ZA925163B - Process for compensation of am/pm distortion of a transmitter by modulation of the local oscillator phase,and associated compensation circuit - Google Patents

Process for compensation of am/pm distortion of a transmitter by modulation of the local oscillator phase,and associated compensation circuit

Info

Publication number
ZA925163B
ZA925163B ZA925163A ZA925163A ZA925163B ZA 925163 B ZA925163 B ZA 925163B ZA 925163 A ZA925163 A ZA 925163A ZA 925163 A ZA925163 A ZA 925163A ZA 925163 B ZA925163 B ZA 925163B
Authority
ZA
South Africa
Prior art keywords
compensation
distortion
transmitter
modulation
local oscillator
Prior art date
Application number
ZA925163A
Other languages
English (en)
Inventor
Paolo Bonato
Bonato Paolo
Fabio Canzi
Canzi Fabio
Original Assignee
Sits Soc It Telecom Siemens
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 Sits Soc It Telecom Siemens filed Critical Sits Soc It Telecom Siemens
Publication of ZA925163B publication Critical patent/ZA925163B/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/02—Details
    • H03C1/04—Means in or combined with modulating stage for reducing angle modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
ZA925163A 1991-07-11 1992-07-10 Process for compensation of am/pm distortion of a transmitter by modulation of the local oscillator phase,and associated compensation circuit ZA925163B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI911927A IT1251082B (it) 1991-07-11 1991-07-11 Procedimento per la compensazione della distorsione am/pm di un trasmettitore tramite modulazuone della fase dell'oscillazione tlocale, e relativo circuito di compemsazione.

Publications (1)

Publication Number Publication Date
ZA925163B true ZA925163B (en) 1993-03-31

Family

ID=11360331

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA925163A ZA925163B (en) 1991-07-11 1992-07-10 Process for compensation of am/pm distortion of a transmitter by modulation of the local oscillator phase,and associated compensation circuit

Country Status (6)

Country Link
EP (1) EP0522525A1 (fi)
AU (1) AU1960792A (fi)
FI (1) FI923191A (fi)
IT (1) IT1251082B (fi)
NO (1) NO922751L (fi)
ZA (1) ZA925163B (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4105554A1 (de) * 1991-02-22 1992-08-27 Bayer Ag Verfahren zur herstellung von dialkylcarbonaten
US6101224A (en) * 1998-10-07 2000-08-08 Telefonaktiebolaget Lm Ericsson Method and apparatus for generating a linearly modulated signal using polar modulation
US7126999B2 (en) 2003-08-11 2006-10-24 Telefonaktiebolaget Lm Ericsson (Publ) Pseudo-polar modulation for radio transmitters
JP2007521700A (ja) * 2003-10-20 2007-08-02 トムソン ライセンシング 無線送信機に使用するための前置補償器
RU2568931C1 (ru) * 2014-11-05 2015-11-20 Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "Военный учебно-научный центр Военно-воздушных сил "Военно-воздушная академия имени профессора Н.Е. Жуковского и Ю.А. Гагарина" (г. Воронеж) Министерства обороны Российской Федерации Способ амплитудно-фазовой модуляции высокочастотного сигнала и устройство его реализации
WO2023126054A1 (en) * 2021-12-28 2023-07-06 Telefonaktiebolaget Lm Ericsson (Publ) Digital phase locked loop amplitude modulation-to-phase modulation (am-pm) compensation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55118212A (en) * 1979-03-06 1980-09-11 Nec Corp Demodulation circuit
DE3033288A1 (de) * 1980-09-04 1982-04-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur breitbandigen linearisierung von mikrowellenverstaerkern

Also Published As

Publication number Publication date
FI923191A0 (fi) 1992-07-10
IT1251082B (it) 1995-05-04
NO922751L (no) 1993-01-12
NO922751D0 (no) 1992-07-10
AU1960792A (en) 1993-01-14
EP0522525A1 (en) 1993-01-13
FI923191A (fi) 1993-01-12
ITMI911927A1 (it) 1993-01-12
ITMI911927A0 (it) 1991-07-11

Similar Documents

Publication Publication Date Title
AU2732392A (en) Frequency synthesis using frequency controlled carrier modulated with pll feedback signal
AU9176691A (en) Adaptive phase lock loop
AU616611B2 (en) Compensated phase locked loop circuit
EP0795234A4 (en) PHASE CONTROL CIRCUIT WITH PILOT FREQUENCY
SG52884A1 (en) An adaptive phase locked loop
EP0515074A3 (en) Frequency controlled oscillator for high frequency phase-locked loop
HK132296A (en) Digital radio frequency compensation
GB2257331B (en) Power control circuitry for a TDMA radio frequency transmitter
DE3170262D1 (en) Phase-locked loop frequency synthesizer including compensated phase and frequency modulation
GB2274033B (en) Voltage-controlled oscillation circuit
AU537712B2 (en) Frequency synthesizer with phase locked loop
AU560644B2 (en) Frequency modulation in a phase locked loop
GB9323786D0 (en) System for determining the acquisition of,and frequency compensating,a phase modulated pseudonouse sequence signal
HK1014093A1 (en) Ring oscillator with frequency control loop.
GB9320069D0 (en) Frequency tuning for a phase locked loop
EP0340014A3 (en) Adaptive multiharmonic phase jitter compensation
EP0644658A3 (en) Frequency synthesis circuit at PLL.
GB2214012B (en) Frequency or phase modulation
ZA8410142B (en) Multiple frequency digital phase locked loop
ZA925163B (en) Process for compensation of am/pm distortion of a transmitter by modulation of the local oscillator phase,and associated compensation circuit
DE69102642D1 (de) Regelschleife zur kompensation der eigenfrequenzphasenverschiebung.
GB2247368B (en) Phase modulation signal generator
KR0137399B1 (en) Phase locked loop circuit
NO910481D0 (no) Frekvenslineariseringskrets for en mikroboelgespenningsstyrt oscillator i kamboelgeleder.
GB2254207B (en) Zero phase restart compensation for VCO