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On-Wafer Measurement of a Silicon-Based CMOS VCO at 324 GHzThe world s first silicon-based complementary metal oxide/semiconductor (CMOS) integrated-circuit voltage-controlled oscillator (VCO) operating in a frequency range around 324 GHz has been built and tested. Concomitantly, equipment for measuring the performance of this oscillator has been built and tested. These accomplishments are intermediate steps in a continuing effort to develop low-power-consumption, low-phase-noise, electronically tunable signal generators as local oscillators for heterodyne receivers in submillimeter-wavelength (frequency > 300 GHz) scientific instruments and imaging systems. Submillimeter-wavelength imaging systems are of special interest for military and law-enforcement use because they could, potentially, be used to detect weapons hidden behind clothing and other opaque dielectric materials. In comparison with prior submillimeter- wavelength signal generators, CMOS VCOs offer significant potential advantages, including great reductions in power consumption, mass, size, and complexity. In addition, there is potential for on-chip integration of CMOS VCOs with other CMOS integrated circuitry, including phase-lock loops, analog- to-digital converters, and advanced microprocessors.
Document ID
Acquisition Source
Jet Propulsion Laboratory
Document Type
Other - NASA Tech Brief
Samoska, Lorene
(California Inst. of Tech. Pasadena, CA, United States)
Man Fung, King
(California Inst. of Tech. Pasadena, CA, United States)
Gaier, Todd
(California Inst. of Tech. Pasadena, CA, United States)
Huang, Daquan
(California Univ. Los Angeles, CA, United States)
Larocca, Tim
(California Univ. Los Angeles, CA, United States)
Chang, M. F.
(California Univ. Los Angeles, CA, United States)
Campbell, Richard
(Portland State Univ. OR, United States)
Andrews, Michael
(Cascade Microtech, Inc. Beaverton, OR, United States)
Date Acquired
August 24, 2013
Publication Date
September 1, 2008
Publication Information
Publication: NASA Tech Briefs, September 2008
Subject Category
Man/System Technology And Life Support
Report/Patent Number
Distribution Limits
Public Use Permitted.
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