Open AccessOptimum design of double ridge horn antennas with general cross‐section
Author(s) -
Oraizi Homayoon,
Amini Amrollah,
Shakoori Amirhosein,
Karimimehr Mehdi
Publication year - 2019
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.2018.5230
Subject(s) - antenna (radio) , impedance matching , horn antenna , electrical impedance , french horn , ridge , cross section (physics) , mathematics , input impedance , acoustics , directional antenna , optics , computer science , physics , slot antenna , engineering , electrical engineering , telecommunications , geology , quantum mechanics , paleontology
In this study, an analytical method is proposed for design of double‐ridged horn (DRH) antenna, which is based on impedance matching of the structure by the method of least squares (MLSs). New basis functions are used for the MLS to obtain optimum impedance functions for the realisation of maximum matching. The resultant reflection coefficients are compared with available methods. The proposed optimum synthesis method is applicable to the arbitrarily tapered DRH antenna with a general cross‐section. As two applications, the proposed method is used for the design of linear and non‐linear flares of DRH antennas with rectangular and elliptical cross‐sections for operation in the frequency band 2–18 GHz. For the proof of concept, a prototype model of the proposed rectangular horn antenna is fabricated and measured in the frequency domain.