An ultra-compact SP4T cellular antenna switch in 3.3V CMOS thick-film SOI

Abstract

This paper presents design and characterization results of an ultra-compact SP4T antenna switch fabricated in 3.3V CMOS thick-film SOI. Through “layout-driven” circuit design a small die size of 0.53 mm2 was achieved for a fully integrated switch die containing RF-section, I/O pads, ESD, decoder, level shifters and negative vss charge pump.