Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1996-01-26
1997-08-12
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342101, 342386, 342418, H01Q 302
Patent
active
056570260
ABSTRACT:
A method and apparatus for locating and tracking a portable transmitter that may be deposited with currency or other items desired to be tracked, comprising a doppler antenna array, analog antenna switching, radio frequency and intermediate frequency circuitry and a digital signal processor, exhibiting increasing sensitivity, accuracy, and range.
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Chen Zhaoliang
Culpepper Jerry W.
Markus John D.
Smith Lawrence M.
Electronic Tracking Systems, Inc.
Phan Dao L.
Tarcza Thomas H.
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