A compact loop type antenna for millimeter band applications

A millimeter band microstrip patch antenna was developed to achieve a bandwidth of 2GHz from 58.995GHz to 60.995GHz with linear polarization capability. In this paper the key configuration of the antenna consists of two loops having an opening at opposite side. The bandwidth of the antenna is enhanced by taking the advantage of this double loop arrangement and the mutual coupling between the inner and outer loops. In this paper, properties of the proposed two loop antenna are investigated in the frequency range from 58.995 GHz to 60.995 GHz which is efficient for satellite millimeter band applications.