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  4. A high-performance CMOS voltage-controlled oscillator for ultra-low-voltage operations
 
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A high-performance CMOS voltage-controlled oscillator for ultra-low-voltage operations

Journal
IEEE Transactions on Microwave Theory and Techniques
Journal Volume
55
Journal Issue
3
Pages
467-473
Date Issued
2007
Author(s)
Hsieh, H.-H.
LIANG-HUNG LU  
DOI
10.1109/TMTT.2006.891471
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/498220
https://www.scopus.com/inward/record.uri?eid=2-s2.0-33847793479&doi=10.1109%2fTMTT.2006.891471&partnerID=40&md5=edc3ee4403f7a3b2d288242845fa5315
Abstract
In this paper, a novel circuit topology of voltage-controlled oscillators (VCOs) suitable for ultra-low-voltage operations is presented. By utilizing the capacitive feedback and the forward-body-bias (FBB) technique, the proposed VCO can operate at reduced supply voltage and power consumption while maintaining remarkable circuit performance in terms of phase noise, tuning range, and output swing. Using a standard 0.18-μm CMOS process, a 5.6-GHz VCO is designed and fabricated for demonstration. Consuming a dc power of 3 mW from a 0.6-V supply voltage, the VCO exhibits a frequency tuning range of 8.1% and a phase noise of -118 dBc/Hz at 1-MHz offset frequency. With an FBB for the cross-coupled transistors, the fabricated circuit can operate at a supply voltage as low as 0.4 V. The measured tuning range and phase noise are 6.4% and -114 dBc/Hz, respectively. © 2007 IEEE.
Subjects
Capacitive feedback; Forward body bias (FBB); Ultra-low power; Ultra-low voltage; Voltage-controlled oscillators (VCOS)
Other Subjects
Capacitive feedback; Forward body bias (FBB); Ultra-low power; Ultra-low voltage; Voltage-controlled oscillators (VCOS); Capacitance; CMOS integrated circuits; Feedback; Phase noise; Topology; Tuning; Voltage control; Oscillators (electronic)
Type
journal article

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