Abstract
This article presents a novel dual slant polarized antenna for millimeter-wave (mmWave) base stations. Compared with the traditional slant polarized mmWave antennas, the proposed antenna offers the advantages of high cross-polarization discrimination (XPD), good aperture efficiency, simple structure, and low profile. The corner-fed substrate integrated waveguide (SIW) cavity is adopted to improve the port isolation and XPD of this slot-coupled antenna. Four corner-truncated patches connected by a thin cross strip are placed over the SIW cavity to increase the operation bandwidth. Then, a 2×8antenna array is designed to exemplify the antenna element performance. To improve the impedance matching, a shorted patch is introduced in designing the series feeding network and the power divider. The experimental results show that the 2 dB-down gain bandwidth of the proposed antenna array reaches 6.0% and the port isolation is better than 20 dB. The gain and XPD of the antenna array measure 16.7 dBi and 25 dB at the center frequency, respectively.
Original language | English |
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Pages (from-to) | 1404-1413 |
Number of pages | 10 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 69 |
Issue number | 3 |
Early online date | 24 Aug 2020 |
DOIs | |
Publication status | Published - 1 Mar 2021 |
Keywords
- 5G
- base station
- cavity-backed antenna
- dual-polarized antenna
- millimeter-wave (mmWave)
- patch antenna
- slant polarization
- slot-coupled antenna
- substrate integrated waveguide (SIW) cavity