Abstract
Ground irregularities also known as defected ground structures (DGS) is a freshly presented innovatory way in designing of patch antennas to boost up the performance of antenna constraints. This study presents a novel proposal of ground irregularities or defected ground structure is proposed for suppression of mutual coupling effects among 2x1 multiple input multiple output patch array designed on Roggers Duroid 5880. The two adjacent M shape structures surrounding Dumbbell Shaped structure and sandwiched between Dumbbell shape patterns showed the significant level of surface wave suppression up to -42dB while maintaining the gain of 4.7dB and 5.6dBi of directivity. The patch array operates at 4 to 4.3GHz for Fixed and Radio satellite services (FSS) and (RSS) and radio altimeter application systems.
Highlights
With the rapid advancement of technology, the communications industry has seen significant growth in order to fulfill the criteria of higher consumer data rate demand
The return loss plot or reflection coefficient was slightly decreased in proposed antenna with gain but overall directivity patterns have increased
Isolation enhancement is taken in terms of S12 as only one of the patch elements has been excited
Summary
With the rapid advancement of technology, the communications industry has seen significant growth in order to fulfill the criteria of higher consumer data rate demand. Defected ground structures are used to control size of antenna significantly and producing multiband response [6] as their shape aims to control the propagation of waves from ground to radiating element through substrate. Their ability to control electromagnetic suppression just like of Electromagnetic band gap structures gives them edge as their implementation is more easy as compared to others [7], [8].
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