Power booster for a radio telephone

Details Power booster for a radio telephone Power booster for a radio telephone

1992-09-17

1994-03-01

Mullins, James B.

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

330279, 455116, 455126, H03G 320

Patent

active

052911470

ABSTRACT:
A power booster (10) comprises a power amplifier (5) and is coupled to a portable radio telephone (20) which transmits an RF signal at one of a predetermined set of power levels. A first detector (6) generates an output signal C indicative of the power of the RF signal received by the booster. The signal C is used to generate a reference signal rf from a look up table (8) in which is stored a set of values corresponding with the respective power levels. The reference signal rf, which indicates the required power level, is applied to a power control circuit (7) which controls the gain of the amplifier (5) to maintain the power output substantially constant at the required power level as determined by the value of the reference signal rf.

REFERENCES:
patent: 5101173 (1992-03-01), DiPiazza et al.
patent: 5193223 (1993-03-01), Walczak et al.
"An Integrated Chipset For Cellular Mobile Telephones", by Trevor Hall & Peter Hall from Electronic Components and Applications, vol. 10, No. 1, pp. 31-36.

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