CA2007149A1 - Homodyne down-converter with digital hilbert transform filtering - Google Patents

Homodyne down-converter with digital hilbert transform filtering

Info

Publication number
CA2007149A1
CA2007149A1 CA002007149A CA2007149A CA2007149A1 CA 2007149 A1 CA2007149 A1 CA 2007149A1 CA 002007149 A CA002007149 A CA 002007149A CA 2007149 A CA2007149 A CA 2007149A CA 2007149 A1 CA2007149 A1 CA 2007149A1
Authority
CA
Canada
Prior art keywords
data
converter
analog
signal
digital
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
CA002007149A
Other languages
French (fr)
Other versions
CA2007149C (en
Inventor
Charles Mcdonald Puckette
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of CA2007149A1 publication Critical patent/CA2007149A1/en
Application granted granted Critical
Publication of CA2007149C publication Critical patent/CA2007149C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H03D3/008—Compensating DC offsets
    • 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
    • H03D2200/008—Hilbert type transformation
    • 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
    • H03D3/006—Demodulation of angle-, frequency- or phase- modulated oscillations by sampling the oscillations and further processing the samples, e.g. by computing techniques
    • 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

Abstract

A homodyne down-converter, for use in an IF
signal demodulator and the lake, includes an analog-to-digital converter (ADC) which receives the IF analog signal for conversion to a digital data stream by sampling at a sampling rate frequency substantially equal to four times the IF signal frequency. A digital mixer controllably inverts the sampled data to convert the data to baseband, before a circuit removes the effects of DC offset in the analog IF signal applied to the ADC. A discrete Hilbert Transform filter is used for generating streams of sequential in-phase I' and quadrature-phase Q' data words, which are resampled to temporally align the two data word streams at a new data rate, thus effectively removing sample offset without the need for separate misalignment correction circuitry.
CA002007149A 1989-03-10 1990-01-04 Homodyne down-converter with digital hilbert transform filtering Expired - Lifetime CA2007149C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/321,697 US4902979A (en) 1989-03-10 1989-03-10 Homodyne down-converter with digital Hilbert transform filtering
US321,697 1989-03-10

Publications (2)

Publication Number Publication Date
CA2007149A1 true CA2007149A1 (en) 1990-09-10
CA2007149C CA2007149C (en) 2001-03-20

Family

ID=23251651

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002007149A Expired - Lifetime CA2007149C (en) 1989-03-10 1990-01-04 Homodyne down-converter with digital hilbert transform filtering

Country Status (2)

Country Link
US (1) US4902979A (en)
CA (1) CA2007149C (en)

