A novel VSWR-protected and controllable CMOS class E power amplifier for Bluetooth applications

Chen Wei, Lin Wei, Huang Shizhen
2009 2009 4th IEEE Conference on Industrial Electronics and Applications  
This paper describes the design of a differential class-E PA for Bluetooth applications in 0.18µm CMOS technology with load mismatch protection and power control features. The breakdown induced by load mismatch can be avoided by attenuating the RF power to the final stage during over voltage conditions. Power control is realized by means of "open loop" techniques to regulate the power supply voltage, and a novel controllable bias network with temperature compensated is proposed, which allows a
more » ... ed, which allows a moderate power control slope (dB/V) to be achieved. Post-layout Simulation results show that the level of output power can be controlled in 2dBm steps; especially the output power in every step is quite insensitive to temperature variations. Index Terms-Power amplifier, class E, VCWR. All authors are with the Fujian
doi:10.1109/iciea.2009.5138240 fatcat:gcwbhe2vxrdbvewn4faurnsoze