Title :
Measurement of Bandpass Sigma-Delta Modulator Coding Efficiency and Pulse Transition Frequency for RF Class D Power Amplifier Applications
Author :
Johnson, Thomas ; Sobot, Robert ; Stapleton, Shawn
Author_Institution :
Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC
Abstract :
Measurements of the coding efficiency and average transition frequency of a bandpass ΣΔ modulator pulse train are shown. The parameters are important in RF class D amplifier applications and affect the power efficiency of the amplifier. A fourth order bandpass ΣΔ modulator implemented in a SiGe process is used for experimentation and compared with simulated results.
Keywords :
Ge-Si alloys; frequency measurement; modulation coding; power amplifiers; radiofrequency amplifiers; sigma-delta modulation; RF Class D power amplifier application; SiGe; SiGe process; bandpass sigma-delta modulator; coding efficiency measurement; pulse transition frequency; Delta-sigma modulation; Frequency measurement; Modulation coding; Power amplifiers; Power measurement; Pulse amplifiers; Pulse measurements; Pulse modulation; Radio frequency; Radiofrequency amplifiers; RF power amplifier; bandpass sigma-delta modulation; class D amplifier; coding efficiency;
Conference_Titel :
Electrical and Computer Engineering, 2006. CCECE '06. Canadian Conference on
Conference_Location :
Ottawa, Ont.
Print_ISBN :
1-4244-0038-4
Electronic_ISBN :
1-4244-0038-4
DOI :
10.1109/CCECE.2006.277768
