Modelling and design of high-power HBV multipliers
Doctoral thesis, 2004

This thesis deals with symmetric varactor frequency multipliers for millimetre and sub-millimetre wave applications. Much of the material presented is general and applicable to any type of (symmetric) varactor, but the focus is on the heterostructure barrier varactor (HBV). The basic function and principles of HBVs are explained. This includes current transport mechanisms, elastance modulation and the important parasitic series resistance. Various epitaxial material layer structures employed for HBVs are compared, followed by a description of HBV processing techniques and different device geometries. The focus is then directed towards modelling high-power devices and a closely related investigation of thermal limitations and models for HBVs. The thermal properties are important in the subsequent section dealing with the design of HBV layer structures. HBV frequency multipliers are treated in the last section. Basic multiplier design considerations are discussed, followed by a review of the most common HBV multiplier topologies. Finally, HBV multiplier measurements are described and state-of-the-art results are presented.

thermal limitations


millimetre and sub-millimetre wave power source

varactor diode

frequency multiplier

heterostructure barrier varactor

Kollektorn (A423), MC2
Opponent: Professor Viktor Krozer, Technical University of Denmark, Lyngby, Denmark


Mattias Ingvarson

Chalmers, Microtechnology and Nanoscience (MC2)

An electro-thermal HBV model

IMS 2005,; (2005)p. 1151-1153

Paper in proceeding

Thermal constraints for heterostructure barrier varactors

IEEE Electron Device Letters,; Vol. 25(2004)p. 713-715

Journal article

Design and analysis of 500 GHz heterostructure barrier varactor quintuplers

Proceedings of the 14th International Symposium on Space Terahertz Technology,; (2003)

Journal article

A low cost fixed tuned F-band HBV frequency tripler

IEEE MTT+S International Microwave Symposium Digest,; Vol. 2(2003)p. 899-902

Paper in proceeding

A 100-GHz HBV frequency quintupler using microstrip elements

IEEE Microwave and Wireless Components Letters,; Vol. 14(2004)p. 493-395

Journal article

11% efficiency 100 GHz InP-based heterostructure barrier varactor quintupler

Electronics Letters,; Vol. 41(2005)p. 131-132

Journal article

Heterostructure Barrier Varactors on Copper Substrate for Frequency Multipliers

GigaHertz 2000,; (2000)p. 51-54

Paper in proceeding

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering



Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie: 2213

Technical report MC2 - Department of Microtechnology and Nanoscience, Chalmers University of Technology: 11

Kollektorn (A423), MC2

Opponent: Professor Viktor Krozer, Technical University of Denmark, Lyngby, Denmark

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