Method for controlling the output power of digital cellular tele

Details Method for controlling the output power of digital cellular tele Method for controlling the output power of digital cellular tele

1991-04-22

1992-07-07

Mullins, James B.

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

330141, 330145, 330279, 330281, 375 98, 455126, 455127, H03G 320

Patent

active

051286297

ABSTRACT:
A controlled power amplifier system (211) wherein a sample (225) of the output power level of an on/off switched power amplifier (215) is compared with a reference signal (227) to produce a power level control signal (275) that controls the output power level of the power amplifier (215). When the power amplifier (215) is switched off, the control signal (275) is maintained at the level it had just prior to the transition from an on to an off state. The switching is performed offset from the ends of each switched power amplifier pulse envelope to allow the pulse amplitude to be leveled in the center of the pulse and yet allow the pulse rise and fall times of the pulse envelope to follow the power amplifier input.

REFERENCES:
patent: 4412337 (1983-10-01), Bickley et al.
patent: 4592073 (1986-05-01), Watanabe
patent: 4757502 (1988-07-01), Meuriche et al.
patent: 5054116 (1991-10-01), Davidson

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