Modulators – Frequency modulator – Including stabilization or alternatively distortion – noise...
Reexamination Certificate
2007-10-02
2007-10-02
Chang, Joseph (Department: 2817)
Modulators
Frequency modulator
Including stabilization or alternatively distortion, noise...
C332S145000, C332S151000
Reexamination Certificate
active
11352244
ABSTRACT:
Provided is a transmission modulation apparatus, using polar modulation of two-point modulation scheme, capable of completing a timing adjustment of a BB phase modulation signal and BB amplitude modulation signal in a short time. A phase modulation section (10) that performs two-point modulation with a PLL circuit is provided with a switch (17) to make the PLL circuit open loop, and when a first delay section (5) corrects the deviation in synchronization between the BB phase modulation signal and BB amplitude modulation signal, the switch (17) is turned off to make the PLL circuit open loop.
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Chang Joseph
Greenblum & Bernstein P.L.C.
Matsushita Electric - Industrial Co., Ltd.
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