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Wide-Angle Scanning Phased Array Antennas Using Metasurface Slabs
- Source :
- IEEE Transactions on Antennas and Propagation. 69:9003-9008
- Publication Year :
- 2021
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2021.
-
Abstract
- In this paper, 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 GHz 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%.
Details
- ISSN :
- 15582221 and 0018926X
- Volume :
- 69
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Antennas and Propagation
- Accession number :
- edsair.doi...........a0a6f6a70bbe203873822a563db5d815