Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/43593
Title: Wide range fully integrated VCO with new cells-based varactor
Authors: Marrero-Martin, Margarita 
Gonzalez, Benito 
Garcia, Javier 
Khemchandani, Sunil L. 
Hernández Ballester, Antonio 
Del Pino, Javier 
UNESCO Clasification: 3307 Tecnología electrónica
Keywords: VCO
Capacitance model
PN varactor
BiCMOS
Issue Date: 2012
Publisher: 0020-7217
Journal: International Journal of Electronics 
Abstract: This article presents a wide range inductance–capacitance voltage controlled oscillator (VCO) with a unit cells-based varactor. The unit cell represents the minimum possible integrated varactor based on p–n junction diodes, where N+ diffusions are central rectangles, surrounded by doughnut shaped P+ diffusions, with their respective contacts. The varactors are designed using the AMS 0.35 µm BiCMOS process. A physical model has been derived from the measurement of a set of eight fabricated varactors. Measurements indicate that the VCO, which is intended to be used in DVB-H, oscillates from 1.087 to 2.032 GHz, with a 61% tuning range. The phase noises of −124 dBc/Hz at 1 MHz offset and −108 dBc/Hz at 100 kHz offset are obtained
URI: http://hdl.handle.net/10553/43593
ISSN: 0020-7217
DOI: 10.1080/00207217.2011.651699
Source: International Journal of Electronics[ISSN 0020-7217],v. 99, p. 1165-1178
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