Design and Modification of multiband M-slot patch antenna for wireless applications

Abstract

A Novel design of multiband patch antenna (PA) with microstrip line feeding is presented in this paper. Initially, a square shaped antenna with M slot edge on patch layer was designed and the findings in terms of gain, bandwidth and return loss were recorded. A modification by cutting a rectangular slot of ground layer of the antenna was proposed for better performance. A copper material was used for patch and ground layers of the proposed design while a FR-4 epoxy material with thickness of 1.5 mm was used for substrate layer. The results show that M -slot patch antenna(MSPA) can operate at 2.4GHz, 4.55GHz and 7.63GHz which is applicable for Wi-Fi and Wi-max applications while the modified design has better performance and can operate effectively at 2.4GHz, 4.55GHz, 7.63GHz, 8.3GHz, 9 GHz and 9.9 GHz which can be devoted for extra wireless applications such as x- band satellite requirements.