POWER MODULATOR AND METHOD OF OPERATING A POWER MODULATOR

摘要

To address the need for a power modulator that can efficiently operate within a wideband, high-speed communication system, a method and apparatus for power modulation is provided herein. In accordance with the preferred embodiment of the present invention an envelope reference signal is filtered by a device (207)in such a way that the bandwidth is reduced while keeping the instantaneous level of the filtered signal greater than the unfiltered envelope level. Because the bandwidth of the envelope signal is reduced, efficient operation of the switching modulator (105) can be achieved within wideband, high-speed communication systems.