Thin AMC substrate by applying square patch with semicircle notch

Abstract

This paper presents a method of thinning an Artificial Magnetic Conductor (AMC) substrate by applying the semicircle notch to the square patch. We analyze the reflection characteristics by changing the arc length of the semicircle. As a result, the frequency where a Perfect Magnetic Conductor (PMC) characteristics appears is shifted to the lower side as the arc length of the semicircle increases. It is confirmed that the proposed method is thinning the AMC substrate thickness about 15% compared with the AMC that has no semicircle notch. Furthermore, it was experimentally confirmed that the thin AMC substrate was thinning by semi-circle notch.