Car-mounted type booster system for hand-held phone

Details Car-mounted type booster system for hand-held phone Car-mounted type booster system for hand-held phone

1990-11-16

1992-04-28

Kuntz, Curtis

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

455127, H04B 1116

Patent

active

051095416

ABSTRACT:
The present invention provides a car-mounted booster system comprising a first coupler, connected to the first duplexer and the power module, which regulates an output of the first duplexer; a first amplifier connected to the first coupler; an A/D converter connected to the first amplifier, which converts the analog output signal from the first amplifier to a predetermined digital code, and generates a transmission verification signal for verification of a fact whether the output signal from the first amplifier is a transmission signal or not; a second coupler connected to the second duplexer and the power module, which regulates an output of the second duplexer; a second amplifier connected to the second coupler; and a D/A converter connected to the A/D converter, the second amplifier, and the power module, which generates a control signal to control the power module according to a comparison result after comparison between a signal level from the second amplifier and a signal level from the A/D converter, and a power supply to the Power Module according to the transmission verification signal from the A/D converter.

REFERENCES:
patent: 4625240 (1986-11-01), Yablowski et al.
patent: 4723304 (1988-02-01), Maeda
patent: 4870698 (1989-09-01), Kabuyama et al.
patent: 4903325 (1990-02-01), Yoshitake et al.
patent: 4962543 (1990-10-01), Kuge et al.
patent: 4997611 (1990-12-01), Maru

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