Based on analysis of traditional voltage controlled oscillators(VCOs)
a new kind of VCO employing high Q microelectromechanical systems(MEMS)-based variable capacitor with merits of wide tuning range
low phase noise
small size
low power consumption is presented in this article.Its tuning range reaches 4.58% from 2.320 GHz to 2.430 GHz when tuning voltage is changed from 0 to 5 V
which overmatches that of a traditional one.Finally
its performance is validated with a standard symmetrical LC circuit topology with negative resistance.