Polar modulator with signed amplitude reducing phase...

Details Polar modulator with signed amplitude reducing phase... Polar modulator with signed amplitude reducing phase...

2011-05-17

2011-05-17

Le, Nhan (Department: 2618)

Telecommunications

Transmitter

Amplitude modulation

C455S126000, C455S205000, C375S300000

Reexamination Certificate

active

07945223

ABSTRACT:
A polar modulator including a signal converter configured to provide a phase signal and an amplitude signal based on at least one received signal is disclosed. A digital-to-analog converter is coupled to the signal converter, the digital-to-analog converter configured to receive an augmented signal, wherein a polarity of the augmented signal is selected to minimize an absolute phase change for sequential signals. A signal mixer is coupled to the digital-to-analog converter to receive an analog signal generated from the augmented signal.

REFERENCES:
patent: 4481672 (1984-11-01), Watkinson
patent: 6956924 (2005-10-01), Linsky et al.
patent: 7180384 (2007-02-01), Efstathiou et al.
patent: 2003/0108112 (2003-06-01), Rudolph et al.
patent: 2005/0191976 (2005-09-01), Shakeshaft et al.
patent: 10112025 (2002-09-01), None
“German Application Serial No. 102008008597.9-31, Non-Final Office Action mailed Feb. 10, 2008”, 8 pgs.

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