Transmission apparatus

Details Transmission apparatus Transmission apparatus

2006-11-07

2006-11-07

Kumar, Pankaj (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

Reexamination Certificate

active

07133464

ABSTRACT:
A transmission apparatus includes a filter, multiplier, and controller. The filter reduces leakage power outside the transmission signal band. In the filter, a first attenuation amount more than a predetermined amount or a second attenuation amount not more than the predetermined amount is selectively set in a range higher than the transmission signal band. The multiplier modulates the transmission signal output from the filter. The controller sets one of the first and second attenuation amounts in the filter in accordance with the use situation of a band adjacent to the transmission signal band.

REFERENCES:
patent: 5752171 (1998-05-01), Akiya
patent: 6178162 (2001-01-01), Dal Farra et al.
patent: 6262637 (2001-07-01), Bradley et al.
patent: 6275103 (2001-08-01), Maniwa
patent: 6356746 (2002-03-01), Katayama
patent: 6865216 (2005-03-01), Beamish et al.
patent: 6-152553 (1994-05-01), None
Japanese Office Action issued Sep. 3, 2002 (w/ English translation of relevant portion).

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