4 results for "Jamil, Muhammad Haris"
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Journal Article Full text
Optimized Quasi-Optical Mode Converter for TE(33,12) in 210 GHz Gyrotron
This article discusses the design of a high-performance quasi-optical mode converter for the [Formula: see text] mode at 210 GHz. The conversion process is challenging due to a caustic-to-cavity radius ratio of approximately 0.41. The mode converter employs an optimized dimpled wall launcher…
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Journal Article Full text
Design of a compact quasi-optical mode converter for a 105-GHz gyrotron using optimized perturbation technique
This paper presents the design and optimization of a compact quasi-optical (QO) mode converter for a high-performance gyrotron operating at 105 GHz in the [Formula: see text] mode. The converter integrates a dimpled-wall launcher with a novel dual-direction perturbation technique alternating…
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Journal Article Full text
Double-Staggered Grating Waveguide Slow Wave Structure for Terahertz Traveling Wave Tube
A double-staggered grating waveguide slow wave structure (DSGW–SWS) is designed for a 340 GHz traveling wave tube (TWT). Input and output couplers were also designed to isolate the electron beam source from the electromagnetic (EM) signal. Transition sections in the SWS circuits were made by…
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Journal Article Full text
Design and Simulation of an Electron Optical System for Terahertz Vacuum Devices
An electron optic system (EOS) consisting of a sheet electron beam gun (SEB) and a pole offset periodic cusped magnet (PO-PCM) is reported for 340-GHz frequency. A sheet electron beam with a voltage of 29 kV, beam compression ratio of 16, and a beam waist of size 0.17 mm × 0.044 mm was designed and…