Design of a 1.26 GHz high gain microstrip rectangular patch antenna using double layer

Description:

In this paper, we introduce a method using double layer with airgap to design a high gain single element microstrip rectangular patch antenna operating at 1.26 GHz. Double layer technique provide us easy fabrication, besides, under layer consisted of double-sided copper ensure using one side as ground plane and other side as feed network for higher gain array antenna. We have purposed to obtain high gain microstrip patch antenna which has wide coverage area and low side lob level using a simple method of designing. In addition, low cost fabrication also has been taken into account. To do that, we used a widely available FR4 (Fire Resistant 4) material and instead of using low-loss and expensive substrates, we inserted an air gap between radiating and ground planes.