A low phase noise and low power CMOS VCO with transformer feedback

2009 ◽  
Author(s):  
Meng-Ting Hsu ◽  
Ying-Hsiang Huang
Keyword(s):  
Low Power ◽  
Phase Noise ◽  
Low Power Cmos ◽  
Transformer Feedback ◽  
Low Phase Noise

Design of 5 GHz low-power CMOS LC VCO based on complementary cross-coupled topology with modified tail current-shaping technique

2014 ◽  
Vol 6 (6) ◽  
pp. 573-580 ◽  
Author(s):  
Meng-Ting Hsu ◽  
Po-Hung Chen ◽  
Yao-Yen Lee
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Phase Noise ◽  
Supply Voltage ◽  
Voltage Controlled Oscillator ◽  
Measurement Results ◽  
Low Power Cmos ◽  
5 Ghz ◽  
Low Phase Noise ◽  
Manufacture Company

In this paper, a low-power CMOS LC voltage-controlled oscillator (VCO) with body-biasing and low-phase noise with Q-enhancement techniques is presented. A self-body biased circuit is introduced that can reduce power consumption. Some derivations of the Q-enhancement and how to improve the phase noise of the circuit are also discussed. This chip is implemented by the Taiwan Semiconductor Manufacture Company 0.18 µm 1P6M process. The measurement results exhibit a tuning range of 14.7% from 4.92 to 5.7 GHz at a supply voltage of 1.4 V. The power consumption of the core circuit and figure of merit are 2.5 mW and −188.6 dBc/Hz. The phase noise is −118 dBc/Hz@1 MHz at an operation frequency of 4.94 GHz.

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