1
Robert W Boyd, David J Stryker, Ronald J Hash, Donald K Belcher, Michael A Wohl, Timothy C Harrington: Distributed network for multi-lateration with circularly polarized antenna for hemispherical coverage. Wherenet, Charles E Wands, October 3, 2000: US06127976 (119 worldwide citation)

A distributed radio geo-location and tracking system has a distributed subsystem architecture that distributes its processing workload over a plurality of information handling and processing subsystems. For maximum detection capability, each of a plurality of tag emission receivers is equipped with ...


2
Donald K Belcher, Michael A Wohl, Kent E Bagwell: Feed-forward correction loop with adaptive predistortion injection for linearization of RF power amplifier. Spectrian, Charles E Wands, June 2, 1998: US05760646 (94 worldwide citation)

A linearization scheme for an RF power amplifier combines an adaptive predistortion modulator with a feedforward error correction loop, which cancels noise imparted by predistortion modulation to the amplified signal, and minimizes distortion in the RF amplifier's output to a level that allows the u ...


3
Donald K Belcher, Robert W Boyd, Michael A Wohl: Interference suppression for wireless local area network and location system. WhereNet, Allen Dyer Doppelt Milbrath & Gilchrist P A, May 10, 2005: US06892054 (79 worldwide citation)

A wireless local area network and location system for locating objects within a monitored environment are disclosed. A plurality of access point stations receive and transmit communication signals within a wireless local area network. A processor is operatively connected to each of the access point ...


4
Robert W Boyd, Donald K Belcher, Michael A Wohl: Multi-lateration system with automatic calibration and error removal. Wherenet Corporation, Allen Dyer Doppelt Milbrath & Gilchrist P A, April 30, 2002: US06380894 (78 worldwide citation)

An asset management radio location system uses time-of-arrival differentiation for random and repetitive spread spectrum, short duration transmissions from object-attached tags, to geolocate objects within a monitored environment. An object location processor is coupled to distributed tag transmissi ...


5
Donald K Belcher, Robert W Boyd, Michael A Wohl: Radio geo-location system with advanced first received wavefront arrival determination. Widata Corporation, Charles E Wands, November 30, 1999: US05995046 (70 worldwide citation)

An asset management radio location system uses time-of-arrival differentiation for random and repetitive spread spectrum, short duration pulse `blinks` from object-attached tags, to provide a practical, continuous identification of the location of each and every object within an environment of inter ...


6
Donald K Belcher, Robert W Boyd, Michael A Wohl: Radio geo-location system with advanced first received wavefront arrival determination. Wherenet, Allen Dyer Doppelt Milbrath & Gilchrist P A, September 19, 2000: US06121926 (69 worldwide citation)

An asset management radio location system uses time-of-arrival differentiation for random and repetitive spread spectrum, short duration pulse `blinks` from object-attached tags, to provide a practical, continuous identification of the location of each and every object within an environment of inter ...


7
Donald K Belcher, Michael A Wohl, Kent E Bagwell: Adaptive compensation of RF amplifier distortion by injecting predistortion signal derived from respectively different functions of input signal amplitude. Spectrian, Charles E Wands, April 6, 1999: US05892397 (68 worldwide citation)

The envelope-dependency of the distortion-introducing behavior of an RF power amplifier is used to derive a predistortion signal, that is derived from a plurality of respectively different work function representative signals. Each work function signal, in turn, is based upon the envelope of the inp ...


8
David S Wisherd, Robert W Boyd, Tom Richardson, Santiago Romero, Michael A Wohl: System and method for tracking vehicles and containers. Wherenet, Alston & Bird, July 13, 2010: US07755541 (40 worldwide citation)

A location system for tracking assets within a terminal includes a Differential Global Positioning System (DGPS) reference receiver within the terminal that receives GPS signals and generates DGPS correction data. In one aspect, a roving receiver unit is carried by an asset to be tracked within the ...


9
Timothy C Harrington, Michael A Wohl: Wireless local area network system with mobile access point station determination. Wherenet, Allen Dyer Doppelt Milbrath & Gilchrist P A, May 16, 2006: US07046657 (36 worldwide citation)

A wireless local area network system includes a plurality of access point stations at known locations that receive and transmit communication signals within the wireless local area network. A mobile access point station receives and transmits communication signals within the wireless local area netw ...


10
Michael A Wohl, Robert W Boyd: System and method for identifying objects using single connection line. Wherenet, Allen Dyer Doppelt Milbrath & Gilchrist P A, December 2, 2003: US06655582 (30 worldwide citation)

A system and method for identifying objects within a monitored environment includes a plurality of tag signal readers contained within the monitored environment and serially connected along a single connection line as a coaxial cable for receiving tag signals from at least one tag contained within t ...



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