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JPS5737909A - Wide band electric power amplifier - Google Patents

Wide band electric power amplifier

Info

Publication number
JPS5737909A
JPS5737909A JP11267180A JP11267180A JPS5737909A JP S5737909 A JPS5737909 A JP S5737909A JP 11267180 A JP11267180 A JP 11267180A JP 11267180 A JP11267180 A JP 11267180A JP S5737909 A JPS5737909 A JP S5737909A
Authority
JP
Japan
Prior art keywords
circuit
output
nonlinear
electric power
power amplifier
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
JP11267180A
Other languages
Japanese (ja)
Other versions
JPS6358406B2 (en
Inventor
Gunkichi Sato
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP11267180A priority Critical patent/JPS5737909A/en
Publication of JPS5737909A publication Critical patent/JPS5737909A/en
Publication of JPS6358406B2 publication Critical patent/JPS6358406B2/ja
Granted 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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To prevent the lowering of compensation effect, by carrying out a comparison of the frequency spectrum distribution between the input and output signals within the amplifying band of an electric power amplifier including a nonlinear compensating circuit and then giving an automatic adjustment to the nonlinear properties of the nonlinear compensating circuit so as to reduce the undesired spectrum contained in the output signal. CONSTITUTION:A series circuit of a branching device 2, a nonlinear compensating circuit 3, an amplifier 4 for electric power to be comensated and a branching device 5 respectively is installed between an input terminal 1 and an output terminal 6. Then a part of the output of the device 2 is applied to a nonlinear distortion detecting circuit 7, and at the same time the output of the device 5 is branched and supplied to the circuit 7 via an input terminal 12. Furthermore a control circuit 8 is connected to the output side of the circuit 7, and an output 22 of the circuit 8 is applied to the circuit 3. In such constitution, the frequency spectrum distributions of both the input and output signals are detected through the circuit 7, and then compared with each other through the circuit 8. Then the nonlinear properties of the circuit 3 is adjusted to minimize the undesired spectrum contained in the output signal.
JP11267180A 1980-08-18 1980-08-18 Wide band electric power amplifier Granted JPS5737909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11267180A JPS5737909A (en) 1980-08-18 1980-08-18 Wide band electric power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11267180A JPS5737909A (en) 1980-08-18 1980-08-18 Wide band electric power amplifier

Publications (2)

Publication Number Publication Date
JPS5737909A true JPS5737909A (en) 1982-03-02
JPS6358406B2 JPS6358406B2 (en) 1988-11-15

Family

ID=14592561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11267180A Granted JPS5737909A (en) 1980-08-18 1980-08-18 Wide band electric power amplifier

Country Status (1)

Country Link
JP (1) JPS5737909A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5983264A (en) * 1982-11-05 1984-05-14 Nippon Signal Co Ltd:The Destination guide device
FR2540309A1 (en) * 1983-01-28 1984-08-03 Thomson Csf Linearisation device for a high-frequency amplifier with amplitude non-linearity
JPH01274507A (en) * 1988-04-27 1989-11-02 Nec Corp Distortion compensation circuit
JPH07500437A (en) * 1991-10-24 1995-01-12 インテル　コーポレイシヨン data processing system
JPH08256018A (en) * 1995-03-16 1996-10-01 Nec Corp Power consumption control circuit for high-frequency linear amplifier
EP0847134A1 (en) * 1996-12-05 1998-06-10 Robert Bosch Gmbh Amplifier linearizing circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5983264A (en) * 1982-11-05 1984-05-14 Nippon Signal Co Ltd:The Destination guide device
FR2540309A1 (en) * 1983-01-28 1984-08-03 Thomson Csf Linearisation device for a high-frequency amplifier with amplitude non-linearity
JPH01274507A (en) * 1988-04-27 1989-11-02 Nec Corp Distortion compensation circuit
JPH07500437A (en) * 1991-10-24 1995-01-12 インテル　コーポレイシヨン data processing system
JPH08256018A (en) * 1995-03-16 1996-10-01 Nec Corp Power consumption control circuit for high-frequency linear amplifier
EP0847134A1 (en) * 1996-12-05 1998-06-10 Robert Bosch Gmbh Amplifier linearizing circuit

Also Published As

Publication number Publication date
JPS6358406B2 (en) 1988-11-15

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