Pulse or digital communications – Transceivers
Patent
1997-03-25
1999-12-28
Bocure, Tesfaldet
Pulse or digital communications
Transceivers
375260, 375295, H04B 138, H04L 2728, H04L 2704
Patent
active
060091193
ABSTRACT:
A radio frequency (RF) transceiver adaptively maintains power output level linearity across a broad spectrum of transmitting frequencies. The RF transceiver comprises a frequency synthesizer adapted to modulate an information signal across a plurality of distinct channels and an amplifier adapted to amplify the modulated information signal to a desired power level for transmission as an RF signal. The transceiver includes a table of offset values having individual entries corresponding to each of the distinct channels. A portion of the amplified and modulated information signal is sampled to provide binary values corresponding to instantaneous power levels of the transceiver. The offset values are calculated by comparing the sampled binary values to optimal binary values. Thereafter, an amount of amplification provided by the amplifier for an associated one of the channels is controlled in accordance with a corresponding one of the offset values from the table.
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Jovanovich Alan F.
Mensonides John W.
Warren Bruce G.
Bocure Tesfaldet
Intermec IP Corp.
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