Title :
A 1.5–3.0GHz wideband VCO with low gain variation
Author :
Weng, Yinfei ; Gao, Haijun ; Sun, Lingling
Author_Institution :
Key Lab. for RF Circuits & Syst. of Minist. of Educ., Hangzhou Dianzi Univ., Hangzhou, China
Abstract :
A wideband LC Voltage Control Oscillator (VCO) implemented on SMIC 65nm CMOS process is presented. The proposed VCO has a low gain variation by using the improved capacitor bank technology. In order to reduce the phase noise caused by the tail current and make the wave form more symmetry, a complementary structure without the tail current is adopted. The testing results show that the VCO has the tuning range of 66.7% from 1.511GHz to 3.057GHz; the gain variation is 49.5%. The phase noise of the output ranges from -115.1dBc/Hz to -120.3dBc/Hz at 1 MHz offset. The power dissipation is 1.02mW under 1.2V power supply. The whole layout occupies 0.58×0.67 mm2.
Keywords :
CMOS integrated circuits; capacitors; low-power electronics; phase noise; voltage-controlled oscillators; SMIC 65nm CMOS process; capacitor bank technology; frequency 1 MHz; frequency 1.5 GHz to 3 GHz; frequency 1.511 GHz to 3.057 GHz; phase noise; power 1.02 mW; power dissipation; size 65 nm; voltage 1.2 V; wave form; wideband LC voltage control oscillator; wideband VCO; Capacitors; Phase noise; Tuning; Voltage-controlled oscillators; Wideband; CMOS; low gain variation; phase noise; wideband VCO;
Conference_Titel :
Electrical Design of Advanced Packaging and Systems Symposium (EDAPS), 2011 IEEE
Conference_Location :
Hanzhou
Print_ISBN :
978-1-4673-2288-1
Electronic_ISBN :
2151-1225
DOI :
10.1109/EDAPS.2011.6213730
