Circuit for controlling the transmit power level in a booster am

Details Circuit for controlling the transmit power level in a booster am Circuit for controlling the transmit power level in a booster am

1993-06-02

1995-09-12

Urban, Edward F.

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

455 90, H04B 140

Patent

active

054506204

ABSTRACT:
A booster (2) of a digital portable radio telephone (1) is connected to a connector (11) by arranging a switch (9) in the control signal (TXC-DA) path, said switch changing, under the control of a logic control signal (BST), the power control circuit signal (TXC) of the portable radio telephone into a fixed signal (V.sub.bst). As a result, a transmit signal of constant power is led to the booster amplifier to be amplified to the level of the control signal (TXC-DA). Similar power control circuits (4,14) are arranged in the portable radio telephone and in the booster amplifier, whereby the properties of the transmit pulse are preserved in booster use.

REFERENCES:
patent: 5077540 (1991-12-01), Keith et al.
patent: 5086508 (1992-02-01), Furuno
patent: 5101175 (1992-03-01), Vaisanen
patent: 5146614 (1992-09-01), Furuno

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