A comprehensive varactor study for advanced CMOS RFIC design


The key performance index related to RF circuit design for a portfolio of varactor structures, N+/Nwell MOS varactor (N+/NW MOSVAR). P+/Pwell MOSVAR (P+/PW MOSVAR) and junction varactor (JVAC) were studied using advanced 0.18/spl mu/m to 90nm RF-CMOS technologies. The engineering and trade-offs for quality factor (Q-factor), tuning ratio (TR = C/sub max… (More)


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