Temperature compensated power control circuit

Details Temperature compensated power control circuit Temperature compensated power control circuit

1997-07-08

1999-09-21

Urban, Edward F.

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

455126, 455115, H04Q 720

Patent

active

059566272

ABSTRACT:
A temperature compensation technique employing a directional coupler providing signals from a forward sample port to a detector circuit for providing a DC output representative of transmitted power. A temperature compensation circuit including a current source is coupled to a reverse sample port of the directional coupler for providing a compensating DC bias current via said coupler, to the detector circuit. The detector circuit and the temperature compensation circuit each include matched diodes and corresponding circuits for tracking temperature and offsetting the effects of temperature on the DC output of the detector circuit.

REFERENCES:
patent: 3947706 (1976-03-01), Holmes
patent: 4319196 (1982-03-01), Kwan
patent: 4523155 (1985-06-01), Walczak et al.
patent: 4970456 (1990-11-01), Holcomb et al.
patent: 5113336 (1992-05-01), Takahashi et al.
patent: 5196806 (1993-03-01), Ichihara
patent: 5392464 (1995-02-01), Pakonen
patent: 5659253 (1997-08-01), Busking
patent: 5678209 (1997-10-01), Strakovsky
patent: 5732332 (1998-03-01), Iida

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