A Short List of Invalidating Prior Art References for the ParkerVision Patents-in-suit


Abidi, “Direct-Conversion Radio Transceivers for Digital Communications “, 1995

Abidi, “A 1 GHz CMOS RF Front-End IC for a Direct-Conversion Receiver”, 1996

Berman, US Patent 3075150, 1963

Cannon, US Patent 3723910, 1973

Chang, “A CMOS Channel-Select Filter for a Direct-Conversion Wireless Receiver”, 1997

Chen, “A 0.25-mW Low-Pass Passive Sigma–Delta Modulator with Built-In Mixer for a 10-MHz IF Input”,  1997

Conway, “High Level RF Mixers”, 1998

Cottrell , US Patent 3243707, 1996

Cox, US Patent 5438693, 1994

Crols, “A 1.5 GHz Highly Linear CMOS Downconversion Mixer”, 1995

Crols, “CMOS Wireless Transceiver Design”, 1997

Czarnul, “Novel MOS Resistive Circuit for Synthesis of Fully Integrated Continuous-Time Filters”, 1986

Escobosa, US Patent 3424990, 1964

Gehring, US Patent 4893341, 1989

Hosenthein, US Patent 2961610, 1960 (Filed Aug 18, 1949)

Hull, “Analysis and Optimization of Monolithic RF Downconversion Receivers”, 1992

Johannson, “Time Resolution of NMOS Sampling Switches Used on Low-Swing Signals”, 1998

Karanicolas, “A 2.7-V 900-MHz CMOS LNA and Mixer”, 1996

Keys, “Low Distortion Mixers for RF Communications”, 1994

Kinget, “A 1-GHz CMOS Up-Conversion Mixer”, 1997

Lam, US Patent 5937013, 1997

Lee, “The Design of CMOS RF Integrated Circuits“, 1998

Leung, “Low power VLSI circuits for Mobile Communication”, 1996

Mack, “A 1-GHz BiCMOS RF Front-End IC”, 1994

Mikkelsen, “Front-End Architectures for CMOS Radio Receivers”, 1996

Nielsen, “Double Modulation Scheme for Switching Mixers Controlled by Sigma-Delta modulators”, 1998

Oxner, “Designing FET Balanced Mixers for High Dynamic Range (Section 3) LPD-14”, 1986

Rafuse, “Symmetric MOSFET Mixers of High Dynamic Range”, 1968

Razavi, “Architectures and Circuits for RF CMOS Receivers”, 1998

Ridgers, US Patent 4789837, 1987

Sen, “Design of Sampling Mixer and A/D Converter for High IF Digitization”, 1997

Sen, “A 150 MHz 13b 12.5mW IF Digitizer using Sampling Mixer”, 1998

Shahani,  “A 12mW Wide Dynamic Range CMOS Front-End for a Portable GPS Receiver”, 1997

Sheng, “A Low-Power CMOS Chipset for Spread-Spectrum Communications”, 1996

Song, “CMOS RF Circuits for Data Communications Applications”, 1986

Toole, “A Novel Highly Linear 1 GHz Switched-Current Sub-sampling Mixer”, 1996

van Graas, “The Fourth Method: Generating and Detecting SSB Signals”, QEX Sep 1990, 1990

Vice, US Patent 6108529, 1998

Ward, “A Wide Dynamic Range Single-Sideband Receiver”, 1967

Wiener, “2 TO 8 GHz Double Balanced MESFET Mixer With +30 DBM Input 3rd Order Intercept”, 1998

Yu, “Time Varying Volterra Series and Its Application to the Distortion Analysis of a Sampling Mixer”, 1997