Paper Info
Title
A Novel CMOS High-Power Terahertz VCO Based on Coupled Oscillators: Theory and Implementation
Abstract
We introduce a novel frequency tuning method for high-power terahertz sources in CMOS. In this technique, multiple core oscillators are coupled to generate, combine, and deliver their harmonic power to the output node without using varactors. By exploiting the theory of nonlinear dynamics, we control the coupling between the cores to set their phase shift and frequency. Using this method, two high-power terahertz VCOs are fabricated in a 65 nm LP bulk CMOS process. The first one has a measured output power of 0.76 mW at 290 GHz with 4.5% tuning range and the output power of the second VCO is 0.46 mW at 320 GHz with 2.6% tuning range. The output power of these signal sources is 4 orders of magnitude higher than previous CMOS VCOs and is even higher than VCOs implemented in compound semiconductors with much higher cut-off frequencies.
Year
DOI
Venue
2012
10.1109/JSSC.2012.2217853
Solid-State Circuits, IEEE Journal of
Keywords
Field
DocType
CMOS analogue integrated circuits,varactors,voltage-controlled oscillators,CMOS,compound semiconductor,coupled oscillator,frequency 290 GHz,frequency 320 GHz,frequency tuning method,harmonic power,high-power terahertz VCO,multiple core oscillator,nonlinear dynamics,power 0.46 mW,power 0.76 mW,size 65 nm,varactor,CMOS,Terahertz,VCO,coupled oscillator,distributed systems,frequency tuning,harmonic generation,matching,nonlinear dynamics,phase shifter,power combining
Control theory,Computer science,High harmonic generation,Harmonic,Voltage-controlled oscillator,CMOS,Electronic engineering,Harmonic analysis,Phase shift module,Terahertz radiation,Electricity generation
Journal
Volume
Issue
ISSN
47
12
0018-9200
Citations 
PageRank 
References 
22
1.82
17
Authors
3
Name
Order
Citations
PageRank
Yahya M. Tousi116113.68
Omeed Momeni2373.91
Ehsan Afshari332536.65