Modulators – Phase modulator
Reexamination Certificate
2008-07-15
2008-07-15
Pascal, Robert J. (Department: 2817)
Modulators
Phase modulator
C327S161000, C327S234000, C327S244000
Reexamination Certificate
active
07400211
ABSTRACT:
A high speed passband phase modulation apparatus and method are provided. In the phase modulation apparatus, an RF phase shifter modulates a phase of a local signal that is generated in a VCO according to a digital input. The RF phase shifter is controlled by a phase-controlled loop so that a baseband phase shifter is phased locked to a modulation reference signal from the local signal and a reference clock signal according to the digital input. The phase-controlled loop phase-locks using the modulation reference signal so that the phase-modulated signal generated in the RF phase shifter has a phase value according to the digital input.
REFERENCES:
patent: 7319352 (2008-01-01), Scheytt
Kim Seung Woo
Kim Tae Wook
Kim Young Sik
Lee Jae Sup
Lee Jeong Hoon
Goodley James E
Pascal Robert J.
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
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