Title :
A 2.34–3.29GHz CMOS LC VCO with low phase noise and low power
Author :
Hao Wang ; Xiaole Cui ; Chung Len Lee ; Zuolin Cheng
Author_Institution :
Key Lab. of Integrated Microsyst., Peking Univ., Shenzhen, China
Abstract :
A low phase noise wideband LC VCO is designed and presented. In this VCO, a symmetrical LC tank with proper arrangement of varactors is used to extend its tuning range. Results from the post layout simulation show that the VCO achieved a wide tuning range from 2.34GHz to 3.29GHz. Moreover, a noise cancellation technique is adopted to achieve better phase noise performance. The VCO exhibits that phase noise is lower than -120.1dBc/Hz at 1-MHz offset frequency. The circuit consumes 2.38mA of power from a 1.8V supply.
Keywords :
CMOS integrated circuits; LC circuits; UHF oscillators; low-power electronics; microwave oscillators; phase noise; varactors; voltage-controlled oscillators; current 2.38 mA; frequency 2.34 GHz to 3.29 GHz; low phase noise wideband LC VCO; noise cancellation technique; phase noise performance; symmetrical LC tank; varactors; voltage 1.8 V; Frequency dependence; Logic gates; Transistors; Tuning; Varactors; Voltage-controlled oscillators; LC VCO; phase noise; power; tuning range; wideband;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2014 IEEE International Conference on
DOI :
10.1109/EDSSC.2014.7061141
