A simple printed antenna with broadband property and omnidirectional radiation patterns of wire dipole

Abstract

This letter presents a unique printed dipole antenna which can roughly cover an 80% fractional bandwidth (VSWR ≤ 3), and especially possess the omnidirectional radiation patterns similar to those of wire dipole antenna at its all resonant modes. The antenna is simple with a microstripfed structure which it is just composed of two arms with each one forming the shape of a conventional "inset-fed" rectangular patch antenna. At the lowest operation frequency for VSWR = 3, the antenna size is only 0.3λ × 0.008λ, showing its effectiveness in many applications of small antennas.

A low-profile wideband dual-polarized antenna with nonuniform metasurface

“…After many years of development, there are many users of wireless communication systems, so the requirements for the communication system are higher. To meet the needs of users, dipole antennas are widely used in base station antennas [1,2,3,4,5]. The advantages of the dual-polarized antenna are wideband, multi-frequency, and multi-mode, which can be used to resist channel attenuation and increase channel capacity [6,7,8,9].…”