US Patent No: 7,194,246

Number of patents in Portfolio can not be more than 2000

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

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ALSO PUBLISHED AS: 20050202797
ATTORNEY / AGENT: (SPONSORED)
 

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Abstract

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, FL165

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bultman, Michael J Jacksonville, FL 142 4829
Cook, Robert W Switzerland, FL 140 4837
Looke, Richard C Jacksonville, FL 136 4836
Moses, Charley D Jacksonville, FL 6 101
Sorrells, David F Middleburg, FL 262 6833

Cited Art

Patent Info (Count) # Cites Year
 
PARKERVISION, INC. (38)
6,049,706 Integrated frequency translation and selectivity 124 1998
6,061,551 Method and system for down-converting electromagnetic signals 127 1998
6,061,555 Method and system for ensuring reception of a communications signal 111 1998
6,091,940 Method and system for frequency up-conversion 114 1998
6,370,371 Applications of universal frequency translation 107 1999
6,560,301 Integrated frequency translation and selectivity with a variety of filter embodiments 88 1999
6,580,902 Frequency translation using optimized switch structures 91 1999
6,687,493 Method and circuit for down-converting a signal using a complementary FET structure for improved dynamic range 91 1999
6,266,518 Method and system for down-converting electromagnetic signals by sampling and integrating over apertures 108 1999
6,647,250 Method and system for ensuring reception of a communications signal 95 1999
6,353,735 MDG method for output signal generation 98 1999
6,704,549 Multi-mode, multi-band communication system 97 2000
7,006,805 Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service 65 2000
6,634,555 Bar code scanner using universal frequency translation technology for up-conversion and down-conversion 85 2000
6,853,690 Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments 77 2000
6,879,817 DC offset, re-radiation, and I/Q solutions using universal frequency translation technology 72 2000
7,110,435 Spread spectrum applications of universal frequency translation 66 2000
6,798,351 Automated meter reader applications of universal frequency translation 80 2000
7,039,372 Method and system for frequency up-conversion with modulation embodiments 65 2000
7,065,162 Method and system for down-converting an electromagnetic signal, and transforms for same 71 2000
6,694,128 Frequency synthesizer using universal frequency translation technology 89 2000
6,873,836 Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology 80 2000
7,027,786 Carrier and clock recovery using universal frequency translation 60 2000
7,082,171 Phase shifting applications of universal frequency translation 64 2000
7,054,296 Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation 156 2000
7,072,390 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments 63 2000
7,110,444 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations 65 2000
6,813,485 Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same 97 2001
7,010,286 Apparatus, system, and method for down-converting and up-converting electromagnetic signals 69 2001
7,085,335 Method and apparatus for reducing DC offsets in a communication system 63 2001
7,010,559 Method and apparatus for a parallel correlator and applications thereof 71 2001
7,016,663 Applications of universal frequency translation 61 2002
7,072,427 Method and apparatus for reducing DC offsets in a communication system 77 2002
6,975,848 Method and apparatus for DC offset removal in a radio frequency communication channel 64 2002
6,963,734 Differential frequency down-conversion using techniques of universal frequency translation technology 70 2002
6,836,650 Methods and systems for down-converting electromagnetic signals, and applications thereof 81 2002
7,076,011 Integrated frequency translation and selectivity 59 2003
7,107,028 Apparatus, system, and method for up converting electromagnetic signals 58 2004
 
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NOKIA MOBILE PHONES LTD. (7)
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2002/0172,293 Non-zero complex weighted space-time code for multiple antenna transmission 1 2001
 
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FREESCALE SEMICONDUCTOR, INC. (6)
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INTEL CORPORATION (6)
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RAYTHEON COMPANY (6)
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SONY CORPORATION (6)
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FUJITSU LIMITED (5)
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5,650,785 Low power GPS receiver 134 1994
 
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5,642,071 Transit mixer with current mode input 107 1995
 
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4,380,828 UHF MOSFET Mixer 64 1981
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (7)
4,320,536 Subharmonic pumped mixer circuit 120 1979
4,716,388 Multiple output allpass switched capacitor filters 106 1984
5,010,585 Digital data and analog radio frequency transmitter 132 1990
5,214,787 Multiple audio channel broadcast system 113 1990
5,307,517 Adaptive notch filter for FM interference cancellation 130 1991
5,915,278 System for the measurement of rotation and translation for modal analysis 100 1995
6,005,903 Digital correlator 106 1996

