CA2305134A1 - Down/up-conversion apparatus and method - Google Patents

Down/up-conversion apparatus and method Download PDF

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Publication number
CA2305134A1
CA2305134A1 CA002305134A CA2305134A CA2305134A1 CA 2305134 A1 CA2305134 A1 CA 2305134A1 CA 002305134 A CA002305134 A CA 002305134A CA 2305134 A CA2305134 A CA 2305134A CA 2305134 A1 CA2305134 A1 CA 2305134A1
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CA
Canada
Prior art keywords
signal
component
mixes
phase component
mixer
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002305134A
Other languages
French (fr)
Other versions
CA2305134C (en
Inventor
Thorsten Schier
Svante Signell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unwired Planet LLC
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Individual
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 Individual filed Critical Individual
Publication of CA2305134A1 publication Critical patent/CA2305134A1/en
Application granted granted Critical
Publication of CA2305134C publication Critical patent/CA2305134C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H03D1/24—Homodyne or synchrodyne circuits for demodulation of signals wherein one sideband or the carrier has been wholly or partially suppressed
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0054—Digital filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0066—Mixing
    • H03D2200/0072—Mixing by complex multiplication
    • 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
    • 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

Abstract

A down-converter converts an amplitude modulated high frequency signal into a low frequency or baseband signal. A first mixer (30, 32) mixes the high frequency signal into a composite signal having an in-phase component and a quadrature component. A complex bandpass filter (34) bandwith limits the composite signal into a bandwidth limited signal with an in-phase component and a quadrature component. A second mixer (36, 38) mixes the bandwidth limited signal into an intermediate signal with an in-phase component and a quadrature component, and an adder (40) adds one component of the intermediate signal to the other. A similar up-conventer performs the reverse process.
CA002305134A 1997-10-03 1998-09-28 Down/up-conversion apparatus and method Expired - Lifetime CA2305134C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9703617A SE514795C2 (en) 1997-10-03 1997-10-03 Device and method for up and down conversion
SE9703617-2 1997-10-03
PCT/SE1998/001726 WO1999018657A2 (en) 1997-10-03 1998-09-28 Down/up-conversion apparatus and method

Publications (2)

Publication Number Publication Date
CA2305134A1 true CA2305134A1 (en) 1999-04-15
CA2305134C CA2305134C (en) 2005-01-25

Family

ID=20408503

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002305134A Expired - Lifetime CA2305134C (en) 1997-10-03 1998-09-28 Down/up-conversion apparatus and method

Country Status (10)

Country Link
US (1) US6611569B1 (en)
EP (1) EP1057253B1 (en)
JP (1) JP2001519611A (en)
CN (1) CN1171379C (en)
AU (1) AU9370298A (en)
BR (1) BR9812708A (en)
CA (1) CA2305134C (en)
DE (1) DE69838230T2 (en)
SE (1) SE514795C2 (en)
WO (1) WO1999018657A2 (en)

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US6973297B1 (en) 1999-09-01 2005-12-06 Sirific Wireless Corporation Method and apparatus for down-conversion of radio frequency (RF) signals with reduced local oscillator leakage

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US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US6370371B1 (en) * 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
JP2002076975A (en) * 2000-08-17 2002-03-15 Samsung Electronics Co Ltd Digital down converter and receiver
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
ATE343252T1 (en) * 2002-05-22 2006-11-15 Freescale Semiconductor Inc ANALOG-DIGITAL CONVERTER ARRANGEMENT AND METHOD
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7173980B2 (en) * 2002-09-20 2007-02-06 Ditrans Ip, Inc. Complex-IF digital receiver
CN100369377C (en) * 2003-04-16 2008-02-13 鼎芯半导体〔上海〕有限公司 Low-converter mixer with low noise high linear
US7486338B1 (en) * 2003-04-28 2009-02-03 Wyszynski Adam S Fully integrated terrestrial TV tuner architecture
US7162397B2 (en) * 2004-05-07 2007-01-09 Snap-On Incorporated Decoding an alternator output signal
JP2008523734A (en) * 2004-12-10 2008-07-03 マックスリニアー，インコーポレイティド Harmonic rejection receiver architecture and mixer
WO2007008930A2 (en) 2005-07-13 2007-01-18 Ultimate Balance, Inc. Orientation and motion sensing in athletic training systems, physical rehabilitation and evaluation systems, and hand-held devices
US20090102546A1 (en) * 2006-03-17 2009-04-23 Hiroshi Miyagi Composite band-pass filter and method of filtering quadrature signals
JP2009540741A (en) * 2006-06-16 2009-11-19 トムソン ライセンシング Multi-channel digital cable tuner
US8600290B2 (en) * 2007-06-05 2013-12-03 Lockheed Martin Corporation Hybrid band directed energy target disruption
US8525717B2 (en) * 2010-08-13 2013-09-03 Rf Micro Devices, Inc. Half-bandwidth based quadrature analog-to-digital converter
JP2019531676A (en) * 2016-02-28 2019-10-31 ワクスマン、シャイ FHSS hot spot apparatus and method
US11303326B2 (en) * 2018-03-08 2022-04-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for handling antenna signals for transmission between a base unit and a remote unit of a base station system
US11463071B2 (en) 2018-04-23 2022-10-04 Samsung Electronics Co,. Ltd Asymmetrical filtering to improve GNSS performance in presence of wideband interference
EP4339653A1 (en) * 2022-09-19 2024-03-20 Leuze electronic GmbH + Co. KG Optical sensor

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6973297B1 (en) 1999-09-01 2005-12-06 Sirific Wireless Corporation Method and apparatus for down-conversion of radio frequency (RF) signals with reduced local oscillator leakage
US7016662B1 (en) 1999-09-01 2006-03-21 Sirific Wireless Corporation Method and apparatus for up-conversion of radio frequency (RF) signals
US7046980B1 (en) 1999-09-01 2006-05-16 Sirific Wireless Corporation Method and apparatus for up-and down-conversion of radio frequency (RF) signals

Also Published As

Publication number Publication date
SE9703617L (en) 1999-04-04
AU9370298A (en) 1999-04-27
SE9703617D0 (en) 1997-10-03
EP1057253A2 (en) 2000-12-06
DE69838230D1 (en) 2007-09-20
CA2305134C (en) 2005-01-25
EP1057253B1 (en) 2007-08-08
JP2001519611A (en) 2001-10-23
WO1999018657A3 (en) 1999-06-24
US6611569B1 (en) 2003-08-26
WO1999018657A2 (en) 1999-04-15
CN1171379C (en) 2004-10-13
BR9812708A (en) 2000-11-28
DE69838230T2 (en) 2008-05-08
CN1273707A (en) 2000-11-15
SE514795C2 (en) 2001-04-23

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