A Compact Circular Waveguide Directional Coupler for High-Order Mode Vacuum Electronic Devices
Tao Zhu,
Wenjie Fu,
Dun Lu
et al.
Abstract:In this paper, a compact circular waveguide directional coupler for high-order mode vacuum electronic devices is presented and investigated. To reduce the size, the primary and secondary waveguides of this coupler are connected in an orthogonal way by two coupling holes. Moreover, to improve the directivity and operating bandwidth, a method of loading adjustable metal stubs on the isolating port is proposed and introduced in design. A Ka-band TE01-mode circular waveguide directional coupler was designed, and t… Show more
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