Ebrahimi, A.Yaghmaee, P.2014-09-042014-09-042014Journal of Circuits, Systems and Computers, 2014; 23(1):1450003-1-1450003-120218-12661793-6454http://hdl.handle.net/2440/84945This paper represents a new enhanced Colpitts oscillator, which is designed based on gm-boosting of a conventional Colpitts oscillator. The proposed topology increases the negative resistant and enhances the start-up difficulty of the conventional Colpitts oscillator. This enables the Colpitts oscillator to operate in low-power consumption. Moreover, the differential and balanced structure helps limit even-order harmonics and degrades the common mode noise effects in output. The proposed circuit is designed using 0.18 μm technology and is simulated under 1.8 V supply voltage in advanced design system (ADS). Simulations show the output phase noise of -140 dBc/Hz at 1 MHz offset frequency when the operating frequency is 1 GHz.enCopyright status unknownColpitts oscillator; gm-boosting; oscillation frequency; phase noiseJournal article002013514610.1142/S02181266145000300003312825000032-s2.0-8489373222216259