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Design Procedure for a Broadband TE11/HE11 Mode Converter for High-Power Radar Applications

Haas, Daniel; Thumm, Manfred

Abstract:

The HE$_{11}$ hybrid mode, propagating in an overmoded corrugated circular waveguide, is widely used for low loss transmission of high-power microwaves. Due to the inherent broadband frequency behaviour, this will be also essential for future broadband high-power radar applications, like space debris observation in low earth orbit (LEO). A promising amplifier concept for such radar sensors is a helical gyro-TWT. However, since the HE$_{11}$ hybrid mode is not suitable for electron-beam-wave interaction in this kind of vacuum electron device, an additional mode converter is required. The present paper addresses the design procedure of a broadband high-power mode converter, designed for a helical gyro-TWT intended for future broadband high-power radar applications in the W-band. The interaction mode of the helical gyro-TWT under consideration can be easily transferred to the circular waveguide TE$_{11}$ mode. Therefore, a TE$_{11}$ ↦ HE$_{11}$ mode converter is addressed here. The design procedure is based on a scattering matrix formalism and leads to a high HE$_{11}$ mode content of ≥98.6% within the considered frequency range from 92 GHz to 100 GHz. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000130921
Veröffentlicht am 25.03.2021
Originalveröffentlichung
DOI: 10.1007/s10762-021-00773-y
Scopus
Zitationen: 4
Web of Science
Zitationen: 3
Dimensions
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1866-6892, 0195-9271, 1572-9559, 1866-6906
KITopen-ID: 1000130921
HGF-Programm 31.13.02 (POF IV, LK 01) Plasma Heating & Current Drive Systems
Erschienen in Journal of Infrared, Millimeter, and Terahertz Waves
Verlag Springer Verlag
Band 42
Seiten 380–390
Vorab online veröffentlicht am 09.03.2021
Nachgewiesen in Scopus
Dimensions
Web of Science
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