Abstract
A compact wide-beam scanning dual-polarized (DP) array is designed for millimeter-wave (mmWave) applications in mobile terminals. The element is a coupled shorted patch antenna with quarter-wavelength resonance. Orthogonally slot coupled feeding is used to achieve the DP radiation. A close element distance of 0.4λ0 is chosen to construct the array. In order to decrease the coupling between close elements, the elements’ positions are misaligned. Finally, the proposed DP mmWave array with a small size of 1.39λ0 × 0.42λ0 is achieved. A bandwidth of 24–28 GHz is realized for both polarizations. Within this band, the mutual couplings among adjacent elements are below −15 dB and the isolations between DP ports are above 20 dB. A wide 3 dB beam scanning range of ±60° for horizontal polarization radiation and ±50° for vertical polarization radiation is achieved. Within the beam scanning range, an acceptable less than −6.2 dB sidelobe level and a moderate below −15 dB cross-polarization level can be maintained. This compact wide-beam scanning DP mmWave array has the potential for future applications of mobile terminals.
Original language | English |
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Pages (from-to) | 763-767 |
Number of pages | 5 |
Journal | IEEE Antennas and Wireless Propagation Letters |
Volume | 23 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Feb 2024 |
Externally published | Yes |
Keywords
- Millimeter-wave (mmWave) antenna
- mobile terminals
- phased array
- wide-beam scanning