Highly accurate harmonic tuners for load pull testing

Author

Tsironis, Christos ; Jurenas, Algis ; Liu, Chris Wei

Author_Institution

Focus Microwaves Inc., St. Laurent, Que., Canada

Volume

3

fYear

2001

fDate

2001

Firstpage

1311

Abstract

Highly reflective harmonic tuners with high resolution tuning accuracy between 0.2° and 0.7° over the whole 0-360° interpolated tuning range are presented. This can be obtained through precise alignment supported by calibration and nonlinear interpolation algorithms that allow reproduction of arbitrary impedances with accuracy typically exceeding -50dB, at the very edge of the Smith Chart. These tuners are used in a compact and accurate harmonic load pull system. This allows characterization of complex and strongly nonlinear behavior of microwave transistors, including: hot IV curves, saturation plots and load pull contours all under controlled conditions of the 2nd and 3rd harmonic impedances

Keywords

automatic test equipment; calibration; circuit analysis computing; circuit testing; electric impedance; harmonic analysis; interpolation; microwave transistors; nonlinear network analysis; tuning; Smith Chart; calibration; harmonic impedances; harmonic load pull testing; hot IV curves; load pull contours; microwave transistors; nonlinear behavior; nonlinear interpolation algorithms; reflective harmonic tuners; resolution; saturation plots; tuning range; Calibration; Frequency; Impedance; Power amplifiers; Power system harmonics; Propagation losses; Reflection; Testing; Tuners; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific

Conference_Location

Taipei

Print_ISBN

0-7803-7138-0

Type

conf

DOI

10.1109/APMC.2001.985376

Filename

985376