Power control with a constant gain amplifier for portable radio

Details Power control with a constant gain amplifier for portable radio Power control with a constant gain amplifier for portable radio

1991-11-06

1994-04-12

Eisenzopf, Reinhard J.

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

455 89, H04B 140

Patent

active

053033957

ABSTRACT:
A system for controlling the power level of RF signals output by a portable radio transmitter having a first voltage supply, a first amplifier stage and a microcomputer coupled to the first amplifier stage for selecting one of a set of power levels. An indicator signals when the radio transmitter is coupled to a vehicular voltage supply and, in response, the microcomputer generates a control signal representative of a desired power level. A second amplifier stage is coupled to the first amplifier stage and receives RF signals at the selected power level. A constant gain control circuit coupled to the second amplifier stage receives the control signal and responds by setting the gain of the second amplifier stage at one of at least two constant gain values so that the output RF signals are provided with the desired power level.

REFERENCES:
patent: 4636741 (1987-01-01), Mitzlaff
patent: 4680787 (1987-07-01), Marry
patent: 5033109 (1991-07-01), Kawano et al.
patent: 5146614 (1992-09-01), Furuno

Affiliated with

Also associated with

Rating

Power control with a constant gain amplifier for portable radio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power control with a constant gain amplifier for portable radio , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power control with a constant gain amplifier for portable radio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2106940