Abstract
In this communication, a phased array antenna with an integrated metasurface is designed to achieve wideband and wide-angle scanning. Generally, the coupling between adjacent elements changes significantly as the scanning angle increases, resulting in limited scanning coverage. Two mutually perpendicular metasurface slabs are designed to achieve wide-angle scanning. The mutual coupling is reduced by properly tuning the dimension of the metasurface. Two perpendicular linear arrays were fabricated to verify the design. The measured 3 dB beamwidth of the active element pattern (AEP, in the array environment) with the integrated metasurface is about 150° in the E-plane and 109° in the H-plane, which is suitable for wide-angle scanning. The simulated and measured results indicate that the beam can scan from -78° to 78° with a 3 dB gain fluctuation in the E-plane array and a wide frequency range from 10 to 12.5 GHz (22.2%). In the H-plane array, the scan angle ranges from -69° to 69° with a 3 dB gain fluctuation and a relative bandwidth of 11%.
Original language | English |
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Pages (from-to) | 9003-9008 |
Number of pages | 6 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 69 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Dec 2021 |
Keywords
- Beam-scanning
- Vivaldi
- metasurface slab
- mutual coupling
- phased array
- wide-angle
- wideband