Digital compensation for nonlinearities in a phase-locked...

Details Digital compensation for nonlinearities in a phase-locked... Digital compensation for nonlinearities in a phase-locked...

2006-12-21

2009-12-29

Le, Thanh C (Department: 2618)

Telecommunications

Transmitter

With feedback of modulated output signal

C375S297000, C330S149000

Reexamination Certificate

active

07639992

ABSTRACT:
A polar transmitter includes a digital processor for producing a phase correction signal and a complex modulated digital signal including a digital phase-modulated signal. The phase correction signal is added to the digital phase-modulated signal to produce a corrected digital phase signal. The corrected digital phase signal is input to a phase-locked loop (PLL) to produce an RF phase signal that tracks the phase of the digital phase-modulated signal based on the corrected digital phase signal.

REFERENCES:
patent: 2008/0297247 (2008-12-01), Rabjohn et al.
patent: 2008/0298501 (2008-12-01), Rabjohn et al.
patent: 2009/0081968 (2009-03-01), Vinayak et al.

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