The determination of diode resistance from the transmission using a waveguide/coaxial line tee junction

Author

Twisleton, J.R.G.

Author_Institution

EEV Co., Lincoln, UK

Volume

43

Issue

6

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

1236

Lastpage

1240

Abstract

A method of finding the resistance and conductance of a diode terminating the coaxial arm of a tee junction from the minimum transmission obtained by adjusting the position of the diode, from the effect of an incremental change in this position, or from the frequency bandwidth of the transmission characteristic, is described. The method avoids the direct measurement of high reflection encountered at the extremes of bias with diode terminations. The parameters of the junction needed in the derivation are found experimentally. Allowing for loss in the coaxial line, the resistance of diodes determined at 9.4 GHz was in good agreement with the results of coaxial line measurements at 500 MHz and 3 GHz. The effect of the reactances of the diode capsule, not allowed for in the determination, is considered briefly

Keywords

coaxial cables; electric resistance measurement; microwave diodes; microwave measurement; semiconductor device testing; waveguide discontinuities; 500 MHz to 9.4 GHz; diode conductance; diode resistance; diode terminations; minimum transmission; transmission characteristic; waveguide/coaxial line tee junction; Bandwidth; Circuits; Coaxial components; Diodes; Electrical resistance measurement; Frequency; Reflection; Voltage; Waveguide junctions; Waveguide transitions;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.390177

Filename

390177