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电信和无线电工程
SJR: 0.203 SNIP: 0.44 CiteScore™: 1

ISSN 打印: 0040-2508
ISSN 在线: 1943-6009

卷:
卷 79, 2020 卷 78, 2019 卷 77, 2018 卷 76, 2017 卷 75, 2016 卷 74, 2015 卷 73, 2014 卷 72, 2013 卷 71, 2012 卷 70, 2011 卷 69, 2010 卷 68, 2009 卷 67, 2008 卷 66, 2007 卷 65, 2006 卷 64, 2005 卷 63, 2005 卷 62, 2004 卷 61, 2004 卷 60, 2003 卷 59, 2003 卷 58, 2002 卷 57, 2002 卷 56, 2001 卷 55, 2001 卷 54, 2000 卷 53, 1999 卷 52, 1998 卷 51, 1997

电信和无线电工程

DOI: 10.1615/TelecomRadEng.v72.i16.80
pages 1537-1544

A 1-V SUPPLY VOLTAGE CONTROLLED OSCILLATOR FOR INTRAOCULAR PRESSURE MEASUREMENT

A. E. Rendon-Nava
Polytechnic National Institute, D.F., Mexico; National Institute for Astrophysics, Optic & Electronics, Puebla, Mexico
Luis Nino-de-Rivera
National Polytechnic Institute of Mexico (IPN), National Institute for Astrophysics, Optic & Electronics, Puebla, Mexico
J. A. Diaz-Mendez
Polytechnic National Institute, D.F., Mexico; National Institute for Astrophysics, Optic & Electronics, Puebla, Mexico

ABSTRACT

A 1-V supply LC (Inductive-Capacitive) VCO (Voltage Controlled Oscillator) for intraocular pressure measurement is presented. The VCO is fabricated in standard 0.18−μm CMOS (Complementary Metal Oxide Semiconductor) technology and occupies an active area of 700×750 μm2. Two varactors from the 0.18−μm process are used to emulate a MEMS (Micro Electro-Mechanical System) capacitive membrane response (pressure sensor). A response with very good linearity was achieved within a tuning range of 6%, which fits the MEMS pressure sensor variation range. The phase noise was −85 dBc/Hz at a 600−KHz offset from the carrier frequency at 500 MHz. The power consumption was 10 mW from a 1-V power supply.


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