A Compact Wideband SIW-Fed Dielectric Antenna With End-Fire Radiation Pattern

PROJECT TITLE :

A Compact Wideband SIW-Fed Dielectric Antenna With End-Fire Radiation Pattern

ABSTRACT:

In this communication, a triangular-formed dielectric antenna fed by substrate-integrated waveguide (SIW) is proposed and researched. The impact of the extended substrate’s length on performance of the proposed antenna is 1st researched. In order to cut back sidelobe level (SLL) at high frequency plus increase the adjustability of the proposed antenna while maintaining its planar structure, air vias are periodically perforated into the loaded substrate to modify the permittivity. The variation trend of modifying permittivity with changing performance of the proposed antenna is studied, followed by analyzing perform of the transition stage(s) of the extended substrate. Through optimizing the dielectric length and modifying the diameters of air vias to alter the permittivity, the proposed antenna with wide operating bandwidth and low SLL can be realized. Measured results indicate that the proposed antenna works from seventeen.6 to 26.seven GHz, which virtually covers the entire band. Besides, stable finish-fire radiation patterns in the whole operating band are obtained. Moreover, at least eight.three-dBi peak gains with low SLL are achieved as well.

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