An axially extracted virtual cathode oscillator designand characterization

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü, Türkiye

Tezin Onay Tarihi: 2018

Öğrenci: BÜŞRA TİMUR

Danışman: ŞİMŞEK DEMİR

Özet:

This thesis investigates axially extracted virtual cathode oscillator, which is one of the HPM sources, in several aspects. First, the cathode ring structure is defined, and effects of that structure are interpreted. Besides, the dependency between current density characteristics in the diode region of the studied vircator and the defined power conversion efficiency is shown. Moreover, the input characteristic of the vircator is examined in terms of the applied inlet voltage and corresponding inlet current. By taking these waveforms into consideration, the input port of the vircator is modeled with an equivalent electric circuit. Then, the variation of the modeled electric circuit component values with respect to the vircator's design parameters is analyzed.