Telecommunications – Transmitter – Power control – power supply – or bias voltage supply
Patent
1997-11-03
2000-03-07
Hunter, Daniel S.
Telecommunications
Transmitter
Power control, power supply, or bias voltage supply
455126, 4552501, 4552471, 330 51, A61B 104
Patent
active
060351810
ABSTRACT:
An apparatus (10) and method (100) optimize the transmit output power of a power amplifier (14) while providing for controlled backoff independent of temperature, gain stackup or other common error effects. The apparatus (10) and method (100) are particularly relevant to single channel per carrier (SCPC) satellite transmissions, such as a K-band satellite transmissions. The apparatus (10) and method (100) provide the ability to set a maximum drive level of a power amplifier (14) using a feedback loop without overdriving the power amplifier (14) into compression. This approach controls the spectral regrowth that results from running the power amplifier (14) in saturation and limits the AM/PM conversion in the power amplifier (14).
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Bogacz Frank J.
Gantt Alan T.
Hunter Daniel S.
McGurk Harold C.
Motorola Inc.
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