WO2001067592A3 - Direct conversion up-converter for broadband wireless access equipment - Google Patents

Direct conversion up-converter for broadband wireless access equipment Download PDF

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Publication number
WO2001067592A3
WO2001067592A3 PCT/US2001/040268 US0140268W WO0167592A3 WO 2001067592 A3 WO2001067592 A3 WO 2001067592A3 US 0140268 W US0140268 W US 0140268W WO 0167592 A3 WO0167592 A3 WO 0167592A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
modulated
frequency
conversion
direct
Prior art date
Application number
PCT/US2001/040268
Other languages
French (fr)
Other versions
WO2001067592A2 (en
Inventor
Erol Kenneth Yurtkuran
Jeffrey Tony Masters
David Scott Bennett
Original Assignee
Spike Broadband Systems Inc
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 Spike Broadband Systems Inc filed Critical Spike Broadband Systems Inc
Priority to AU2001253843A priority Critical patent/AU2001253843A1/en
Publication of WO2001067592A2 publication Critical patent/WO2001067592A2/en
Publication of WO2001067592A3 publication Critical patent/WO2001067592A3/en

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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
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages

Abstract

A direct conversion up-converter provides direct up-conversion of a modulated broadband intermediate frequency ('IF') signal, which is on the order of 5 to 50 MHz, to a modulated radio frequency ('RF') signal, which is on the order of 70 MHz to 60 GHz. The direct up-conversion does not use super-heterodyne mixing. The direct conversion up-converter includes a demodulator unit to demodulate the modulated IF signal into a real baseband signal component ('I') and an imaginary baseband signal component ('Q'). Each basedband signal component I and Q is then amplified and passed through a bandpass filter to remove high frequency noise. The filtered baseband signal I and Q are then modulated by a modulator unit into a modulated RF signal. The demodulator unit performs the demodulation with an oscillation frequency corresponding to the modulation frequency of the modulated IF signal. The modulator unit performs the modulation with a second oscillator frequency which corresponds to a desired modulation frequency of the modulated RF signal. The demodulator unit and the modulator unit are formed from a plurality of integrated circuits disposed on a signal circuit board.
PCT/US2001/040268 2000-03-08 2001-03-08 Direct conversion up-converter for broadband wireless access equipment WO2001067592A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001253843A AU2001253843A1 (en) 2000-03-08 2001-03-08 Direct conversion up-converter for broadband wireless access equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52146600A 2000-03-08 2000-03-08
US09/521,466 2000-03-08

Publications (2)

Publication Number Publication Date
WO2001067592A2 WO2001067592A2 (en) 2001-09-13
WO2001067592A3 true WO2001067592A3 (en) 2003-05-15

Family

ID=24076844

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/040268 WO2001067592A2 (en) 2000-03-08 2001-03-08 Direct conversion up-converter for broadband wireless access equipment

Country Status (2)

Country Link
AU (1) AU2001253843A1 (en)
WO (1) WO2001067592A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6934341B2 (en) * 2000-08-29 2005-08-23 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for plurality signal generation
DE102007055529A1 (en) 2007-08-06 2009-02-12 Rhode & Schwarz Gmbh & Co. Kg Method and arrangement for generating a frequency-modulated signal
EP2048775A1 (en) * 2007-10-10 2009-04-15 Semiconductors Ideas to the Market (ITOM) B.V. Anti jamming system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140169A1 (en) * 1983-09-30 1985-05-08 International Standard Electric Corporation Zero IF frequency modulator
GB2240890A (en) * 1990-02-08 1991-08-14 Marconi Gec Ltd Phase shifting circuit
US5946048A (en) * 1997-03-12 1999-08-31 Hybrid Networks, Inc. Network device for handling digital data over a TV channel
US6016422A (en) * 1997-10-31 2000-01-18 Motorola, Inc. Method of and apparatus for generating radio frequency quadrature LO signals for direct conversion transceivers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140169A1 (en) * 1983-09-30 1985-05-08 International Standard Electric Corporation Zero IF frequency modulator
GB2240890A (en) * 1990-02-08 1991-08-14 Marconi Gec Ltd Phase shifting circuit
US5946048A (en) * 1997-03-12 1999-08-31 Hybrid Networks, Inc. Network device for handling digital data over a TV channel
US6016422A (en) * 1997-10-31 2000-01-18 Motorola, Inc. Method of and apparatus for generating radio frequency quadrature LO signals for direct conversion transceivers

Also Published As

Publication number Publication date
WO2001067592A2 (en) 2001-09-13
AU2001253843A1 (en) 2001-09-17

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