Wide tuning range voltage controlled oscillator (VCO) with minimized phase noise variation in nanoscale CMOS technology

2015 ◽  
Author(s):  
Mohammed Aqeeli ◽  
Abdullah Alburaikan ◽  
Xianjun Huang ◽  
Zhirun Hu
Keyword(s):  
Phase Noise ◽  
Tuning Range ◽  
Cmos Technology ◽  
Voltage Controlled Oscillator ◽  
Wide Tuning Range ◽  
Nanoscale Cmos

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.

A Low Phase Noise, Wide Tuning Range 20GHz Magnetic-Coupled Hartley-VCO in a 28nm CMOS Technology

2019 ◽  
Author(s):  
Daniel Reiter ◽  
Hao Li ◽  
Herbert Knapp ◽  
Jonas Kammere ◽  
Soran Majied ◽  
...  
Keyword(s):  
Phase Noise ◽  
Tuning Range ◽  
Cmos Technology ◽  
Wide Tuning Range ◽  
Low Phase Noise

A FULLY INTEGRATED MULTI-BAND LCVCO BASED ON CMOS TECHNOLOGY

2010 ◽  
Vol 19 (06) ◽  
pp. 1299-1305 ◽  
Author(s):  
XUEPO MA ◽  
WEI ZHANG ◽  
YANG LIU
Keyword(s):  
Phase Noise ◽  
Tuning Range ◽  
Low Frequency ◽  
Cmos Technology ◽  
Frequency Noise ◽  
Voltage Controlled Oscillator ◽  
Worst Case ◽  
Fully Integrated ◽  
Phase Noise Performance ◽  
Multi Band

In this paper, a cross-coupled complementary inductance–capacitance voltage controlled oscillator (LCVCO) with low phase noise and wide tuning range is presented. It has a multi-band topology and was fabricated with RF CMOS technology. For the purpose of lowering the K VCO and reducing the nonlinearities of varactors, the sizes of the varactors are set small. Also noise filtering technique is adopted to minimize up-conversion of the low frequency noise as well as down-conversion of the high frequency noise, thus the phase noise performance of the VCO is greatly improved. Simulation and experimental results indicate that the LCVCO displays a phase noise of -126.1 dBc at 900 kHz offset in worst case with a tuning range from 1.76 to 1.96 GHz.

scholarly journals A LOW PHASE NOISE, POWER EFFICIENT VOLTAGE CONTROLLED OSCILLATOR USING 0.18-μM CMOS TECHNOLOGY

2014 ◽  
pp. 256-259
Author(s):  
AJIT SAMASGIKAR
Keyword(s):  
Power Consumption ◽  
Phase Noise ◽  
Tuning Range ◽  
Supply Voltage ◽  
Cmos Technology ◽  
Noise Power ◽  
Voltage Controlled Oscillator ◽  
Power Efficient ◽  
Sustained Oscillations ◽  
Low Phase Noise

A low phase noise, power efficient VCO using UMC 0.18μm CMOS technology has been proposed in this paper. The proposed VCO has a tuning range of 9.71GHz to 9.9GHz, with a phase noise of -79.88 dBc/Hz @ 600kHz offset. The Vtune ranging between 1V - 1.5V generates sustained oscillations. The maximum power consumption of the VCO is 11.9mW using a supply voltage of 1.8V with ±10% variation.

Design and Optimization of Differential Ring Oscillator for IR-UWB Applications in 0.18 μm CMOS Technology

2017 ◽  
Vol 26 (05) ◽  
pp. 1750080 ◽  
Author(s):  
Nadia Gargouri ◽  
Dalenda Ben Issa ◽  
Zied Sakka ◽  
Abdennaceur Kachouri ◽  
Mounir Samet
Keyword(s):  
Phase Noise ◽  
Tuning Range ◽  
Supply Voltage ◽  
Optimization Method ◽  
Cmos Technology ◽  
Ring Oscillator ◽  
Ultra Wideband ◽  
Voltage Controlled Oscillator ◽  
Component Size ◽  
Uwb Applications

This study presents a two-stage ring voltage-controlled oscillator (VCO) for use in impulse-radio ultra-wideband (IR-UWB) applications. A systematic and efficient graphical optimization method was employed to find the optimal dimensions of the VCO which give a best performance. A good agreement was observed between the desired specifications and simulation results with regard to the optimum component size of the VCO circuit. The operation range of the VCO was extended to cover an ultra-wide tuning range of 176.6%. The phase noise was [Formula: see text]107.1[Formula: see text]dBc/Hz at 10[Formula: see text]MHz offset frequency from a carrier frequency of 4[Formula: see text]GHz. The power consumption of VCO was 7.41[Formula: see text]mW from a 1.8[Formula: see text]V supply voltage. A large tuning range, low power, and appropriate phase noise were obtained with the optimum components size obtained through the optimization method.

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