Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2006-10-17
2006-10-17
Bui, Bing Q. (Department: 2642)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S422100, C455S523000
Reexamination Certificate
active
07123939
ABSTRACT:
A wireless communications systems employing code-division multiple access information transmission techniques includes a transmission facility having ground-based transmission and reception electronic equipment, a remotely located RF power amplifier, an antenna, and an RF cable connecting the ground-based equipment with the remotely located RF power amplifier. Power level detectors in the ground-based equipment and in the remotely located RF power amplifier measure the signal level at each end of the RF cable. A microcontroller compares these measurements and adjusts a variable attenuator in the transmission signal path and a variable attenuator in the received signal path to compensate for signal level variability due to variations in signal loss.
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Bird John
Kazakevich Leonid
Bui Bing Q.
InterDigital Technology Corporation
Volpe and Koenig P.C.
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