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Authors:Mattias Ingarson: Microwave Electronics Laboratory, Chalmers University of Technology, Sweden
Arne Olsen Øistein: Microwave Electronics Laboratory, Chalmers University of Technology, Sweden
Erik Kollberg: Microwave Electronics Laboratory, Chalmers University of Technology, Sweden
Jan Stake: Microwave Electronics Laboratory, Chalmers University of Technology, Sweden
Publication title:Design; analysis and modelling of heterostructure barrier varactors for sub-millimetre wave frequency quintuplers
Conference:GigaHertz 2003. Proceedings from the Seventh Symposium
Publication type: Poster
Issue:008
Article No.:063
Abstract:We report on the design; modelling and analysis of heterostructure barrier varactor (HBV) frequency quintuplers with output frequencies in the sub-millimetre wave region. The HBV is a symmetric varactor; thus only odd harmonics are generated and no DC bias is required. By incorporating several barriers in the device; the HBV is also capable of handling higher power levels than conventional varactors. This makes the HBV superior to the conventional Schottky varactor for high order frequency multiplier circuits. We present analytical models; which can be used to calculate parameters such as optimum doping concentration; layer structure; device area and series resistance for HBVs; as well as to predict the performance with respect to conversion efficiencies and output power levels. These parameters are then further optimised by harmonic balance simulations in commercial microwave EDA tools; for which we have developed accurate device models. We investigate the influence of embedding impedance levels for optimum conversion efficiency by means of analytical expressions and harmonic balance simulations. Theoretical calculations predict a maximum diode conversion efficiency to 500 GHz for a planar; six-barrier InGaAs HBV of more than 30 %.
Language:English
Year:2003
No. of pages:4
Series:Linköping Electronic Conference Proceedings
ISSN (print):1650-3686
ISSN (online):1650-3740
File:http://www.ep.liu.se/ecp/008/posters/037/ecp00837p.pdf
Available:2003-11-06
Publisher:Linköping University Electronic Press; Linköpings universitet

REFERENCE TO THIS PAGE
Mattias Ingarson, Arne Olsen Øistein, Erik Kollberg, Jan Stake (2003). Design; analysis and modelling of heterostructure barrier varactors for sub-millimetre wave frequency quintuplers, GigaHertz 2003. Proceedings from the Seventh Symposium http://www.ep.liu.se/ecp_article/index.en.aspx?issue=008;article=063 (accessed 12/19/2014)