Open AccessLow power and low phase noise 5.7 GHz LC VCO in OOK transmitter for neurosensory application
Author(s) -
P. Upadhyaya,
M. Rajashekharaiah,
D. Heo,
D.M. Rector,
Yi-Jan Emery Chen
Publication year - 2005
Publication title -
ieee mtt-s international microwave symposium digest, 2005.
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.492
H-Index - 72
eISSN - 2576-7216
pISSN - 0149-645X
DOI - 10.1109/mwsym.2005.1516989
Subject(s) - components, circuits, devices and systems , engineered materials, dielectrics and plasmas , fields, waves and electromagnetics , aerospace , communication, networking and broadcast technologies , photonics and electrooptics
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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