作者: Richard C. Looke , David F. Sorrells , Gregory S. Rawlins , Charley D. Moses , Michael J. Bultman
DOI:
关键词: Electronic engineering 、 Sampling (signal processing) 、 Band-pass filter 、 Transmitter 、 Engineering 、 DC bias 、 Transceiver 、 Up conversion 、 Voltage 、 Baseband
摘要: A balanced transmitter up-converts a baseband signal directly from baseband-to-RF. The up-conversion process is sufficiently linear that no IF processing required, even in communications applications have stringent requirements on spectral growth. In operation, the modulator sub-harmonically samples and differential manner, resulting harmonically rich signal. contains multiple harmonic images repeat at multiples of sampling frequency, where each necessary information to reconstruct performed according first second control signals are phase shifted with respect other. embodiments invention, pulse widths (or apertures) operate improve energy transfer desired bandpass filter can then be utilized select interest modules perform configured either series or shunt configuration. DC offset voltages minimized between minimize prevent carrier insertion into images.