Abstract

A low profile antenna consisting of a wideband monopole over an artificial magnetic conductor (AMC) is presented in this paper. The AMC is a dual band structure, manufactured on 3.2mm thick FR-4 substrate with the reflection phase in the 2.0 GHz and 5.8 GHz ranges. A wideband printed circular disc monopole antenna uses this dual band AMC as a ground plane resulting in a low profile multiband antenna system with a height of 7.8mm. The frequency bands covered are at GPS (1.57542 GHz), DCS (1.710–1.880 GHz), PCS (1.850–1.990 GHz), UMTS (1.925–2.175 GHz), WLAN (2.4–2.485 GHz), WiFi (5.15–5.825 GHz) and V2X (5.76–5.84 GHz). It is demonstrated that the boresight gain increases when the AMC is used as a ground plane for the antenna in conjunction with a large metal plate.

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