuit DCC and the capacitor CP constitute a series resonance circuit to the secondary higher harmonic wave. As a result, the secondary higher harmonic wave can be lowered down to the earth without giving any effect to the band characteristics.
JP7862280A 1980-06-11 1980-06-11 High-frequency amplifier Pending JPS574607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7862280A JPS574607A (en) 1980-06-11 1980-06-11 High-frequency amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7862280A JPS574607A (en) 1980-06-11 1980-06-11 High-frequency amplifier

Publications (1)

Publication Number Publication Date
JPS574607A true JPS574607A (en) 1982-01-11

Family

ID=13666978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7862280A Pending JPS574607A (en) 1980-06-11 1980-06-11 High-frequency amplifier

Country Status (1)

Country Link
JP (1) JPS574607A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1414148A1 (en) * 2002-10-25 2004-04-28 LPA Concepts Power amplifier for radio frequency transmission systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1414148A1 (en) * 2002-10-25 2004-04-28 LPA Concepts Power amplifier for radio frequency transmission systems
FR2846489A1 (en) * 2002-10-25 2004-04-30 Lpa Concepts POWER AMPLIFIER FOR RADIO FREQUENCY TRANSMISSION SYSTEMS

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