GB1246209A - Improvements in or relating to high frequency power amplifying arrangements - Google Patents

Improvements in or relating to high frequency power amplifying arrangements

Info

Publication number
GB1246209A
GB1246209A GB2582669A GB2582669A GB1246209A GB 1246209 A GB1246209 A GB 1246209A GB 2582669 A GB2582669 A GB 2582669A GB 2582669 A GB2582669 A GB 2582669A GB 1246209 A GB1246209 A GB 1246209A
Authority
GB
United Kingdom
Prior art keywords
phase
output
input
attenuator
voltage controllable
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.)
Expired
Application number
GB2582669A
Inventor
Bernard David Bradshaw
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB2582669A priority Critical patent/GB1246209A/en
Priority to NL7003820A priority patent/NL7003820A/xx
Priority to DE19702015812 priority patent/DE2015812A1/en
Priority to FR7018565A priority patent/FR2048646A5/fr
Publication of GB1246209A publication Critical patent/GB1246209A/en
Expired 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
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/22—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with tubes only

Landscapes

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

Abstract

1,246,209. Amplifiers; automatic phase Control. MARCONI CO. Ltd. 26 Nov., 1969 [21 May, 1969], No. 25826/69. Headings H3A and H3W. Phase distortion in a high frequency power amplifier is reduced by applying signals derived from the input and output to a phase discriminator, the output of which controls a voltage controllable phase shifter connected in the input path of the amplifier. Power amplifier 5 is fed via hybrid power splitter 1, a switched attenuator 2, voltage controllable attenuator 3 and voltage controllable phase-shifter 4. Its output is taken sampling circuit 6, the output of which is taken via attenuator 7 and low-pass filter 8, eliminating harmonics of the signal frequency, to one input of a phase quadrature detector 10. The second input to phase quadrature detector 10 is derived from hybrid power splitter 1 via a delay circuit 11 giving the same delay as that over the path through power amplifier 1: its output controls phase-shifter 4. In addition amplitude distortion is reduced by applying the outputs from low-pass filter 8 and the hybrid power splitter 1 to an envelope detector 9 which detects any difference in amplitude and applies a correcting voltage to voltage controllable attenuator 3. The arrangement is more particularly intended for single and independent side band transmitters.
GB2582669A 1969-05-21 1969-05-21 Improvements in or relating to high frequency power amplifying arrangements Expired GB1246209A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2582669A GB1246209A (en) 1969-05-21 1969-05-21 Improvements in or relating to high frequency power amplifying arrangements
NL7003820A NL7003820A (en) 1969-05-21 1970-03-18
DE19702015812 DE2015812A1 (en) 1969-05-21 1970-04-02 High frequency power amplifier
FR7018565A FR2048646A5 (en) 1969-05-21 1970-05-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2582669A GB1246209A (en) 1969-05-21 1969-05-21 Improvements in or relating to high frequency power amplifying arrangements

Publications (1)

Publication Number Publication Date
GB1246209A true GB1246209A (en) 1971-09-15

Family

ID=10233965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2582669A Expired GB1246209A (en) 1969-05-21 1969-05-21 Improvements in or relating to high frequency power amplifying arrangements

Country Status (4)

Country Link
DE (1) DE2015812A1 (en)
FR (1) FR2048646A5 (en)
GB (1) GB1246209A (en)
NL (1) NL7003820A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291277A (en) * 1979-05-16 1981-09-22 Harris Corporation Adaptive predistortion technique for linearizing a power amplifier for digital data systems
GB2163311A (en) * 1984-08-17 1986-02-19 Philips Electronic Associated Bipolar transistor rf power amplifier
GB2164823A (en) * 1984-09-17 1986-03-26 Philips Electronic Associated Television transmitter
US4591800A (en) * 1984-10-01 1986-05-27 Motorola, Inc. Linear power amplifier feedback improvement
WO1991006149A1 (en) * 1989-10-16 1991-05-02 Motorola, Inc. Stabilizing circuit for feedback rf amplifier
GB2239755A (en) * 1989-12-26 1991-07-10 Mitsubishi Electric Corp Compensation for non-linear effects on phase and amplitude in amplifier
GB2241622A (en) * 1990-02-08 1991-09-04 Marconi Gec Ltd Reducing distortion in r.f.power amplifiers
US5066922A (en) * 1989-10-16 1991-11-19 Motorola, Inc. Stabilizing circuit for feedback RF amplifier
GB2244881A (en) * 1990-04-25 1991-12-11 Nat Res Dev Reducing distortion in amplification by amplitude and phase control
US5124665A (en) * 1990-02-08 1992-06-23 The Marconi Company Limited Circuit for reducing distortion produced by an r.f. power amplifier
JPH06503393A (en) * 1990-12-12 1994-04-14 シーメンス アクチエンゲゼルシヤフト fuel injector end cap
US5334946A (en) * 1990-04-25 1994-08-02 British Technology Group Limited Apparatus and method for reducing distortion in amplification
GB2280800A (en) * 1993-07-16 1995-02-08 Plessey Semiconductors Ltd Equalisation arrangement
US5900778A (en) * 1997-05-08 1999-05-04 Stonick; John T. Adaptive parametric signal predistorter for compensation of time varying linear and nonlinear amplifier distortion

