Pulse or digital communications – Transmitters – Angle modulation
Reexamination Certificate
2008-01-22
2010-12-07
Burd, Kevin M (Department: 2611)
Pulse or digital communications
Transmitters
Angle modulation
Reexamination Certificate
active
07848455
ABSTRACT:
Provided is a transmission circuit which is capable of compensating for an offset voltage and a sensitivity characteristic of a PA, and operating with low distortion and high efficiency. A regulator18supplies, to a PA201, a voltage which is controlled in accordance with an amplitude signal to which a first offset value has been added. A regulator19supplies, to a PA202, a voltage which is controlled in accordance with an amplitude signal to which a second offset value has been added. The PA201amplifies, in accordance with the voltage supplied from the regulator18, a phase-modulated signal outputted from a phase modulator13. The PA202amplifies, in accordance with the voltage supplied from the regulator19, an output signal of the PA201. A digital block11controls the first and second offset values in accordance with temperature information T measured by a temperature measuring section21.
REFERENCES:
patent: 6242975 (2001-06-01), Eidson et al.
patent: 6998919 (2006-02-01), Gamero et al.
patent: 7496334 (2009-02-01), Saito
patent: 2004/0263245 (2004-12-01), Winter et al.
patent: 2006/0159198 (2006-07-01), Morimoto et al.
Ishida Kaoru
Morimoto Shigeru
Burd Kevin M
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
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