A novel 1V-supply, low power, wide tuning range voltage controlled oscillator implemented in 0.18μm CMOS technology

2005 ◽  
Author(s):  
Z. Toprak ◽  
Y. Leblebici
Keyword(s):  
Low Power ◽  
Tuning Range ◽  
Cmos Technology ◽  
Voltage Controlled Oscillator ◽  
Wide Tuning Range

A VERY LOW NOISE WIDEBAND CLASS-C CMOS LC VCO

2012 ◽  
Vol 21 (04) ◽  
pp. 1250033 ◽  
Author(s):  
FATEMEH ATAEI ◽  
MOHAMMAD YAVARI
Keyword(s):  
Phase Noise ◽  
Tuning Range ◽  
Capacitor Bank ◽  
Cmos Technology ◽  
Low Noise ◽  
Voltage Controlled Oscillator ◽  
Switching Scheme ◽  
Wide Tuning Range ◽  
New Class ◽  
Class C

In this paper, a new class-C voltage-controlled oscillator (VCO) is presented. In the proposed VCO, the tail capacitor of the conventional class-C oscillator is dislocated from the source of the cross-coupled transistors to their gate to achieve a rail-to-rail output swing. This improves the phase noise by 2.9 dB compared to the conventional class-C one. Besides, a new switching scheme is presented in the switched capacitor bank used for coarse tuning of the proposed VCO to lower the on resistance of the switches as well as to reduce the parasitic capacitors. This wide tuning range class-C VCO is designed in a 0.18 μm CMOS technology. It achieves a -125.3 dBc/Hz phase noise at 1 MHz offset from a 2.2 GHz carrier frequency while covering a wide tuning range from 1.82 to 2.65 GHz and consuming 3.5 mW power from a single 0.9 V power supply.

IC design of low power, wide tuning range VCO in 90 nm CMOS technology

2014 ◽  
Vol 35 (12) ◽  
pp. 125013 ◽  
Author(s):  
Zhu Li ◽  
Zhigong Wang ◽  
Zhiqun Li ◽  
Qin Li ◽  
Faen Liu
Keyword(s):  
Low Power ◽  
Tuning Range ◽  
Cmos Technology ◽  
Ic Design ◽  
Wide Tuning Range
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