Method and apparatus for generating constant envelope...

Pulse or digital communications – Transmitters – Antinoise or distortion

Reexamination Certificate

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C375S298000, C375S308000, C332S162000

Reexamination Certificate

active

07864882

ABSTRACT:
A multi-mode communication device (100) uses a quadrature transmitter (102) for transmitting both amplitude and constant envelope angle-modulated signals. For angle modulation, a separate feedback path is used from that used for amplitude modulated signal transmission. An FM receiver (136) is used to produce error signals (214, 216) used in correcting the I and Q quadrature signals (206, 208).

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