Compact High Gain Omnidirectional Horizontally Polarized Antenna Array Utilizing an Aperture With Uniform Field Distribution

Sub-6 GHz Band Omnidirectional Horizontally Polarized Large Spacing Array Antenna With Dielectric Radome for Base Station

“…Series-fed array antennas have only one feeding port which means simple structure. Many designs of series-fed antenna array were proposed such as franklin-like antenna array with phase inverters [22], uniform field distribution aperture structure [23], and MNG-TL loop antenna array [24]. The directivity of series-fed antennas has unavoidable upper limitation [25].…”

“…The directivity of series-fed antennas has unavoidable upper limitation [25]. And the lengthened structure brings the side effect of high-order modes, so the structure of suppressing high-order modes increases the complexity of the feeder structure instead [23]. What's more, decreasing the number of antenna elements is another method to reduce the system complexity.…”

Bandwidth‐enhanced horizontally polarized omnidirectional slot antenna based on single‐ridge trapezoidal waveguide

“…Recently, some new HP omnidirectional antennas have been reported [7][8][9]. In [7], a folded rectangular patch obtained uniform magnetic flow distribution, and thus achieves omnidirectional HP radiation.…”

“…Recently, some new HP omnidirectional antennas have been reported [7][8][9]. In [7], a folded rectangular patch obtained uniform magnetic flow distribution, and thus achieves omnidirectional HP radiation. In [8], the magnetic dipole array realized by the phase inverters has a high omnidirectional gain.…”