Title :
Bandpass delta-sigma class-S amplifier
Author :
Iwamoto, M. ; Jayaraman, A. ; Hanington, G. ; Chen, P.F. ; Bellora, A. ; Thornton, W. ; Larson, L.E. ; Asbeck, P.M.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
fDate :
6/8/2000 12:00:00 AM
Abstract :
A class-S amplifier with a bandpass delta-sigma modulated input is demonstrated using CMOS devices at 10 MHz. With a two-tone modulated input, third-order intermodulation products below -40 dBc were measured, with an output power of 26 dBm and a drain efficiency of 33%. This new amplifier topology demonstrates promising performance for simultaneously achieving high linearity and efficiency
Keywords :
CMOS analogue integrated circuits; delta-sigma modulation; intermodulation; power amplifiers; 10 MHz; 33 percent; CMOS devices; delta-sigma class-S amplifier; drain efficiency; efficiency; linearity; output power; power amplifiers; third-order intermodulation products; two-tone modulated input;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20000794
