Pulse or digital communications – Transmitters – Antinoise or distortion
Reexamination Certificate
2011-01-04
2011-01-04
Tse, Young T. (Department: 2611)
Pulse or digital communications
Transmitters
Antinoise or distortion
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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Anderson George C.
Korneluk Jose E.
Raven Gregory S.
Chen Sylvia
Garrett Scott M.
Motorola Mobility, Inc.
Tse Young T.
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