Title :
Investigation of a planar bow-tie antenna fed by a flanged rectangular waveguide
Author :
Kim, B.M. ; Hwang, K.-P. ; Cho, Y.K.
Author_Institution :
Div. of Inf. & Commun., GyeongBuk Provincial Coll., Yeacheongun, South Korea
Abstract :
In this paper, a small planar bow-tie antenna fed by a flanged rectangular waveguide is investigated using the finite element method (FEM). The bow-tie antenna has two triangular conductive strips separated by a gap and each strip has an inverted triangular hole. Numerical results show that this bow-tie antenna can generate intense electrical field spots below the diffraction limit with transmission efficiency approaching unity. Antenna characteristics of the bow-tie antenna with holes are compared with those of the bow-tie antenna without holes as well as the flanged rectangular waveguide feed only.
Keywords :
antenna feeds; bow-tie antennas; finite element analysis; planar antennas; rectangular waveguides; finite element method; flanged rectangular waveguide; planar bow-tie antenna; transmission efficiency; triangular conductive strips; Antenna radiation patterns; Electric fields; Optical diffraction; Optical waveguides; Planar waveguides; Rectangular waveguides; bow-tie antenna; flanged rectangular waveguide; microscopy;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996829
