Telecommunications – Transmitter and receiver at separate stations – Distortion – noise – or other interference prevention,...
Reexamination Certificate
2004-10-05
2009-08-18
Maung, Nay A (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Distortion, noise, or other interference prevention,...
C455S272000, C455S273000, C455S275000, C455S276100
Reexamination Certificate
active
07577403
ABSTRACT:
In one-tuner smart antennas, a representation of the antenna element wideband signal is correlated with a representation of the smart antenna output signal to give a measure of the selected channel bandpass power and desired signal power. Since only signals in the selected channel bandpass of the wideband antenna signals can be correlated with signals in the selected channel, the correlator allows only the selected channel bandpass components of the wideband antenna input signal to contribute to the correlator output. This eliminates the influence of adjacent channels/bands signals and prevents capture by strong adjacent signals. As the smart antenna adapts and reduces the selected channel bandpass interference, the measure becomes that of the desired signal power. The present invention reduces the distortion and capture of the antenna branch amplitude limiter for the weight calculation, power detection of the input power and AGC of an antenna element.
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Jones Allston L.
Maung Nay A
Nguyen Tuan H
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