Telecommunications – Interference signal transmission
Patent
1998-04-27
1999-12-07
Miller, John W.
Telecommunications
Interference signal transmission
348 12, H04N 714, H04H 100
Patent
active
059997966
ABSTRACT:
The present invention is a passive filter for controlling the return path loss in a communication system having a forward path and return path. The filter comprises first and second terminals, a passive filter network, and a compensation circuit. The passive filter network is coupled to the first and second terminals and to ground. The filter network has a first passband which passes signals in the forward path and a second passband which passes signals in the return path. The filter network includes a passive attenuator network which attenuates signals in the return path by a predetermined amount as the signals pass through the second passband. The compensation circuit is coupled to the passive filter network, and is configured to compensate for expected perturbations in the frequency response of the second passband of the filter network.
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Tresness Andrew F.
Zelenz Martin L.
Miller John W.
Tresness Irrevocable Patent Trust
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