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0248425B1 (en) * 1986-06-06 1991-08-07 Telefunken Systemtechnik Gmbh Emitter with a transistorized push-pull output stage
US5175879A (en) * 1991-04-25 1992-12-29 Motorola, Inc. Linear amplifier with feedback path and phase error compensation

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291277A (en) * 1979-05-16 1981-09-22 Harris Corporation Adaptive predistortion technique for linearizing a power amplifier for digital data systems
GB2163311A (en) * 1984-08-17 1986-02-19 Philips Electronic Associated Bipolar transistor rf power amplifier
GB2164823A (en) * 1984-09-17 1986-03-26 Philips Electronic Associated Television transmitter
US4591800A (en) * 1984-10-01 1986-05-27 Motorola, Inc. Linear power amplifier feedback improvement
WO1991006149A1 (en) * 1989-10-16 1991-05-02 Motorola, Inc. Stabilizing circuit for feedback rf amplifier
US5066922A (en) * 1989-10-16 1991-11-19 Motorola, Inc. Stabilizing circuit for feedback RF amplifier
US5101172A (en) * 1989-12-26 1992-03-31 Mitsubishi Denki Kabushiki Kaisha Linear amplifier
GB2239755A (en) * 1989-12-26 1991-07-10 Mitsubishi Electric Corp Compensation for non-linear effects on phase and amplitude in amplifier
GB2239755B (en) * 1989-12-26 1994-08-24 Mitsubishi Electric Corp Linear amplifier
US5121077A (en) * 1990-02-08 1992-06-09 The Marconi Company Limted Circuit for reducing distortion produced by an r.f. power amplifier
US5124665A (en) * 1990-02-08 1992-06-23 The Marconi Company Limited Circuit for reducing distortion produced by an r.f. power amplifier
GB2241622B (en) * 1990-02-08 1994-07-13 Marconi Gec Ltd Circuit for reducing distortion produced by an r.f. power amplifier
GB2241622A (en) * 1990-02-08 1991-09-04 Marconi Gec Ltd Reducing distortion in r.f.power amplifiers
GB2244881A (en) * 1990-04-25 1991-12-11 Nat Res Dev Reducing distortion in amplification by amplitude and phase control
US5157345A (en) * 1990-04-25 1992-10-20 National Research Development Corporation Apparatus and method for reducing distortion in amplification
GB2244881B (en) * 1990-04-25 1993-05-05 Nat Res Dev Apparatus and method for reducing distortion in amplification
US5334946A (en) * 1990-04-25 1994-08-02 British Technology Group Limited Apparatus and method for reducing distortion in amplification
JPH06503393A (en) * 1990-12-12 1994-04-14 シーメンス アクチエンゲゼルシヤフト fuel injector end cap
GB2280800A (en) * 1993-07-16 1995-02-08 Plessey Semiconductors Ltd Equalisation arrangement
US5557640A (en) * 1993-07-16 1996-09-17 Plessey Semiconductor Limited Phase and amplitude equalization arrangement
GB2280800B (en) * 1993-07-16 1997-11-12 Plessey Semiconductors Ltd Equalisation arrangement
US5900778A (en) * 1997-05-08 1999-05-04 Stonick; John T. Adaptive parametric signal predistorter for compensation of time varying linear and nonlinear amplifier distortion

Also Published As

Publication number Publication date
FR2048646A5 (en) 1971-03-19
DE2015812A1 (en) 1971-04-08
NL7003820A (en) 1970-11-24

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