High Gain Array of Monopoles-Coupled Antennas for Wireless Applications

Abstract

An array of monopole antennas over a ground plane that radiates a directive lobe in the end-fire direction are described in this paper. The design uses the rigorous method described by Drouet et al. 2008 in order to synthesize the radiation through the strong cumulative coupling between the monopoles. A gain higher than 20 dB was achieved in the end-fire direction over a 4.5% bandwidth. However, the antenna has been tilted in order to compensate the beam deviation caused by the edge diffraction. A prototype with 12 elements has been manufactured in order to validate the antenna principle and the whole antenna is successfully measured. The prototype was studied with the software CST-Microwave Studio and the feed network has been designed with Agilent ADS.

High‐gain printed monopole arrays with low‐complexity corporate‐feed network

“…In the literature there is a plethora of monopole arrays designed with separated corporate-feed networks [2]; however, unavoidably these networks become more and more complicated as the number of elements increases thus requiring power splitters, impedance transformers, delay lines and fine tuning of the geometrical parameters to achieve impedance matching [17][18][19][20][21].…”