An active millimeter load-pull measurement system using two six-port reflectometers operating in the W-frequency band

Author

Chahine, Soubhi Abou ; Huyart, Bernard ; Bergeault, Eric ; Jallet, L.P.

Author_Institution

Beirut Arab Univ., Lebanon

Volume

51

Issue

3

fYear

2002

fDate

6/1/2002 12:00:00 AM

Firstpage

408

Lastpage

412

Abstract

An active load-pull measurement system using two six-port reflectometers operating in the W-frequency band is demonstrated. Ninety loads over the whole Smith chart have been synthesized and measured by both reflectometers. The maximum deviation between both measurement data is 0.02 for the magnitude and 3° for the phase of the reflection coefficient of the 90 loads. The constant power gain circles of a PHEMT operating at 89 GHz are shown and compared with those calculated from its S_ij scattering parameters. The deviation between the radii of circles is less than 0.03

Keywords

S-parameters; high electron mobility transistors; millimetre wave field effect transistors; millimetre wave measurement; reflectometers; semiconductor device measurement; 89 GHz; PHEMT; Smith chart; W-band; active millimeter load-pull measurement system; constant power gain circle; nonlinear transistor; scattering parameters; six-port reflectometer; Attenuation measurement; Attenuators; Detectors; Isolators; Phase measurement; Power dividers; Power measurement; Reflection; Schottky diodes; Waveguide junctions;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2002.1017708

Filename

1017708