Pulse or digital communications – Transmitters – Antinoise or distortion
Reexamination Certificate
2008-07-15
2008-07-15
Fan, Chieh M. (Department: 2611)
Pulse or digital communications
Transmitters
Antinoise or distortion
C375S376000, C375S326000, C375S374000, C370S350000, C370S355000, C455S084000, C455S126000
Reexamination Certificate
active
10685018
ABSTRACT:
The present invention is directed to an adaptive phase controller employing a threshold level and a method of controlling a phase. In one embodiment, the adaptive phase controller includes a comparator configured to receive a comparison signal representing a phase and to provide a vernier signal based on comparing first and second samples of the comparison signal when the comparison signal is below the threshold level. Additionally, the adaptive phase controller also includes an adder/decoder coupled to the comparator and configured to adjust a current number corresponding to the phase based on the vernier signal.
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Joel L. Dawson “Automatic Phase Alignment for High Bandwidth Cartesian Feedback Power Amplifiers” IEEE; 2000; pp. 71-74.
Inventor: Erik B. Busking; U.S. Appl. No. 10/442,623 entitled “A Vector Monitor, Related Method of Controlling a Transmitter Employing the Same” filed May 21, 2003.
Inventors: Yanling Sun and Erik B. Busking; U.S. Appl. No. 10/159,651 entitled “Group Delay Precompensator for Broadband Radio Frequency Transmitter and Method of Operating the Same” filed May 31, 2002.
Sun Yanling
Tao Xiao-Jiao
Agere Systems Inc.
Puente Eva
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