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
PARKERVISION, INC. (48)
7,515,896 Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships 31 2000
8,295,406 Universal platform module for a plurality of communication protocols 3 2000
7,321,735 Optical down-converter using universal frequency translation technology 43 2000
7,379,515 Phased array antenna applications of universal frequency translation 45 2001
7,460,584 Networking methods and systems 31 2002
7,379,883 Networking methods and systems 41 2002
7,321,751 Method and apparatus for improving dynamic range in a communication system 44 2002
7,321,640 Active polyphase inverter filter for quadrature signal generation 42 2003
7,454,453 Methods, systems, and computer program products for parallel correlation and applications thereof 32 2003
7,308,242 Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same 44 2004
7,822,401 Apparatus and method for down-converting electromagnetic signals by controlled charging and discharging of a capacitor 19 2004
7,496,342 Down-converting electromagnetic signals, including controlled discharge of capacitors 32 2004
7,386,292 Apparatus, system, and method for down-converting and up-converting electromagnetic signals 42 2004
7,483,686 Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology 30 2004
7,773,688 Method, system, and apparatus for balanced frequency up-conversion, including circuitry to directly couple the outputs of multiple transistors 21 2004
7,653,145 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations 24 2005
7,539,474 DC offset, re-radiation, and I/Q solutions using universal frequency translation technology 30 2005
7,433,910 Method and apparatus for the parallel correlator and applications thereof 35 2005
7,697,916 Applications of universal frequency translation 22 2005
7,376,410 Methods and systems for down-converting a signal using a complementary transistor structure 40 2006
7,653,158 Gain control in a communication channel 25 2006
7,693,230 Apparatus and method of differential IQ frequency up-conversion 22 2006
7,724,845 Method and system for down-converting and electromagnetic signal, and transforms for same 23 2006
7,599,421 Spread spectrum applications of universal frequency translation 28 2006
7,529,522 Apparatus and method for communicating an input signal in polar representation 30 2006
8,160,196 Networking methods and systems 7 2006
7,546,096 Frequency up-conversion using a harmonic generation and extraction module 32 2007
7,936,022 Method and circuit for down-converting a signal 14 2008
7,554,508 Phased array antenna applications on universal frequency translation 32 2008
7,991,815 Methods, systems, and computer program products for parallel correlation and applications thereof 13 2008
7,937,059 Converting an electromagnetic signal via sub-sampling 14 2008
7,693,502 Method and system for down-converting an electromagnetic signal, transforms for same, and aperture relationships 21 2008
7,865,177 Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships 16 2009
7,826,817 Applications of universal frequency translation 20 2009
7,894,789 Down-conversion of an electromagnetic signal with feedback control 15 2009
8,019,291 Method and system for frequency down-conversion and frequency up-conversion 13 2009
8,233,855 Up-conversion based on gated information signal 4 2009
7,929,638 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments 15 2010
8,036,304 Apparatus and method of differential IQ frequency up-conversion 13 2010
8,223,898 Method and system for down-converting an electromagnetic signal, and transforms for same 4 2010
8,077,797 Method, system, and apparatus for balanced frequency up-conversion of a baseband signal 13 2010
8,295,800 Apparatus and method for down-converting electromagnetic signals by controlled charging and discharging of a capacitor 3 2010
8,160,534 Applications of universal frequency translation 7 2010
8,340,618 Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships 4 2010
8,224,281 Down-conversion of an electromagnetic signal with feedback control 4 2010
8,190,116 Methods and systems for down-converting a signal using a complementary transistor structure 5 2011
8,229,023 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments 4 2011
8,190,108 Method and system for frequency up-conversion 5 2011
 
UNIVERSITAT BERN (1)
7,620,378 Method and system for frequency up-conversion with modulation embodiments 25 2007
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (2)
8,407,061 Networking methods and systems 0 2008
8,446,994 Gain control in a communication channel 0 2009

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