Apparatus for controlling an efficiency control signal to be sup

Details Apparatus for controlling an efficiency control signal to be sup Apparatus for controlling an efficiency control signal to be sup

1993-11-09

1996-01-09

Pham, Chi H.

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

455115, 455126, 330275, H03G 320, H04B 404

Patent

active

054836824

ABSTRACT:
A current flowing from a power supply to a power amplification circuit is detected at two adjacent transmission periods having a non-transmission period therebetween. Between the two transmission periods, whether the current is increased or decreased is detected. When the increase is detected, an efficiency control signal is obtained to be supplied to the power amplification circuit by subtracting an increased amount between the two preceding transmission periods from an efficiency control signal used at the last preceding transmission period, and, when the decrease is detected, the efficiency control signal is obtained to be supplied to the power amplification circuit by adding the increased amount to the efficiency control signal used at the last preceding transmission period.

REFERENCES:
patent: 5129098 (1992-07-01), McGirr et al.
patent: 5287555 (1994-02-01), Wilson et al.

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