A 10Â GHz wideband VCO with low KVCO variation

This paper presents a novel topology for a 10 GHz voltage controlled oscillator (VCO). The design uses a differential delay cell architecture with four stages. It achieves a wide frequency range of (2-10) GHz and a maximum KVCO variation of 2.5 by using a voltage controlled resistor (VCR) that has a programmable size to reduce the impact of temperature and process corners variations. The design uses a 1 V supply and consumes a maximum power of 18 mW. It was extracted and simulated in 90 nm CMOS technology.