Methods and systems for down-converting a signal using a complementary transistor structure

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7194246
APP PUB NO 20050202797A1
SERIAL NO

11020547

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased according to the aliasing signal to down-convert the EM signal. The term aliasing, as used herein, refers to both down-converting an EM signal by under-sampling the EM signal at an aliasing rate, and down-converting an EM signal by transferring energy from the EM signal at the aliasing rate. In an embodiment, the EM signal is down-converted to an intermediate frequency (IF) signal. In another embodiment, the EM signal is down-converted to a demodulated baseband information signal. In another embodiment, the EM signal is a frequency modulated (FM) signal, which is down-converted to a non-FM signal, such as a phase modulated (PM) signal or an amplitude modulated (AM) signal.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PARKERVISION, INC.JACKSONVILLE, FL203

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bultman, Michael J Jacksonville, FL 127 5788
Cook, Robert W Switzerland, FL 129 5693
Looke, Richard C Jacksonville, FL 121 5665
Moses, Charley D Jacksonville, FL 16 152
Sorrells, David F Jacksonville, FL 225 9937

Cited Art Landscape

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THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (1)
5937013 Subharmonic quadrature sampling receiver and design 120 1997
 
Takeshi Ikeda (1)
6034566 Tuning amplifier 64 1998
 
Pioneer Electronic Corporation (1)
5140705 Center-tapped coil-based tank circuit for a balanced mixer circuit 115 1990
 
HONEYWELL INC. (1)
5263198 Resonant loop resistive FET mixer 85 1991
 
KYOCERA MITA CORPORATION (1)
5901187 Diversity reception device 112 1998
 
ALCATEL N.V. (1)
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RPX CORPORATION (1)
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LAWRENCE LIVERMORE NATIONAL SECURITY, LLC (3)
5471162 High speed transient sampler 157 1992
5479120 High speed sampler and demultiplexer 152 1994
5523760 Ultra-wideband receiver 234 1994
 
ALCATEL (1)
5926513 Receiver with analog and digital channel selectivity 110 1997
 
FLUKE CORPORATION (1)
4965467 Sampling system, pulse generation circuit and sampling circuit suitable for use in a sampling system, and oscilloscope equipped with a sampling system 105 1989
 
M&FC HOLDING, LLC (3)
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MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (12)
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4868654 Sub-nyquist sampling encoder and decoder of a video system 121 1988
5361408 Direct conversion receiver especially suitable for frequency shift keying (FSK) modulated signals 111 1991
5319799 Signal oscillation method for time-division duplex radio transceiver and apparatus using the same 131 1992
5369789 Burst signal transmitter 131 1994
5640428 Direct conversion receiver 114 1995
5760629 DC offset compensation device 98 1996
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ST-ERICSSON SA, EN LIQUIDATION (1)
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4484143 CCD Demodulator circuit 95 1982
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4814649 Dual gate FET mixing apparatus with feedback means 77 1987
5095533 Automatic gain control system for a direct conversion receiver 124 1990
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5640415 Bit error performance of a frequency hopping, radio communication system 119 1994
 
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5663878 Apparatus and method for generating a low frequency AC signal 104 1996
 
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5150124 Bandpass filter demodulation for FM-CW systems 105 1991
 
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6230000 Product detector and method therefor 119 1998
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5638396 Laser ultrasonics-based material analysis system and method 114 1995
 
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5903553 Enhanced signal collision detection method in wireless communication system 119 1996
 
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4920510 Sample data band-pass filter device 102 1987
 
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6091289 Low pass filter 91 1998
 
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6608647 Methods and apparatus for charge coupled device image acquisition with independent integration and readout 90 1998
 
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4894766 Power supply frequency converter 103 1988
 
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6125271 Front end filter circuitry for a dual band GSM/DCS cellular phone 108 1998
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KABUSHIKI KAISHA TOSHIBA (6)
4734591 Frequency doubler 111 1986
5124592 Active filter 104 1991
5742189 Frequency conversion circuit and radio communication apparatus with the same 146 1995
5634207 Frequency converter capable of reducing noise components in local oscillation signals 108 1996
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4612518 QPSK modulator or demodulator using subharmonic pump carrier signals 109 1985
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4616191 Multifrequency microwave source 105 1983
4634998 Fast phase-lock frequency synthesizer with variable sampling efficiency 113 1985
4810904 Sample-and-hold phase detector circuit 109 1988
4955079 Waveguide excited enhancement and inherent rejection of interference in a subharmonic mixer 119 1989
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6147340 Focal plane readout unit cell background suppression circuit and method 107 1998
 
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Synergy Microwave Corporation (1)
5416449 Modulator with harmonic mixers 94 1994
 
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5825257 GMSK modulator formed of PLL to which continuous phase modulated signal is applied 117 1997
 
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5636140 System and method for a flexible MAC layer interface in a wireless local area network 140 1995
 
