High-performance differential VCO based on Armstrong oscillator topology

N.T. Tchamov, T. Niemi, N. Mikkola
2001 IEEE Journal of Solid-State Circuits  
A symmetric topology based on the classical Armstrong's oscillator was developed and implemented as a fully monolithic voltage-controlled oscillator using ST Microelectronics' 0.35-m BiCMOS process ( = 35 GHz). It oscillates at a center frequency of 4.4 GHz, has a tuning range of 1.0 GHz, delivers a single-ended output power of 6.5 dBm, and the minimum current consumption is less than 4 mA from a 2.5-V power supply. The phase noise is 125 dBc/Hz, measured at 3-MHz offset. Index Terms-BiCMOS
more » ... ex Terms-BiCMOS technology, multi-GHz VCO, wide tuning range.
doi:10.1109/4.896239 fatcat:3bkmobpigfgbbeahuxse2tnegu