Open AccessSynthesis and analysis of multi‐mode profile horn using mode matching technique and evolutionary algorithm
Author(s) -
Dey Ranajit,
Chakrabarty Soumyabrata,
Jyoti Rajeev,
Kurian Thomas
Publication year - 2016
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2015.0276
Subject(s) - algorithm , particle swarm optimization , scattering , spline (mechanical) , multi mode optical fiber , mathematics , modal analysis , conical surface , optics , geometry , acoustics , physics , vibration , optical fiber , thermodynamics
This study presents the design and analysis of linear as well as cubic spline interpolated profiled smooth‐wall multimode horn using mode matching (MM) technique along with genetic algorithm (GA) and particle swarm optimisation (PSO). To apply the MM technique, the smooth profile conical geometry is assumed to consist of cascaded sections of large number of small symmetrical radial steps. Scattering matrix for each section has been calculated using MM technique and over all scattering matrix of the cascaded junctions has been calculated using generalised scattering matrix technique. The radiation pattern has been calculated using hybrid boundary contour mode matching technique. Optimisation of the linear/spline profile horn has been carried out using GA as well as PSO. Detailed modal analysis along with the convergence of the present technique for the smooth profile structure has also been carried out. A spline profile multimode horn working at 89 GHz has been designed and developed. The present analysis has been verified with the measured results. There is a very good agreement between theoretical and measured results.