Pulse or digital communications – Transmitters – Quadrature amplitude modulation
Patent
1994-09-14
1996-06-25
Chin, Stephen
Pulse or digital communications
Transmitters
Quadrature amplitude modulation
375271, 375302, 332103, H04L 2736
Patent
active
055307221
ABSTRACT:
A quadrature modulator for generation of complex modulated signals includes a unique pair of balanced, low-pass filters which, through a switching arrangement for switching into and out of the circuit distributed RC line sections and corresponding ground resistances are able to redress problems associated with manufacturing tolerances.
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Chin Stephen
Ericsson - GE Mobile Communications Inc.
Kim Kevin
LandOfFree
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