Representative patents and related filings

By James A. Crawford:

 

4,586,005 Enhanced Analog Phase Interpolation for Fractional-N Frequency Synthesis
4,668,992 Fast Phase-Lock Frequency Synthesizer
4,634,998 Fast Phase-Lock Frequency Synthesizer with Variable Sampling Efficiency
4,771,248 Fast Phase-Lock Frequency Synthesizer
4,810,904 Sample-and-Hold Phase Detector Circuit
5,282,227 Communication Signal Detection and Acquisition
5,796,783 Digital Transmission System
6,433,742 Diversity Antenna Structure for Wireless Communications
6,438,367 Transmission Security for Wireless Communications
6,456,242 Conformal Box Antenna
6,456,245 Card-Based Diversity Antenna Structure for Wireless Communications
6,549,561 OFDM Pilot Tone Tracking for Wireless LAN
6,549,583 Optimum Phase Error Metric for OFDM Pilot Tone Tracking in Wireless LAN
6,633,616 OFDM Pilot Tone Tracking for Wireless LAN
6,650,616 Transmission Security for Wireless Communications
6,879,840 Method and Apparatus for Adaptive QoS-Based Joint Rate and Power Control Algorithm in Multi-Rate Wireless Systems
6,980,147 Channelized Analog-to-Digital Converter
7,652,608 Channelized Analog-to-Digital Converter
7,924,101 Systems and Methods for Improved VCO Gain Tracking Loop
8,111,776 Pulse Insertion Systems and Methods for Polar Modulation
US 2003/

0002471

Method for Estimating Carrier-to-Noise-Plus-Interference Ratio (CNIR) for OFDM Waveforms and the User Thereof for Diversity Antenna Branch Selection
US 2002/0160737 Method and Apparatus for Diversity Branch Selection
US 2002/0164968 Probing Scheme for Diversity Antenna Branch Selection
US 2004/0037366 Apparatus and Method for Multicarrier Modulation and Demodulation