Abstract

A resonant cavity-based dielectric lens antenna has been presented for 60 GHz-band (57.24–65.88 GHz) wireless applications. The feeding element is a patch antenna designed with size improvement method for laboratory based fabrication with printed circuit board etching process. A semi-sphere dielectric lens is placed in front of the feeding antenna at a distance equal to about half-wavelength of the operating central frequency of 61 GHz. Simulation analysis has been performed on the cavity height and lens radius to obtain an optimised antenna design for its best performance in term of gain (20.1 dBi) and return loss (S 11) bandwidth (6.14 GHz).

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