A high-power fixed-tuned millimeter-wave balanced frequency doubler

Author

Porterfield, David W. ; Crowe, Thomas W. ; Bradley, Richard F. ; Erickson, Neal R.

Author_Institution

Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA

Volume

47

Issue

4

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

419

Lastpage

425

Abstract

We report on the design and evaluation of a 40-80-GHz (40/80-GHz) high-power wide-band fixed-tuned balanced doubler. The active device is a single GaAs chip comprising a linear array of six planar Schottky varactors. The varactors and a quartz microstrip circuit are embedded in a split waveguide block. We have achieved a measured 3-dB fixed-tuned bandwidth of 17% and measured flange-to-flange peak efficiency of 48% at an input-power level of 200 mW. The doubler operates at near-peak efficiency (45%) at an input power of 250 mW. We have cooled the block to 14 K and achieved an efficiency of 61% at an input-power level of 175 mW and an efficiency of 48% at an input-power level of 365 mW. Emphasis has been placed on making the design easy to fabricate and scalable to higher frequencies

Keywords

finite element analysis; frequency multipliers; microstrip circuits; millimetre wave frequency convertors; varactors; 175 to 365 mW; 40 GHz; 48 to 61 percent; 80 GHz; GaAs; fixed-tuned bandwidth; flange-to-flange peak efficiency; input-power level; linear array; millimeter-wave balanced frequency doubler; near-peak efficiency; planar Schottky varactors; quartz microstrip circuit; split waveguide block; wide-band fixed-tuned frequency doubler; Bandwidth; Frequency; Gallium arsenide; Millimeter wave technology; NASA; Power generation; Power system reliability; Prototypes; Radio astronomy; Varactors;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.754875

Filename

754875