Plasma Based Absorptive and Adaptive High-Power Waveguide Protector

A plasma based adaptive waveguide high-power microwave (HPM) protector is presented in this paper. The proposed structure is comprised of double layer structure with metallic slots perburated and separated by 0.15\lambda_{0} . The coupling effect between the two layers realized a selective broadband...

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Bibliographic Details
Published in2024 IEEE/MTT-S International Microwave Symposium - IMS 2024 pp. 567 - 570
Main Authors V, Krushna Kanth, Ahmed, Md Tanvir, Semnani, Abbas
Format Conference Proceeding
LanguageEnglish
Published IEEE 16.06.2024
Subjects
absorptive
Adaptive
Bandwidth
Capacitors
coupling
Couplings
high power microwave microwave plasma
Insertion loss
protector
Prototypes
Rectangular waveguides
Switches
waveguide
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Summary:A plasma based adaptive waveguide high-power microwave (HPM) protector is presented in this paper. The proposed structure is comprised of double layer structure with metallic slots perburated and separated by 0.15\lambda_{0} . The coupling effect between the two layers realized a selective broadband frequency protector. The structure posses absorptive and adoptive behaviour with effect of absorptive top layer and plasma on both layers. A prototype is designed for the rectangular waveguide WR-240 and full-wave simulation along with experimental verification proves the working mechanism. The results shows an insertion loss 1.5 dB in the whole working band with relative bandwidth 6% during low power incoming signals. Once the incident signal power exceeds the protection threshold of the protector, signal can be attenuated by more than 30 dB. The out-of transmission band has absorption below 10 dB in S-band region.
ISSN:2576-7216
DOI:10.1109/IMS40175.2024.10600331