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4628517 Digital radio system 144 1985
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5115409 Multiple-input four-quadrant multiplier 126 1989
5020154 Transmission link 105 1990
 
FUJITSU LIMITED (5)
4870659 FSK demodulation circuit 109 1988
5760632 Double-balanced mixer circuit 93 1996
6011435 Transmission-line loss equalizing circuit 100 1997
5834979 Automatic frequency control apparatus for stabilization of voltage-controlled oscillator 93 1997
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THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY (3)
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* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (1)
9088471 Quadrature combining and adjusting 6 2014
 
PARKERVISION, INC. (58)
7515896 Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships 35 2000
8295406 Universal platform module for a plurality of communication protocols 15 2000
7321735 Optical down-converter using universal frequency translation technology 44 2000
7379515 Phased array antenna applications of universal frequency translation 55 2001
7460584 Networking methods and systems 34 2002
7379883 Networking methods and systems 42 2002
7321751 Method and apparatus for improving dynamic range in a communication system 47 2002
7321640 Active polyphase inverter filter for quadrature signal generation 47 2003
* 2003/0227,983 Active polyphase inverter filter for quadrature signal generation 7 2003
7454453 Methods, systems, and computer program products for parallel correlation and applications thereof 34 2003
* 7308242 Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same 46 2004
* 2005/0009,494 Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same 3 2004
7822401 Apparatus and method for down-converting electromagnetic signals by controlled charging and discharging of a capacitor 21 2004
7496342 Down-converting electromagnetic signals, including controlled discharge of capacitors 43 2004
7386292 Apparatus, system, and method for down-converting and up-converting electromagnetic signals 49 2004
7483686 Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology 32 2004
7773688 Method, system, and apparatus for balanced frequency up-conversion, including circuitry to directly couple the outputs of multiple transistors 33 2004
* 2005/0100,115 Method, system, and apparatus for balanced frequency Up-conversion of a baseband signal 5 2004
7653145 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations 25 2005
7539474 DC offset, re-radiation, and I/Q solutions using universal frequency translation technology 39 2005
* 2005/0143,042 DC offset, re-radiation, and I/Q solutions using universal frequency translation technology 5 2005
7433910 Method and apparatus for the parallel correlator and applications thereof 36 2005
7697916 Applications of universal frequency translation 23 2005
* 2006/0014,501 Applications of universal frequency translation 0 2005
7376410 Methods and systems for down-converting a signal using a complementary transistor structure 41 2006
7653158 Gain control in a communication channel 28 2006
7693230 Apparatus and method of differential IQ frequency up-conversion 38 2006
7724845 Method and system for down-converting and electromagnetic signal, and transforms for same 26 2006
* 2006/0198,474 Method and system for down-converting and electromagnetic signal, and transforms for same 6 2006
7599421 Spread spectrum applications of universal frequency translation 33 2006
* 2006/0280,231 Spread spectrum applications of universal frequency translation 5 2006
7529522 Apparatus and method for communicating an input signal in polar representation 31 2006
8160196 Networking methods and systems 10 2006
7546096 Frequency up-conversion using a harmonic generation and extraction module 33 2007
7936022 Method and circuit for down-converting a signal 16 2008
7554508 Phased array antenna applications on universal frequency translation 35 2008
7991815 Methods, systems, and computer program products for parallel correlation and applications thereof 15 2008
7937059 Converting an electromagnetic signal via sub-sampling 19 2008
7693502 Method and system for down-converting an electromagnetic signal, transforms for same, and aperture relationships 24 2008
8407061 Networking methods and systems 6 2008
7865177 Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships 26 2009
7826817 Applications of universal frequency translation 22 2009
7894789 Down-conversion of an electromagnetic signal with feedback control 20 2009
8019291 Method and system for frequency down-conversion and frequency up-conversion 15 2009
8233855 Up-conversion based on gated information signal 9 2009
8446994 Gain control in a communication channel 10 2009
7929638 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments 16 2010
8036304 Apparatus and method of differential IQ frequency up-conversion 17 2010
8223898 Method and system for down-converting an electromagnetic signal, and transforms for same 9 2010
8077797 Method, system, and apparatus for balanced frequency up-conversion of a baseband signal 18 2010
8295800 Apparatus and method for down-converting electromagnetic signals by controlled charging and discharging of a capacitor 8 2010
8160534 Applications of universal frequency translation 10 2010
8340618 Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships 11 2010
8224281 Down-conversion of an electromagnetic signal with feedback control 10 2010
8190116 Methods and systems for down-converting a signal using a complementary transistor structure 10 2011
8229023 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments 11 2011
8190108 Method and system for frequency up-conversion 9 2011
8594228 Apparatus and method of differential IQ frequency up-conversion 7 2011
 
UNIVERSITAT BERN (1)
7620378 Method and system for frequency up-conversion with modulation embodiments 27 2007
* Cited By Examiner

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