Telecommunications – Transmitter – Amplitude modulation
Reexamination Certificate
2007-07-31
2007-07-31
Nguyen, Duc (Department: 2618)
Telecommunications
Transmitter
Amplitude modulation
C455S110000, C455S102000, C330S010000, C330S149000
Reexamination Certificate
active
10886371
ABSTRACT:
The amplitude modulator comprises: an angle modulator for angle-modulating a phase signal to be inputted; a waveform shaping means in which, (1) when the magnitude of an amplitude signal to be inputted becomes smaller than a first prescribed value, a waveform of the amplitude signal is shaped so that the magnitude of the amplitude signal of the portion which becomes small becomes the first prescribed value; and/or (2) the waveform shaping means in which, when the magnitude of the amplitude signal to be inputted becomes larger than the second prescribed value which is larger than the first prescribed value, the waveform of the amplitude signal is shaped so that the magnitude of the amplitude signal of the portion which becomes larger becomes the second prescribed value; and an amplitude modulator for amplitude modulating the signal of the output of the angle modulator by the signal of the output of the waveform shaping means.
REFERENCES:
patent: 5142240 (1992-08-01), Isota et al.
patent: 5751705 (1998-05-01), Sato
patent: 5828206 (1998-10-01), Hosono et al.
patent: 6201441 (2001-03-01), Suematsu et al.
patent: 6242975 (2001-06-01), Eidson et al.
patent: 6404823 (2002-06-01), Grange et al.
patent: 6411655 (2002-06-01), Holden et al.
patent: 6445249 (2002-09-01), Khan et al.
patent: 6714071 (2004-03-01), Page
patent: 6844776 (2005-01-01), Schell et al.
patent: 7023897 (2006-04-01), Kurihara
patent: 7058373 (2006-06-01), Grigore
patent: 7091772 (2006-08-01), Friedel et al.
patent: 7092683 (2006-08-01), Tanaka et al.
patent: 9-18451 (1997-01-01), None
D. Rudolph, “Out-of-Band Emissions of Digital Transmissions Using Kahn EER Technique”, IEEE Transactions on Microwave Theory and Techniques, vol. 50, No. 8, pp. 1979-1983, Aug. 2002.
Adachi Hisashi
Matsuura Toru
Udagawa Masaharu
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