Pulse or digital communications – Transmitters – Antinoise or distortion
Reexamination Certificate
2007-04-16
2010-06-22
Deppe, Betsy L (Department: 2611)
Pulse or digital communications
Transmitters
Antinoise or distortion
C375S300000, C375S302000
Reexamination Certificate
active
07742541
ABSTRACT:
A compact transmission circuit for outputting a highly linear transmission signal regardless of the output power level and operating at a high efficiency is provided. A signal generation section11generates an amplitude signal and quadrature data based on input data. A calculation section21calculates using the amplitude signal and the quadrature data to output a discrete value having a level discrete at every predetermine time period, and first and second phase signals. An amplitude amplification section17outputs a voltage controlled in accordance with the discrete value. Angular modulation sections13and14angular-modulate the phase signals and output first and second angle-modulated signals. Amplitude modulation sections15and16amplitude-modulate the angle-modulated signals with the voltage from the amplitude amplification section17and output first and second modulated signals. A combining section18combines the first and second modulated signals and outputs a transmission signal.
REFERENCES:
patent: 5901346 (1999-05-01), Stengel et al.
patent: 6078628 (2000-06-01), Griffith et al.
patent: 6737914 (2004-05-01), Gu
patent: 7260368 (2007-08-01), Blumer
patent: 2004/0101065 (2004-05-01), Hagh et al.
patent: 2004/0185805 (2004-09-01), Kim et al.
patent: 05-037263 (1993-02-01), None
Ishida Kaoru
Matsuura Toru
Deppe Betsy L
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
LandOfFree
Transmission circuit, and communication apparatus using the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmission circuit, and communication apparatus using the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmission circuit, and communication apparatus using the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4248951