WO2002089313A3 - Multiple frequency converter using digital mixers - Google Patents

Multiple frequency converter using digital mixers Download PDF

Info

Publication number
WO2002089313A3
WO2002089313A3 PCT/GB2002/001973 GB0201973W WO02089313A3 WO 2002089313 A3 WO2002089313 A3 WO 2002089313A3 GB 0201973 W GB0201973 W GB 0201973W WO 02089313 A3 WO02089313 A3 WO 02089313A3
Authority
WO
WIPO (PCT)
Prior art keywords
input signal
mixers
frequency
dsp
amplifier
Prior art date
Application number
PCT/GB2002/001973
Other languages
French (fr)
Other versions
WO2002089313A2 (en
Inventor
Peter Kenington
Mark Cope
Steven Meade
Mark Robertson
Original Assignee
Andrew Corp
Peter Kenington
Mark Cope
Steven Meade
Mark Robertson
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 Andrew Corp, Peter Kenington, Mark Cope, Steven Meade, Mark Robertson filed Critical Andrew Corp
Priority to DE10296731T priority Critical patent/DE10296731T5/en
Priority to AU2002249472A priority patent/AU2002249472A1/en
Publication of WO2002089313A2 publication Critical patent/WO2002089313A2/en
Publication of WO2002089313A3 publication Critical patent/WO2002089313A3/en

Links

Classifications

    • 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
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

When using a DSP to digitally predistort the RF input to a power amplifier, it is necessary to downconvert the frequency the of the input signal to enable it to be processed by the DSP. The predistored amplifier input signal produced by the DSP is then upconverted to its original frequency and supplied to the power amplifier. The downconverter and the upconverter processes each comprise a number of mixers that operate in series upon the amplifier input signal. Each of the mixers mixes a respective reference signal into the amplifier input signal to change the latter's frequency. All of the reference signals are derived from the same reference oscillator. If the total number of mixers that perform high-sided mixing is constrained to be even, then frequency errors associated with the downconversion and subsequent upconversion are eliminated.
PCT/GB2002/001973 2001-04-30 2002-04-30 Multiple frequency converter using digital mixers WO2002089313A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10296731T DE10296731T5 (en) 2001-04-30 2002-04-30 Frequency conversion of signals
AU2002249472A AU2002249472A1 (en) 2001-04-30 2002-04-30 Multiple frequency converter using digital mixers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0110561.8 2001-04-30
GB0110561A GB2375246B (en) 2001-04-30 2001-04-30 Frequency conversion of signals

Publications (2)

Publication Number Publication Date
WO2002089313A2 WO2002089313A2 (en) 2002-11-07
WO2002089313A3 true WO2002089313A3 (en) 2003-08-07

Family

ID=9913744

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/001973 WO2002089313A2 (en) 2001-04-30 2002-04-30 Multiple frequency converter using digital mixers

Country Status (4)

Country Link
AU (1) AU2002249472A1 (en)
DE (1) DE10296731T5 (en)
GB (1) GB2375246B (en)
WO (1) WO2002089313A2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0632577A1 (en) * 1993-07-02 1995-01-04 Ford Motor Company Multi-stage digital RF translator
EP0651526A2 (en) * 1993-10-30 1995-05-03 Robert Bosch Gmbh Method for processing a digital frequencymultiplex signal
WO1998026576A2 (en) * 1996-12-10 1998-06-18 Intel Corporation Catv apparatus for tuning channels
EP1001523A1 (en) * 1998-11-16 2000-05-17 Robert Bosch Gmbh Apparatus for frequency synchronisation in a communication system
DE19940277A1 (en) * 1999-08-26 2001-03-08 Bosch Gmbh Robert Method for signal conversion of a modulated real-value analog image signal and associated signal conversion

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580289A (en) * 1981-12-30 1986-04-01 Motorola, Inc. Fully integratable superheterodyne radio receiver utilizing tunable filters
GB9115350D0 (en) * 1991-07-16 1991-08-28 Navstar Ltd A radio receiver
US5220688A (en) * 1991-07-18 1993-06-15 Industrial Technology Research Institute Frequency translating circuit with multiple stages using common local oscillator
EP0555689A3 (en) * 1992-02-11 1993-10-20 Thomson Consumer Electronics Arrangement for downconverting microwave signals
WO1997008857A1 (en) * 1995-08-24 1997-03-06 British Telecommunications Public Limited Company Burst mode optical digital receiver and repeater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0632577A1 (en) * 1993-07-02 1995-01-04 Ford Motor Company Multi-stage digital RF translator
EP0651526A2 (en) * 1993-10-30 1995-05-03 Robert Bosch Gmbh Method for processing a digital frequencymultiplex signal
WO1998026576A2 (en) * 1996-12-10 1998-06-18 Intel Corporation Catv apparatus for tuning channels
EP1001523A1 (en) * 1998-11-16 2000-05-17 Robert Bosch Gmbh Apparatus for frequency synchronisation in a communication system
DE19940277A1 (en) * 1999-08-26 2001-03-08 Bosch Gmbh Robert Method for signal conversion of a modulated real-value analog image signal and associated signal conversion

Also Published As

Publication number Publication date
GB2375246B (en) 2005-01-05
GB0110561D0 (en) 2001-06-20
AU2002249472A1 (en) 2002-11-11
WO2002089313A2 (en) 2002-11-07
DE10296731T5 (en) 2004-04-29
GB2375246A (en) 2002-11-06

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