volume | PIER Journals

Abstract

This article proposes a new design of wideband wide beam microstrip like antenna (MLA) in X-band (8-12 GHz) overcoming the limitations of conventional MLA design. The waveguide is filled with a dielectric material, which is shaped beyond the waveguide aperture as a pyramidal structure. This helps in achieving the size reduction of the waveguide and matching of aperture admittance over the complete operational band. Also a vertical electric dipole feed design is proposed to excite MLA and match the source and load admittances. The input reflection coefficient observed over the complete band is better than -10 dB. The measured gain and cross polarized levels of antenna achieved are better than 3 dBi and -18 dB across the bandwidth, respectively. The measured and simulated results are in good agreement.

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Dr. Ashutosh Kedar

Prof. Anil Kumar Singh