An efficient approach to the design of multi-layer microstrip array antennas

This paper presents an efficient approach to the design and development of multi-layer microstrip patch antenna sub-arrays for possible applications in wireless communications systems. The approach is based on the use of a combination of software packages, which are separately applied to the design of antenna elements and feed network. This approach is demonstrated in the design example of 2/spl times/2 element and 4/spl times/4 element X-band sub-arrays.