Integrated Class C-VCO — Mixer for 2.45 GHz transmitter in 180nm CMOS technology

Abstract

This paper presents on the Up-conversion mixer and Class-C CMOS LC VCO which operates at 2.45 GHz designed using 180 nm CMOS RF Technology. Voltage Controlled Oscillator, VCO combined with mixer design and achieves phase noise of −119 dBc/Hz and −131 dBc/Hz at 1 MHz and 3 MHz offset respectively. The system consumes 2.04 mW from 1.2 V supply. The measured Figure of Merit (FoM) reaches 182.08 dBc/Hz at 1 MHz offset. The passive mixer recorded third-order input intercept point (IIP3) of 13.28 dBm and 1-dB compression point (P1dB) of 5.17 dBm. This mixer design generates a stable matching at −23.91 dB and achieves a good port to port isolation of −61 dB.