VCO CMOS de bajo ruido a 10 GHz en tecnología SiGe de 0.4μm

Abstract

A 10 GHz CMOS VCO design in 0.4μm SiGe technology is presented in this paper, providing a good compromise between power consumption, noise, tunning range and chip area. This design is intended to be used in a frequency synthesizer for the 5150-5250MHz band in a direct conversion system in which would run at double frequency to avoid adverse effects such as frequency pulling and LO leakage. The phase noise at 1-MHz frequency offset from the carrier is below -109dBc/Hz, with a maximum power consumption of 22.6mW. The tunning range under the presented load conditions is about 6.3%, and the VCO itself occupies an area of only 0.075mm2.