60-GHz CPW-fed post-supported patch antenna using micromachining technology

Abstract

A 60-GHz coplanar waveguide (CPW)-fed post-supported patch antenna is presented using micromachining technology. In the proposed structure, the radiating patch and the feed line network can be optimized separately with a substrate. The antenna performance is improved by elevating the patch in the air. A patch array antenna is also designed with a simple feed network. The fabricated antenna shows broad band characteristics such as - 10 dB bandwidth of 4.3 GHz from 58.7 GHz to 64.5 GHz in the single patch antenna and 8.7 GHz from 56.3 GHz to 65 GHz in 2 x 1 patch array antenna.