Title :
Distortionless RF pulse width modulation
Author :
Wagh, Poojan ; Midya, Pallab ; Rakers, Patrick
Author_Institution :
Integrated Circuit Technol. Res. Lab., Motorola Labs., Schaumburg, IL, USA
Abstract :
A method is presented to synthesize a switching signal which linearly encodes a complex-modulated RF signal to an RF carrier frequency. The switching distortion associated with this method is limited to high-pass components out of band. Consequently, the switching signal may be filtered after high efficiency amplification to produce the linear RF modulation. The method requires a switching frequency slightly higher than the highest frequency in the band of interest.
Keywords :
pulse width modulation; signal synthesis; RF signal; distortionless RF pulse width modulation; linear modulation; out-of-band distortion; switching signal synthesis; Baseband; Displays; Distortion; Nonlinear filters; Pulse modulation; Pulse width modulation; RF signals; Radio frequency; Space vector pulse width modulation; Transmitters;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1187172
