Quadrature amplitude modulation wave demodulator provided with band-pass filters for fixed equalizer
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United States of America Patent
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Oct 15, 1991
Grant Date -
N/A
app pub date -
Jun 20, 1990
filing date -
Jun 22, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A quadrature amplitude modulation wave demodulator which includes a fixed equalizer having a first band-pass filter applied with a quadrature amplitude modulation wave reception signal for outputting an in-phase component with respect to a carrier wave for the reception signal, and a second band-pass filter applied with the reception signal for outputting a quadrature component with respect to the carrier wave for the reception signal. There is provided a vector multiplication section for performing vector multiplication between one vector having outputs of the first and second band-pass filters as two components, and another vector having two reference carrier waves in quadrature to each other as two components.
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