Slotted rectangular waveguide with dielectric sandwich structure inside

IEEE Radio and Antenna Days of the Indian Ocean 2017

无线电电子学

Abdullin, R.R.^1 ; Sokolov, R.I.^1

Engineering School of Information Technologies, Telecommunications and Control Systems, Ural Federal University Named after the First President of Russia B.N. Yeltsin, 19 Mira Street, Yekaterinburg, Russia^1

关键词: Calculation techniques;    Dielectric slabs;    Dispersion properties;    In-situ measurement;    Leaky wave antennas;    Multilayer waveguides;    Numerical results;    Transmission coefficients;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/321/1/012002/pdf
DOI  :  10.1088/1757-899X/321/1/012002

来源: IOP

【 摘 要 】

This paper continues the series of works devoted to the investigation of leaky-wave antenna based on layered rectangular waveguide with periodic transverse slots in broad face. Previously developed wavenumber calculation technique has been adapted for analysis of slotted sandwich waveguide with three layers at least. The paper provides the numerical results of velocity factor dependencies for partially filled slotted rectangular waveguide containing a dielectric slab in the middle position inside or an air gap between two dielectric slabs. Additionally, dispersion properties are also considered for multilayer waveguide with linear laws combinations of thickness and permittivity. This allows recognizing the trends to develop new prospective antennas with complex patterns of tilt angle change. All numerical results obtained are confirmed with the in-situ measurements of transmission coefficient phase.