Cookies helfen uns bei der Bereitstellung unserer Dienste. Durch die Nutzung unserer Dienste erklären Sie sich damit einverstanden, dass wir Cookies setzen.

Cuvillier Verlag

30 Jahre Kompetenz im wissenschaftlichen Publizieren
Internationaler Fachverlag für Wissenschaft und Wirtschaft

Cuvillier Verlag

De En Es
Filter Helices in Low-Frequency Traveling-Wave Tubes

Printausgabe
EUR 0,00

E-Book
EUR 0,00

Filter Helices in Low-Frequency Traveling-Wave Tubes

Elke Gehrmann (Autor)

Vorschau

Inhaltsverzeichnis, PDF (46 KB)
Leseprobe, PDF (200 KB)

ISBN-13 (Printausgabe) 9783736992399
ISBN-13 (E-Book) 9783736982390
Sprache Englisch
Seitenanzahl 126
Umschlagkaschierung glänzend
Auflage 1.
Erscheinungsort Göttingen
Promotionsort TU Hamburg
Erscheinungsdatum 02.05.2016
Allgemeine Einordnung Dissertation
Fachbereiche Elektrotechnik
Schlagwörter Second harmonic, TWT, period reflections
Beschreibung

This work deals with the improvement of tube performance by using a novel method of second-harmonic suppression. The common techniques of harmonic suppression inside the tube are introduced and discussed with respect to their suitability for modern space applications. A filter helix delay line is presented as a useful approach for harmonic suppression in these applications and its design parameters are introduced. Its effect in traveling-wave tube operation is simulated with the code “MVTRAD-Reflections” proprietary to Thales Electronic Systems. Three different filter helix designs are developed and tested, one in an L-band tube and two in S-band tubes. Improvement of the output power, i.e. increase of the first and suppression of the second harmonic as well as a higher energy of the electron beam at the output are the main design goals. The influence of the filter helix design parameters on the tube output is investigated. They are optimized to achieve the designated design goals. In simulation and measurement, the performance of the tubes is analyzed and compared to that of the tubes without a filter helix. In addition, the influence of the reflection at the output coupler on filter helix performance is investigated.