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Design and development of the W‐band corrugated waveguide mode converter for fusion plasma experiments
Author(s) -
Dhuda Hirenkumar V.,
Patel Piyush N.,
Pandya Hiteshkumar B.
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22024
Subject(s) - directivity , french horn , optics , reflection coefficient , materials science , mode (computer interface) , plasma , fusion , cyclotron , gyrotron , reflection (computer programming) , physics , electron , acoustics , electrical engineering , engineering , antenna (radio) , computer science , linguistics , philosophy , quantum mechanics , operating system , programming language
In this paper, a W‐band mode converter is designed using a circular corrugated horn and its detailed numerical study is presented. The proposed mode converter was fabricated, and the measured results are validated. The device converts fundamental mode (TE 11 ) into a Hybrid mode (HE 11 ) mode in a frequency range of 75 GHz to 105 GHz. The reflection coefficient is less than −15 dB and a peak directivity of 24.5 dB is achieved. The corrugated horn also shows good mode purity. The measured gain of the device was found to be 18.05 dB. The designed mode converter will be useful in Electron Cyclotron Resonance Heating system for fusion plasma experiments.