Pulse or digital communications – Transmitters
Reexamination Certificate
2006-09-14
2009-08-11
Bayard, Emmanuel (Department: 2611)
Pulse or digital communications
Transmitters
C375S298000, C375S300000, C375S302000
Reexamination Certificate
active
07573949
ABSTRACT:
Provided is a transmitter circuit capable of outputting a transmission signal having high accuracy irrespective of bandwidth and operating with high efficiency. In the transmitter circuit1, a delay detection section18selects two observation points at which angle change amounts of the complex envelope are larger than a predetermined angle threshold value and selects, as a singular point, an observation point at which a magnitude of the complex envelope is larger than that at one of the two observation points. Based on a positional relationship among the singular point, a preceding symbol, and a succeeding symbol, a relationship between delay times of the amplitude signal and the phase signal is detected. Based on the relationship between delay times of the amplitude signal and the phase signal, a delay setting section19sets a delay time in a delay adjuster12. Based on the set delay time, the delay adjuster12adjusts the delay times of the amplitude signal and the phase signal.
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Adachi Hisashi
Matsuura Toru
Bayard Emmanuel
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
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