Phase modulating apparatus, communication device, mobile...

Details Phase modulating apparatus, communication device, mobile... Phase modulating apparatus, communication device, mobile...

2005-12-22

2008-10-28

Pascal, Robert J. (Department: 2817)

Modulators

Phase modulator

C332S128000, C375S302000, C331S023000

Reexamination Certificate

active

07443261

ABSTRACT:
A multimode-based phase modulating apparatus capable of reducing the degradation of modulation precision and suppressing the unnecessary power consumption. This apparatus has a switch for switching the modulation modes of a PLL circuit between a single-point modulation and a double-point modulation. In a case of a narrow modulation bandwidth, the switch is turned off to cease a second digital baseband signal, thereby causing the PLL circuit to perform the single-point modulation in which only a first digital baseband signal from a frequency division rate generating part is used for the modulation. Contrarily, in a case of a wide modulation bandwidth, the switch is turned on, thereby performing the double-point modulation using both the first digital baseband signal and the second digital baseband signal.

REFERENCES:
patent: 6211747 (2001-04-01), Trichet et al.
patent: 6282249 (2001-08-01), Tomesen et al.
patent: 6515553 (2003-02-01), Filiol et al.
patent: 7154347 (2006-12-01), Grewing et al.
patent: 2002/0003481 (2002-01-01), Kantola et al.
patent: 2002/0160804 (2002-10-01), Bogner et al.
patent: 2004/0196924 (2004-10-01), Wilson
patent: 04358415 (1992-12-01), None
patent: WO 3032493 (2003-04-01), None
PCT International Search Report dated Feb. 28, 2006.

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