Advances in electronics have pushed mankind to create devices, ranging
from - credible gadgets to medical equipment to spacecraft instruments.
More than that, modern society is getting used to--if not dependent
on--the comfort, solutions, and astonishing amount of information
brought by these devices. One ?eld that has continuously bene?tted from
those advances is the radio frequency integrated c- cuit (RFIC) design,
which in its turn has promoted countless bene?ts to the mankind as a
payback. Wireless communications is one prominent example of what the -
vances in electronics have enabled and their consequences to our daily
life. How could anyone back in the eighties think of the possibilities
opened by the wireless local area networks (WLANs) that can be found
today in a host of places, such as public libraries, coffee shops,
trains, to name just a few? How can a youngster, who lives this true
WLAN experience nowadays, imagine a world without it? This book
dealswith the design oflinearCMOS RF PowerAmpli?ers(PAs). The RF PA is a
very important part of the RF transceiver, the device that enables
wireless communications. Two important aspects that are key to keep the
advances in RF PA design at an accelerate pace are treated: ef?ciency
enhancement and frequen- tunable capability. For this purpose, the
design of two different integrated circuits realizedina0.
11µmtechnologyispresented, eachoneaddressingadifferentaspect. With
respect to ef?ciency enhancement, the design of a dynamic supply RF
power ampli?er is treated, making up the material of Chaps. 2 to 4.
