X-band voltage-controlled oscillator with built-in envelope detection

NCUIR > College of Electrical Engineering & Computer Science > Department of Electrical Engineering > journal & Dissertation > Item 987654321/108560

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/108560

Title:	X-band voltage-controlled oscillator with built-in envelope detection
Authors:	傅家相;Chen, Cheng-Yu;Li, Hsiao-Yun;Fu, Jia-Shiang
Contributors:	資訊電機學院電機工程學系
Keywords:	Amplifiers;built-in self test;envelope detector;voltage-controlled oscillator
Date:	2014-01-01
Issue Date:	2026-04-23 14:55:05 (UTC+8)
Publisher:	John Wiley and Sons Inc.;New York: Blackwell Publishing Ltd
Abstract:	摘要： A wide‐tuning‐range X‐band voltage‐control oscillator (VCO) with built‐in envelope detectors is designed and measured. The VCO is implemented using a 0.18‐μm CMOS technology. The VCO core is composed of a cross‐coupled pair and a parallel‐LC resonator. The variable capacitance is implemented using MOS varactors. Large varactor capacitance and small transistor size are used to reduce the tuning‐range degradation due to the parasitic capacitance of the cross‐coupled pair and buffer amplifier. Each single‐ended output of the differential buffer amplifier is connected to a Greinacher voltage doubler, which serves as an envelope detector that senses the output power of the VCO and translates it into a dc voltage. The chip area of the VCO is 1.25 × 0.6 mm2. The measured frequency tuning range and FoMT (at 1‐MHz offset) are 31.7% and −192.5 dBc/Hz, respectively. The relation between the VCO output power and detector output voltage is characterized. Using the relation, the envelope detectors can be used for real‐time monitoring of the power level at any location in a chip, providing built‐in self‐test capability. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:11–14, 2014 其他題名： Microw. Opt. Technol. Lett 出版者： New York: Blackwell Publishing Ltd 出版日期： 2014-01 出處： Microwave and optical technology letters, 2014-01, Vol.56 (1), p.11-14 資源來源： Wiley Online Library - AutoHoldings Journals 版權： Copyright © 2014 Wiley Periodicals, Inc. 識別號： ISSN: 0895-2477 識別號： EISSN: 1098-2760 識別號： DOI: 10.1002/mop.27985 識別號： CODEN: MOTLEO
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

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