Bandpass delta-sigma class-S amplifier |
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| Authors: | Iwamoto M Jayaraman A Hanington G Chen PF Bellora A Thornton W Larson LE Asbeck PM |
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| Affiliation: | Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA; |
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| 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 |
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