WO2002023713A3 - Direct conversion tuner - Google Patents

Direct conversion tuner Download PDF

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Publication number
WO2002023713A3
WO2002023713A3 PCT/US2001/029027 US0129027W WO0223713A3 WO 2002023713 A3 WO2002023713 A3 WO 2002023713A3 US 0129027 W US0129027 W US 0129027W WO 0223713 A3 WO0223713 A3 WO 0223713A3
Authority
WO
WIPO (PCT)
Prior art keywords
signals
direct conversion
frequency
conversion tuner
tuner
Prior art date
Application number
PCT/US2001/029027
Other languages
French (fr)
Other versions
WO2002023713A2 (en
Inventor
Erlend Olson
Original Assignee
Broadcom Corp
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 Broadcom Corp filed Critical Broadcom Corp
Priority to AU2001291038A priority Critical patent/AU2001291038A1/en
Priority to EP01971113.4A priority patent/EP1332548B1/en
Publication of WO2002023713A2 publication Critical patent/WO2002023713A2/en
Publication of WO2002023713A3 publication Critical patent/WO2002023713A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • 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
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies

Abstract

A direct conversion tuner down-converts television signals, cable signals, or other signals directly from an RF frequency to an IF frequency and/or baseband, without an intermediate up-conversion step for image rejection. The direct conversion tuner includes a pre-select filter, an amplifier, an image reject mixer, and a poly-phase filter. The pre-select filter, amplifier, and the image reject mixer can be calibrated to provide sufficient image rejection to meet the NTSC requirements for TV signals. The entire direct conversion tuner can be fabricated on a single semiconductor substrate without requiring any off-chip components. The tuner configuration described herein is not limited to processing TV signals, and can be utilized to down-convert other RF signals to an IF frequency or baseband.
PCT/US2001/029027 2000-09-18 2001-09-18 Direct conversion tuner WO2002023713A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001291038A AU2001291038A1 (en) 2000-09-18 2001-09-18 Direct conversion tuner
EP01971113.4A EP1332548B1 (en) 2000-09-18 2001-09-18 Direct conversion tuner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/665,581 2000-09-18
US09/665,581 US7050778B1 (en) 2000-09-18 2000-09-18 Direct conversion turner

Publications (2)

Publication Number Publication Date
WO2002023713A2 WO2002023713A2 (en) 2002-03-21
WO2002023713A3 true WO2002023713A3 (en) 2002-06-06

Family

ID=24670688

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/029027 WO2002023713A2 (en) 2000-09-18 2001-09-18 Direct conversion tuner

Country Status (4)

Country Link
US (3) US7050778B1 (en)
EP (1) EP1332548B1 (en)
AU (1) AU2001291038A1 (en)
WO (1) WO2002023713A2 (en)

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Also Published As

Publication number Publication date
EP1332548B1 (en) 2014-01-08
EP1332548A2 (en) 2003-08-06
AU2001291038A1 (en) 2002-03-26
US20060189290A1 (en) 2006-08-24
US7636558B2 (en) 2009-12-22
US7050778B1 (en) 2006-05-23
US8467755B2 (en) 2013-06-18
US20100093295A1 (en) 2010-04-15
WO2002023713A2 (en) 2002-03-21

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