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With the rapid development of communication capacity, the demand for ultra-wideband (UWB, 3.1–10.6 GHz, allocated by the Federal Communications Commission of the United States, FCC) antenna has been increasing in wireless communication system. However, some other narrow band such as WLAN band (5.15–5.825 GHz), WiMAX band (3.4–3.6 GHz) and C-band satellite communication system (3.7–4.2 GHz) will inevitably...
In this letter, we present a new beam shaped microstrip patch antenna(MPA) by matematerial units. Due to the effective phase gradient provided by matematerial units, the beamwidth broadens and the beam symmetrically expands. To demonstrate this method, we designed a microstrip patch antenna with matematerial units etched on the substrate. An experiment was carried out to verify our design method....
In this letter, a novel high-directivity microstrip patch antenna (MPA) based on planar zero-index metamaterials is presented. An averaging effect over the metamaterial structure yields an effective permittivity that approaches zero at 8.75 GHz, which results in a metamaterial with zero index of refraction. Both the simulation and experimental results show that the directivity of the antenna is effectively...
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