Analyses of the optimal power load impedances measured in MMIC and hybrid configuration in the Ka band

Author

Gaquiere, C. ; Bourcier, E. ; Piotrowicz, S. ; Crosnier, Y.

Author_Institution

Inst d´´Electron. et de Microelectron. du Nord, CNRS, Villeneuve D´´Ascq, France

Volume

7

Issue

10

fYear

1997

fDate

10/1/1997 12:00:00 AM

Firstpage

356

Lastpage

358

Abstract

The authors deal with the main different behaviors of the optimal power load impedances for two devices (PHEMT) studied in two configurations (called “probing” or “hybrid”) in power condition with an active load pull bench in Ka band (26-40 GHz). Contrary to what would be expected, the difference is not only a phase shift, which is usually the case at lower frequencies, but a gap in phase and magnitude between the optimal impedances. This behavior is presented. A linear electrical simulation has been achieved in order to explain these behaviors

Keywords

MMIC; electric impedance; electric impedance measurement; equivalent circuits; hybrid integrated circuits; integrated circuit measurement; millimetre wave measurement; 26 to 40 GHz; Ka band; MMIC configuration; active load pull bench; hybrid configuration; linear electrical simulation; optimal power load impedances; phase shift; Bonding; Circuits; Fixtures; Frequency; Impedance measurement; MMICs; Microstrip; PHEMTs; Power measurement; Probes;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.631200

Filename

631200