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WO2003036789A3 - Radio frequency amplifier - Google Patents

Radio frequency amplifier Download PDF

Info

Publication number
WO2003036789A3
WO2003036789A3 PCT/GB2002/004827 GB0204827W WO03036789A3 WO 2003036789 A3 WO2003036789 A3 WO 2003036789A3 GB 0204827 W GB0204827 W GB 0204827W WO 03036789 A3 WO03036789 A3 WO 03036789A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
modulated
carrier
generate
output
Prior art date
Application number
PCT/GB2002/004827
Other languages
French (fr)
Other versions
WO2003036789A2 (en
Inventor
Simon Tonks
Original Assignee
Pa Consulting Services
Simon Tonks
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 Pa Consulting Services, Simon Tonks filed Critical Pa Consulting Services
Priority to AU2002341138A priority Critical patent/AU2002341138A1/en
Publication of WO2003036789A2 publication Critical patent/WO2003036789A2/en
Publication of WO2003036789A3 publication Critical patent/WO2003036789A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated

Landscapes

  • Amplitude Modulation (AREA)
  • Amplifiers (AREA)

Abstract

An amplifying circuit for generating a radio frequency modulated output signal carrying an amplitude-modulated signal, the amplifying circuit including: a first modulator for accepting a first I/Q component signal Il,Q1 and a carrier signal, and modulating the first I/Q component signal with the carrier signal to generate a first modulated signal; a first amplifier for amplifying the first modulated signal; a second modulator for accepting a second I/Q component signal I2,Q2 and the carrier, and modulating the second I/Q component signal with the carrier signal to generate a second modulated signal; a second amplifier for amplifying the second modulated signal; output combining circuitry for combining the amplified first and second modulated signals, thereby to generate the output signal; and phase changing means for selectively altering relative phases of the first and second modulated signals prior to being combined, such that the output signal is phase modulated in accordance with a data signal to be transmitted and amplitude modulated on the basis of a desired transmission power.
PCT/GB2002/004827 2001-10-26 2002-10-25 Radio frequency amplifier WO2003036789A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002341138A AU2002341138A1 (en) 2001-10-26 2002-10-25 Radio frequency amplifier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0125788.0 2001-10-26
GB0125788A GB0125788D0 (en) 2001-10-26 2001-10-26 Radio frequency amplifier

Publications (2)

Publication Number Publication Date
WO2003036789A2 WO2003036789A2 (en) 2003-05-01
WO2003036789A3 true WO2003036789A3 (en) 2003-09-18

Family

ID=9924625

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/004827 WO2003036789A2 (en) 2001-10-26 2002-10-25 Radio frequency amplifier

Country Status (3)

Country Link
AU (1) AU2002341138A1 (en)
GB (1) GB0125788D0 (en)
WO (1) WO2003036789A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135844A (en) * 1983-02-21 1984-09-05 Nippon Telegraph & Telephone Oscillator with variable frequency and phase
EP0763885A2 (en) * 1995-09-13 1997-03-19 Fujitsu Limited Modulator and frequency multiplier for use therein
US5861781A (en) * 1997-09-16 1999-01-19 Lucent Technologies Inc. Single sideband double quadrature modulator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135844A (en) * 1983-02-21 1984-09-05 Nippon Telegraph & Telephone Oscillator with variable frequency and phase
EP0763885A2 (en) * 1995-09-13 1997-03-19 Fujitsu Limited Modulator and frequency multiplier for use therein
US5861781A (en) * 1997-09-16 1999-01-19 Lucent Technologies Inc. Single sideband double quadrature modulator

Also Published As

Publication number Publication date
GB0125788D0 (en) 2001-12-19
AU2002341138A1 (en) 2003-05-06
WO2003036789A2 (en) 2003-05-01

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