Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate
2005-12-20
2005-12-20
Choe, Henry (Department: 2817)
Amplifiers
Modulator-demodulator-type amplifier
C330S251000
Reexamination Certificate
active
06977546
ABSTRACT:
A high efficiency, low distortion switching mode power amplifier for telecommunication applications includes an analog to binary digital converter and a class S amplifier terminated by an output filter/matching network capable of operation over one or more frequency bands. The modulator may be connected to the class S amplifier with a fiber optic link. This construction can provide a low-distortion connection to remote antennas. Multiple modulators and amplifiers can be multiplexed over the fiber link to support a multiple sector antenna on a cell site or multiple transmitter elements on a phased array antenna.
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Bethards Charles V.
Choe Henry
Simon Fraser University
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