Method of and structure for increasing signal power over cellula

Details Method of and structure for increasing signal power over cellula Method of and structure for increasing signal power over cellula

1995-03-13

1997-09-09

Pham, Chi H.

Telecommunications

Transmitter and receiver at separate stations

Frequency or phase modulation

455 72, 455116, H04B 140, H04B 102

Patent

active

056666594

ABSTRACT:
The clipper contained in the standard cellular transceiver used in cellular telephone networks is effectively prevented from having any effect on a signal by reducing the signal amplitude so that the signal which passes through the clipper does not activate the clipper. The signal from the clipper is then re-amplified prior to being passed to the modulator for transmission over the airwaves. The signal power is further increased by adding a selected de-emphasis circuit to the system prior to the transmitter, the de-emphasis circuit causing the frequency components of the signal to decline in amplitude as a function of frequency by a selected amount, 6 dB per octave in one embodiment.

REFERENCES:
patent: 4539707 (1985-09-01), Jacobs et al.
patent: 5226178 (1993-07-01), Eastmond et al.
patent: 5386590 (1995-01-01), Dolan
patent: 5507033 (1996-04-01), Dolan

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