A Dual-Polarized Filtering Base-Station Antenna With Compact Size for 5G Applications

Design of compact broadband dual‐polarized antenna for 5G applications

“…The antenna features including compact‐size, broadband, dual‐polarization, good impedance matching, high isolation, stable radiation pattern, high efficiency are demonstrated by using a full‐wave simulator of the ANSYS Electronics Desktop and validated by experiments. As compared to the related works, 5‐10,12,15 the proposed antenna yields a smallest volume and a broader bandwidth.…”

“…On the other hand, due to features of combating the multipath fading, increasing the channel capacity, reducing the number and size of antennas, dual‐polarized antennas 4 have been widely adopted for the existing 2G/3G/4G and the new 5G systems. Recently, there have been different dual‐polarized antenna configurations 5–14 reported for the sub‐6 GHz 5G applications, for example, including patch antennas, crossed bowtie dipoles, cross slotted antenna, and magneto‐electric (ME) dipoles. The patch antennas 5–9 are preferred due to their advantages of lightweight, low profile, low cost, easy fabrication, and integration.…”

“…Recently, there have been different dual‐polarized antenna configurations 5–14 reported for the sub‐6 GHz 5G applications, for example, including patch antennas, crossed bowtie dipoles, cross slotted antenna, and magneto‐electric (ME) dipoles. The patch antennas 5–9 are preferred due to their advantages of lightweight, low profile, low cost, easy fabrication, and integration. Since the conventional patch antennas normally suffer narrow bandwidth, 5 several techniques have been applied into the patch antennas to broaden their operational frequency range, for example, adding parasitic element 6,7 and using air‐substrate structure 8,9 .…”

“…The patch antennas 5–9 are preferred due to their advantages of lightweight, low profile, low cost, easy fabrication, and integration. Since the conventional patch antennas normally suffer narrow bandwidth, 5 several techniques have been applied into the patch antennas to broaden their operational frequency range, for example, adding parasitic element 6,7 and using air‐substrate structure 8,9 . In Reference 10, a dual‐polarized crossed dipole antenna is backed by a dielectric cavity to achieve a compact size at the center frequency of 3.7 GHz.…”

Switchable Slant Polarization Filtering Antenna Using Two Inverted Resonator Structures for 5G Application

“…A multilayer filtering antenna using a cross-radiator and square ring slot as resonators performed dual-polarization [8]; however, it did not explain about the controllable bandwidth method and the vertical/horizontal polarization could not combat the multipath fading effect. Though some studies have discussed methods to obtain ±45° polarization in a filtering antenna, these methods required a physical rotation of the radiator and feedline because the designs did not exhibit a function to control the polarization and bandwidth [9]- [12]. In [9] and [10] a filtering antenna with a 45° slant polarization was developed by rotating the dipole antenna element, though utilizing the filtering element, no controllable bandwidth and polarization was achieved by the resonator.…”