WO2007098046A3 - Transceiver development in vhf/uhf/gsm/gps/bluetooth/cordless telephones - Google Patents

Transceiver development in vhf/uhf/gsm/gps/bluetooth/cordless telephones Download PDF

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Publication number
WO2007098046A3
WO2007098046A3 PCT/US2007/004167 US2007004167W WO2007098046A3 WO 2007098046 A3 WO2007098046 A3 WO 2007098046A3 US 2007004167 W US2007004167 W US 2007004167W WO 2007098046 A3 WO2007098046 A3 WO 2007098046A3
Authority
WO
WIPO (PCT)
Prior art keywords
vhf
uhf
gsm
gps
bluetooth
Prior art date
Application number
PCT/US2007/004167
Other languages
French (fr)
Other versions
WO2007098046A2 (en
Inventor
Guruswami Sridharan
Original Assignee
Guruswami Sridharan
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 Guruswami Sridharan filed Critical Guruswami Sridharan
Priority to EP07750965.1A priority Critical patent/EP1997231B1/en
Priority to JP2008555387A priority patent/JP5269614B2/en
Publication of WO2007098046A2 publication Critical patent/WO2007098046A2/en
Publication of WO2007098046A3 publication Critical patent/WO2007098046A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes

Abstract

A digital communication circuit (10) can be implemented can be implemented in a CMOS, or other IC structure. The digital circuit (10 can utilize negative frequency removers or image frequency removers in the digital domain. The circuit (10) can include mixers (20- 20D), switches, a complex filter, a low noise amplifier and summers (40A-40B) for digitally removing the image frequency.
PCT/US2007/004167 2006-02-17 2007-02-15 Transceiver development in vhf/uhf/gsm/gps/bluetooth/cordless telephones WO2007098046A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07750965.1A EP1997231B1 (en) 2006-02-17 2007-02-15 Transceiver development in vhf/uhf/gsm/gps/bluetooth/cordless telephones
JP2008555387A JP5269614B2 (en) 2006-02-17 2007-02-15 Development of transceivers for VHF / UHF / GSM / GPS / BLUETOOTH / cordless phones

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/357,472 US7519349B2 (en) 2006-02-17 2006-02-17 Transceiver development in VHF/UHF/GSM/GPS/bluetooth/cordless telephones
US11/357,472 2006-02-17

Publications (2)

Publication Number Publication Date
WO2007098046A2 WO2007098046A2 (en) 2007-08-30
WO2007098046A3 true WO2007098046A3 (en) 2008-10-16

Family

ID=38428872

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/004167 WO2007098046A2 (en) 2006-02-17 2007-02-15 Transceiver development in vhf/uhf/gsm/gps/bluetooth/cordless telephones

Country Status (5)

Country Link
US (2) US7519349B2 (en)
EP (1) EP1997231B1 (en)
JP (1) JP5269614B2 (en)
KR (1) KR20080095281A (en)
WO (1) WO2007098046A2 (en)

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US10225098B2 (en) 2015-01-30 2019-03-05 Cassia Networks Inc. Methods, devices and systems for supporting wireless communication
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US11265034B1 (en) * 2020-08-07 2022-03-01 Hangzhou Geo-Chip Technology Co., Ltd. Signal mixing circuit device and receiver
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Also Published As

Publication number Publication date
EP1997231A4 (en) 2012-04-04
EP1997231B1 (en) 2013-05-01
US20070197183A1 (en) 2007-08-23
EP1997231A2 (en) 2008-12-03
US20090147884A1 (en) 2009-06-11
US7979046B2 (en) 2011-07-12
KR20080095281A (en) 2008-10-28
JP5269614B2 (en) 2013-08-21
JP2009527942A (en) 2009-07-30
US7519349B2 (en) 2009-04-14
WO2007098046A2 (en) 2007-08-30

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