NDLI: A very low phase-noise voltage-controlled-oscillator at X-band

Content Provider	IEEE Xplore Digital Library
Author	Nick, M. Mortazawi, A.
Copyright Year	2011
Description	Author affiliation: Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, 48109, USA (Nick, M.; Mortazawi, A.)
Abstract	An X-band VCO is designed by employing a compact tunable high-Q negative-resistance resonator. The implemented active resonator not only provides a high degree of frequency-selectivity, but also initiates and sustains the oscillations. The loaded-quality-factor of the resonator is 510. As a result, a simple and compact VCO has been designed by eliminating the need for the parallel feedback amplifier and external load coupling network. Therefore, size and DC power consumption are significantly reduced without degrading the phase-noise performance. The fabricated VCO operates at 8.2 GHz with 105 MHz tuning range. It shows a measured phase-noise of −149.5 dBc/Hz at 1 MHz frequency offset, and achieves a figure-of-merit (FOM) value of −211.7 dBc/Hz. To the best of author's knowledge, the VCO presented in this paper achieves the lowest phase-noise and FOM compared to other planar oscillators reported to date.
Starting Page	1
Ending Page	4
File Size	1056838
Page Count	4
File Format	PDF
ISBN	9781612847542
ISSN	0149645X
e-ISBN	9781612847573
e-ISBN	9781612847566
DOI	10.1109/MWSYM.2011.5972905
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resonant frequency Reflection Microstrip Matched filters Phase measurement Resonator filters Power measurement quality factor Active resonator dual-mode resonator elliptic filter oscillator phase noise
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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