Telecommunications – Receiver or analog modulated signal frequency converter – With particular receiver circuit
Patent
1993-08-09
1995-08-01
Urban, Edward F.
Telecommunications
Receiver or analog modulated signal frequency converter
With particular receiver circuit
330 10, 330251, 455312, H03F 338
Patent
active
054386942
ABSTRACT:
Pulsewidth-modulated amplifier (100) includes a controller (102) which provides for a set of compensated signals (114, 158 and 160). The compensated signals are used for driving a speaker (136). Controller (100) includes a storage area for storing distortion characteristics for the amplifier for a predetermined operational frequency range. The compensated drive signals (114, 158 and 160) help compensate for the electrical non-linear distortions that occur in amplifier (100) and thereby help reduce the output distortion of amplifier (100).
REFERENCES:
patent: 4427952 (1984-01-01), Zumsteg
patent: 4454483 (1984-06-01), Baylor
patent: 4628529 (1986-12-01), Borth et al.
patent: 4630305 (1986-12-01), Borth et al.
patent: 4949048 (1990-08-01), Tokumo et al.
patent: 4967165 (1990-10-01), Lee et al.
patent: 5115205 (1992-05-01), Holmes, Jr.
patent: 5126684 (1992-06-01), Solomon
Muri David L.
Stengel Robert E.
Hernandez Pedro P.
Motorola Inc.
Pham Chi H.
Urban Edward F.
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