Low power and low phase noise 5.7 GHz LC VCO in OOK transmitter for neurosensory application

P Upadhyaya,D.M Rector,D Heo,M Rajashekharaiah,Yi-Jan Emery Chen Yi-Jan Emery Chen

doi:10.1109/mwsym.2005.1516989

Low power and low phase noise 5.7 GHz LC VCO in OOK transmitter for neurosensory application

P Upadhyaya, D.M Rector + Show 3 more

Open Access

https://doi.org/10.1109/mwsym.2005.1516989

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Publication Date: Jan 1, 2005

Citations: 10

Affiliation: Washington State University, National Taiwan University

#GHz LC VCO #MHz Offset Frequency + Show 8 more

Abstract
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Abstract

A 5.7 GHz fully integrated complementary LC voltage controlled oscillator (CLC VCO) has been designed in an inexpensive 0.25-/spl mu/m digital CMOS process for low power neurosensory application. Consuming only 2mA of current from a 2.5 V power supply, the CLC VCO achieves a measured single-sideband phase noise of -92.75 dBc/Hz and -97.6 dBc/Hz at 600 KHz and 1.0 MHz offset frequency, respectively. The CLC VCO is able to output -5dBm of power at the single-ended output to a 50-Ohm load to meet demands of high-date rate short reach on-off keying (OOK) wireless transmission. Various low power techniques used to improve phase noise in the LC VCO are also discussed.

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