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20GHz CMOS distributed voltage controlled oscillators with frequency tuning by MOS varactors

DSpace at IIT Bombay

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Title 20GHz CMOS distributed voltage controlled oscillators with frequency tuning by MOS varactors
 
Creator BHATTACHARYYA, K
MUKHERJEE, J
BAGHINI, MS
 
Subject microwave cmos
design
cmos rfic
microwave integrated circuits
coplanar waveguides
mosfets
traveling wave amplifier
distributed oscillator
vco
 
Description The feasibility of using standard 0.18 mu m CMOS technology for low cost wideband monolithic microwave integrated circuits (MMICs) at similar to 20GHz is demonstrated. Two monolithically integrated distributed oscillators with n-FET gain cells are designed having four and three stages respectively, Coplanar waveguides used as the on-chip inductive elements. MOS Varactors are employed to tune the frequency, a new study for distributed VCOs. Simulated results indicate that the 4-stage D-VCO is oscillating at 20.02GHz and tuned up to 20.23GHz (tuning of 210MHz) where as the frequency of the 3-stage D-VCO is 20.46GHz and tuned up to 21.03GHz (tuning of 570MHz). The change in output power level with tuning is similar to 1.5dBm in 4-stage and similar to 2dBm in 3-stage designs. These D-VCOs are also compared with measured results of previously, reported D-VCOs.
 
Publisher IEEE
 
Date 2011-10-25T18:53:01Z
2011-12-15T09:12:05Z
2011-10-25T18:53:01Z
2011-12-15T09:12:05Z
2009
 
Type Proceedings Paper
 
Identifier 2009 2ND INTERNATIONAL WORKSHOP ON ELECTRON DEVICES AND SEMICONDUCTOR TECHNOLOGY,91-96
978-1-4244-3831-0
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15793
http://hdl.handle.net/100/2458
 
Source 2nd International Workshop on Electron Devices and Semiconductor Technology,Bombay, INDIA,JUN 01-02, 2009
 
Language English