TELECOMMUNICATIONS AND RADIO ENGINEERING - 2010 Vol. 69,
No 4 		 

 

 

 

A Thin Step-Bended Conductor in the Rectangular Waveguide Cross-Section Plane as a Simple Reflector


À.À. Kirilenko & S.A. Prikolotin
A. Usikov Institute of Radio Physics and Electronics,
National Academy of Sciences of Ukraine
12, Academician Proskura St., Kharkiv 61085, Ukraine
Address all correspondence to S.A. Prikolotin E-mail: prikolotin@ire.kharkov.ua

Abstract
Simple geometries of practically feasible units placed in the cross-section plane of a rectangular waveguide are analyzed, which are capable of supporting narrow-band full reflection resonances. The elements represent thin step-bended conductors connecting two opposite walls of a waveguide. They can be regarded as a special kind of two-aperture irises which can be placed, for example, between the waveguide flanges. The resonance effect supported by such structures is based on the interference interaction of the iris eigen-mode fields with two L-shaped apertures. The reflection resonance frequency and Q-factor are controllable over a wide range through changing the position and height of the stepped bend. Situations are analyzed when a perfect step-bended conductor provides for a resonance characterized by a practically zero width of the stop band. Such a nontrivial 3D waveguide unit loaded on feeding sections is capable of supporting eigen-mode oscillations with no radiation losses. Results of computer simulations and its experimental verification are presented.

KEY WORDS: rectangular waveguide, reflecting unit, step-bended conductor

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pages 327-340

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