https://scholars.lib.ntu.edu.tw/handle/123456789/498220
Title: | A high-performance CMOS voltage-controlled oscillator for ultra-low-voltage operations | Authors: | Hsieh, H.-H. LIANG-HUNG LU |
Keywords: | Capacitive feedback; Forward body bias (FBB); Ultra-low power; Ultra-low voltage; Voltage-controlled oscillators (VCOS) | Issue Date: | 2007 | Journal Volume: | 55 | Journal Issue: | 3 | Start page/Pages: | 467-473 | Source: | IEEE Transactions on Microwave Theory and Techniques | 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. |
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 |
ISSN: | 00189480 | DOI: | 10.1109/TMTT.2006.891471 | SDG/Keyword: | 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) |
Appears in Collections: | 電機工程學系 |
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