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058200A (en) * 1990-06-04 1991-10-15 General Electric Company Transmitter location searching system
JP2837982B2 (en) * 1991-12-27 1998-12-16 三菱電機株式会社 Delay detection demodulator
US5482044A (en) * 1992-01-14 1996-01-09 Diasonics Ultrasound, Inc. Direct demodulation in ultrasound instruments
US5387913A (en) * 1993-11-09 1995-02-07 Motorola, Inc. Receiver with digital tuning and method therefor
DE4342145A1 (en) * 1993-12-10 1995-06-14 Blaupunkt Werke Gmbh Circuit arrangement for analog / digital conversion of frequency-modulated intermediate frequency signals
DE19614979C2 (en) 1995-04-20 2001-05-17 Fujitsu Ltd Radio frequency transceiver for data communication
US5864754A (en) * 1996-02-05 1999-01-26 Hotto; Robert System and method for radio signal reconstruction using signal processor
US8280334B2 (en) 1996-02-05 2012-10-02 American Radio Llc System and method for radio signal reconstruction using signal processor
US6026129A (en) * 1996-03-27 2000-02-15 Matsushita Electric Industrial Co., Ltd. Radio receiving apparatus for receiving communication signals of different bandwidths
US5838735A (en) * 1996-07-08 1998-11-17 Telefonaktiebolaget Lm Ericsson Method and apparatus for compensating for a varying d.c. offset in a sampled signal
US6049573A (en) * 1997-12-11 2000-04-11 Massachusetts Institute Of Technology Efficient polyphase quadrature digital tuner
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
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6061551A (en) * 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US6091940A (en) 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US7039372B1 (en) * 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
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
US6542722B1 (en) * 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US7236754B2 (en) * 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6879817B1 (en) * 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6873836B1 (en) * 1999-03-03 2005-03-29 Parkervision, Inc. Universal platform module and methods and apparatuses relating thereto enabled by 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
US7065162B1 (en) * 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
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
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US7292835B2 (en) * 2000-01-28 2007-11-06 Parkervision, Inc. Wireless and wired cable modem applications of universal frequency translation technology
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US7010559B2 (en) * 2000-11-14 2006-03-07 Parkervision, Inc. Method and apparatus for a parallel correlator and applications thereof
US7454453B2 (en) * 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
EP1209809A1 (en) * 2000-11-24 2002-05-29 STMicroelectronics S.r.l. Device and method for generating synchronous numeric signals
CN1516938A (en) * 2001-04-05 2004-07-28 施魏策尔工程实验公司 System and method for aligning data between local and remote sources thereof
US7072427B2 (en) * 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
JP3984482B2 (en) * 2002-02-04 2007-10-03 富士通株式会社 DC offset cancel circuit
KR20030068677A (en) * 2002-02-15 2003-08-25 대한민국 (창원대학 공작기계기술연구센터) Method for digital down conversion using double A-D Converter
US6700514B2 (en) * 2002-03-14 2004-03-02 Nec Corporation Feed-forward DC-offset canceller for direct conversion receiver
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US6876319B2 (en) * 2002-09-20 2005-04-05 Intersil Americas Inc. Integrated modulator and demodulator configuration
TWI280690B (en) * 2003-03-18 2007-05-01 Tdk Corp Electronic device for wireless communications and reflector device for wireless communication cards
US7342976B2 (en) * 2004-01-27 2008-03-11 Crestcom, Inc. Predistortion circuit and method for compensating A/D and other distortion in a digital RF communications transmitter
US7469491B2 (en) * 2004-01-27 2008-12-30 Crestcom, Inc. Transmitter predistortion circuit and method therefor
US7430248B2 (en) * 2004-01-27 2008-09-30 Crestcom, Inc. Predistortion circuit and method for compensating nonlinear distortion in a digital RF communications transmitter
US7099399B2 (en) * 2004-01-27 2006-08-29 Crestcom, Inc. Distortion-managed digital RF communications transmitter and method therefor
US7542519B2 (en) * 2005-12-29 2009-06-02 Crestcom, Inc. Radio frequency transmitter and method therefor
US8392176B2 (en) * 2006-04-10 2013-03-05 Qualcomm Incorporated Processing of excitation in audio coding and decoding
US7724840B2 (en) * 2006-12-19 2010-05-25 Crestcom, Inc. RF transmitter with predistortion and method therefor
US20080285640A1 (en) * 2007-05-15 2008-11-20 Crestcom, Inc. RF Transmitter With Nonlinear Predistortion and Method Therefor
US8645441B2 (en) * 2007-08-01 2014-02-04 Pentomics, Inc. Desensitized filters
US20090198500A1 (en) * 2007-08-24 2009-08-06 Qualcomm Incorporated Temporal masking in audio coding based on spectral dynamics in frequency sub-bands
US8428957B2 (en) 2007-08-24 2013-04-23 Qualcomm Incorporated Spectral noise shaping in audio coding based on spectral dynamics in frequency sub-bands
US8401600B1 (en) 2010-08-02 2013-03-19 Hypres, Inc. Superconducting multi-bit digital mixer
PL393534A1 (en) * 2010-12-31 2012-07-02 Uniwersytet Technologiczno-Przyrodniczy im. Jana i Jędrzeja Śniadeckich System for direct discrete Hilbert transformation
US9001932B2 (en) 2012-12-29 2015-04-07 Motorola Solutions, Inc. Method and apparatus for extracting the quadrature component of a complex signal from the in-phase component after baseband digitizing using a complex transform
CN109327233B (en) * 2018-10-11 2020-12-08 广东博威尔电子科技有限公司 Design method for digital receiver down converter in radio frequency front-end chip

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8301651A (en) * 1983-05-10 1984-12-03 Philips Nv MIXING DEVICE EQUIPPED WITH FIRST AND SECOND SQUARE STAGES.
US4647864A (en) * 1986-04-21 1987-03-03 General Electric Company Variable-delay, sine-cosine non-coherent demodulator
US4755761A (en) * 1986-06-26 1988-07-05 General Electric Company Zero intermediate-frequency demodulator

Also Published As

Publication number Publication date
CA2007149C (en) 2001-03-20
US4902979A (en) 1990-02-20

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Legal Events

Date Code Title Description
EEER Examination request
FZDC Discontinued application reinstated
MKEX Expiry