Introduction to the special issue on Radio Frequency Integrated Circuits (RFIC) design techniques

Miniaturization and cost have driven CMOS technologies as attractive candidates for the design of RF integrated circuits. Furthermore, the scaling of these technologies down to the nanometric regime has pushed their frequencies of operation well into the millimeter-wave region. Currently, CMOS coexists with other highperformance technologies, like SiGe, providing the RF designer with a wide catalog of alternatives for the optimal system design considering a variety of aspects like size, cost, power consumption, performance, etc.