Comparing Various band-pass filter for X-band plasma radar receiver protector structures

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Kardgar Mohammad Reza; Razavi R.; Shekari A.; Ramezani M.

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Journal Paper

Paper Information

Journal: JOURNAL OF AEROSPACE DEFENSE Year:2024 | Volume:3 | Issue:3 Page(s): 27-40

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Information Journal Paper

Title

Comparing Various band-pass filter for X-band plasma radar receiver protector structures

Author(s)

Kardgar Mohammad Reza | Razavi R. | Shekari A. | Ramezani M. | Issue Writer Certificate

Keywords

radar receiver protection

microwaves

breakdown voltage

Comsol

Filtration

Abstract

The radar receiver protector is one of the important components in the radar system. It prevents the receiver from noise and powerful Electromagnetic wave. In this paper, the simulations are done for different structures of the radar receiver protector using COMSOL software in the X-band frequency.The simulation selected structure is based on the WR90 waveguide structure. In this simulation, parameters such as reflection and transmission coefficients, as well as the maximum field intensity created within different radar receiver protector structures, have been investigated. The studied structures include iris-diaphragms-pairs, posts-and-diaphragms, truncated-cones-and-diaphragms, Dumbell-pointed-post-tunable, Dumbell-pointed-post, and Dumbell structures.The simulation results show that the internal structure of the waveguide has an important parameter on the filtration performance, the frequency selection and intensity modes created on the tips of the electrodes. Dumbell-pointed-posts-tunable among the investigated structures due to the frequency modes and high intensity of the electric field at the tip of the electrodes, it is superior to other structures.

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