In this paper we introduce a novel technique to overcome the drawbacks of passive tuners and active loops when characterizing very high power transistors and amplifiers. The methodology combines a passive tuner and an active loop, the former used to tune the fundamental output impedance of a device under test, the latter exploited to change the harmonic termination. Since the passive tuner changes also the harmonic load in an unpredictable way, we present for the first time a method to quickly find the correct settings for the active loop to achieve the desired harmonic load. This methodology, is simple to implement, relatively quick, and does not imply long system precalibration time when changing the characterization frequency.

A NOVEL METHODOLOGY FOR FAST HARMONIC-LOAD CONTROL WITH A PASSIVE TUNER AND AN ACTIVE LOOP / Bonino, Serena; Teppati, Valeria; Ferrero, ANDREA PIERENRICO. - ELETTRONICO. - (2010), pp. 1158-1161. ((Intervento presentato al convegno IEEE MTT 2010 International Microwave Symposium tenutosi a ANAHEIM nel 23-28 May 2010 [10.1109/MWSYM.2010.5517560].

A NOVEL METHODOLOGY FOR FAST HARMONIC-LOAD CONTROL WITH A PASSIVE TUNER AND AN ACTIVE LOOP

BONINO, SERENA;TEPPATI, VALERIA;FERRERO, ANDREA PIERENRICO
2010

Abstract

In this paper we introduce a novel technique to overcome the drawbacks of passive tuners and active loops when characterizing very high power transistors and amplifiers. The methodology combines a passive tuner and an active loop, the former used to tune the fundamental output impedance of a device under test, the latter exploited to change the harmonic termination. Since the passive tuner changes also the harmonic load in an unpredictable way, we present for the first time a method to quickly find the correct settings for the active loop to achieve the desired harmonic load. This methodology, is simple to implement, relatively quick, and does not imply long system precalibration time when changing the characterization frequency.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2317498
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