Design of low cost microstrip antenna arrays for mm-Wave applications

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Abstract
A planar, low profile, low cost microstrip patch array antenna is developed in the millimeter-wave band for large gain applications. A simple edge feeding is used for a sub-array of 16 × 1 elements, and finally a matching network or power divider/splitter is designed for a 32 × 16 elements with a gain of 27 dBi for the design frequency of 79 GHz and 26 dBi at 80 GHz. A method to reduce the slightly high “shoulder” radiation due to the feed network is introduced through a shielded feed.