JPS5573115A - Traveling wave tube amplifying device - Google Patents

Traveling wave tube amplifying device

Info

Publication number
JPS5573115A
JPS5573115A JP14618578A JP14618578A JPS5573115A JP S5573115 A JPS5573115 A JP S5573115A JP 14618578 A JP14618578 A JP 14618578A JP 14618578 A JP14618578 A JP 14618578A JP S5573115 A JPS5573115 A JP S5573115A
Authority
JP
Japan
Prior art keywords
higher harmonic
amplifier
feedback
secure
traveling wave
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
JP14618578A
Other languages
Japanese (ja)
Inventor
Yoshio Yuasa
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 JP14618578A priority Critical patent/JPS5573115A/en
Publication of JPS5573115A publication Critical patent/JPS5573115A/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
    • H03F3/54—Amplifiers using transit-time effect in tubes or semiconductor devices
    • H03F3/56—Amplifiers using transit-time effect in tubes or semiconductor devices using klystrons

Landscapes

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

Abstract

PURPOSE:To prevent the lowering of the signal quality as well as to secure the wide-band characteristics by fetching in separation the 2nd higher harmonic from the output of the traveling wave tube and then giving the feedback to the higher harmonic via the external feedback circuit composed of the phase shifter and the attenuator. CONSTITUTION:The input signal of angular frequency omega is amplified via pre-amplifier 1 featuring the linear action and then compounded with the feedback higher harmonic of angular frequency 2omega via branching filter 2 to be supplied to traveling wave tube amplifier 5. Amplifier 5 operates at the level near the saturation in order to obtain a high efficiency and cobtains a sufficient amount of the 2nd higher harmonic, and the 2nd higher harmonic only is fetched out of the output via filter 2 to be led to the external feedback circuit. And the basic signal wave of angular frequency omega is eliminated through HPF6, and the control is given through phase shifter 3 in order to secure the 180 deg.-shifted pahse from the 2nd higher harmonic generated inside amplifier 5. Then the attenuation quantity is controlled through attenuator 4 to secure the coincidence with the gain to the 2nd higher harmonic of amplifier 5. Accordingly, the feedback higher harmonic is increased as the 2nd higher harmonic delivered increases to secure the reduction, thus forming a steady feedback loop. Furthermore, the wide-band characteristics can be secured since the feedback circuit is formed with the passive element.
JP14618578A 1978-11-27 1978-11-27 Traveling wave tube amplifying device Pending JPS5573115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14618578A JPS5573115A (en) 1978-11-27 1978-11-27 Traveling wave tube amplifying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14618578A JPS5573115A (en) 1978-11-27 1978-11-27 Traveling wave tube amplifying device

Publications (1)

Publication Number Publication Date
JPS5573115A true JPS5573115A (en) 1980-06-02

Family

ID=15402051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14618578A Pending JPS5573115A (en) 1978-11-27 1978-11-27 Traveling wave tube amplifying device

Country Status (1)

Country Link
JP (1) JPS5573115A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62206905A (en) * 1986-03-06 1987-09-11 Nec Corp Nonlinear distortion compensation circuit for power amplifier
JPS62272824A (en) * 1986-05-15 1987-11-27 アセア　ブラウン　ボヴエリ　アクチエンゲゼルシヤフト Method of attenuating electric overtone
JP2005223849A (en) * 2004-02-09 2005-08-18 Sony Ericsson Mobilecommunications Japan Inc Distortion compensation apparatus and power amplifier with distortion compensation function
JP2005318373A (en) * 2004-04-30 2005-11-10 Sony Ericsson Mobilecommunications Japan Inc Distortion compensating power amplifying device
JP2016076752A (en) * 2014-10-02 2016-05-12 株式会社Ｗａｖｅ Ｔｅｃｈｎｏｌｏｇｙ Pushpull power amplifier
WO2019146550A1 (en) * 2018-01-23 2019-08-01 株式会社村田製作所 Power amplification circuit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62206905A (en) * 1986-03-06 1987-09-11 Nec Corp Nonlinear distortion compensation circuit for power amplifier
JPS62272824A (en) * 1986-05-15 1987-11-27 アセア　ブラウン　ボヴエリ　アクチエンゲゼルシヤフト Method of attenuating electric overtone
JP2005223849A (en) * 2004-02-09 2005-08-18 Sony Ericsson Mobilecommunications Japan Inc Distortion compensation apparatus and power amplifier with distortion compensation function
JP2005318373A (en) * 2004-04-30 2005-11-10 Sony Ericsson Mobilecommunications Japan Inc Distortion compensating power amplifying device
JP2016076752A (en) * 2014-10-02 2016-05-12 株式会社Ｗａｖｅ Ｔｅｃｈｎｏｌｏｇｙ Pushpull power amplifier
WO2019146550A1 (en) * 2018-01-23 2019-08-01 株式会社村田製作所 Power amplification circuit
CN111615787A (en) * 2018-01-23 2020-09-01 株式会社村田制作所 Power amplifying circuit
US11418151B2 (en) * 2018-01-23 2022-08-16 Murata Manufacturing Co., Ltd. Power amplifier circuit
CN111615787B (en) * 2018-01-23 2023-08-11 株式会社村田制作所 power amplifier circuit

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