학술논문
Design of a 140 GHz waveguide notch filter for millimeter-wave receiver module protection in fusion plasma diagnostics.
Document Type
Article
Author
Source
Subject
*WAVEGUIDE filters
*NOTCH filters
*CAVITY resonators
*INSERTION loss (Telecommunication)
*THERMAL analysis
*PLASMA diagnostics
*SYSTEMS on a chip
*GYROTRONS
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Language
ISSN
0034-6748
Abstract
A carefully designed waveguide-based millimeter-wave notch filter, operating at 140 GHz, safeguards plasma diagnostic instruments from gyrotron leakage. Utilizing cylindrical cavity resonators with aperture coupling, the filter efficiently resonates 140 GHz wave-power into the TE11p mode, optimizing various geometrical parameters for practical fabrication and high-yield production. Thorough thermal analysis ensures its ability to handle power. The filter achieves outstanding performance with over 90 dB rejection at 140 GHz while providing low insertion loss over the passband (110–138 GHz), which is ideally suited for system-on-chip approach F-band diagnostic system applications. [ABSTRACT FROM AUTHOR]