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A low-profile ±45º dual-polarized antenna based on metasurface and its arrays for base station applications

Author

Listed:
  • Son Xuat Ta
  • Minh Duc Nguyen
  • Thi Hai-Yen Nguyen
  • Truong Khang Nguyen
  • Khac Kiem Nguyen
  • Chien Dao-Ngoc

Abstract

This paper presents a low-cost, low-profile,±45º dual-polarized antenna based on metasurface for base station applications. The antenna consists of two ±45º printed dipoles, which are fed by novel printed baluns for allowing broad operational bandwidth and a high port-to-port isolation. The antenna is backed by a metallic cavity reflector to obtain the broadside radiation. The metasurface, which is a periodic lattice of square patches printed on a thin low-cost substrate, is inserted between the radiator and the reflector to achieve the low-profile. The single element with an overall size of 160 mm × 160 mm × 16 mm (0.96λo × 0.96λo × 0.096λo at 1.8 GHz) yields a voltage standing wave ratio (VSWR) 29% for both ports, an isolation of >34 dB, a gain of >8.4, and a radiation efficiency of >80%. Also, a four-element array based on the proposed antenna is fed by non-uniform feeding networks to achieve a low sidelobe level (SLL). The array yielded an isolation of > 20 dB, a gain of >11.7 dBi, and an SLL of

Suggested Citation

  • Son Xuat Ta & Minh Duc Nguyen & Thi Hai-Yen Nguyen & Truong Khang Nguyen & Khac Kiem Nguyen & Chien Dao-Ngoc, 2018. "A low-profile ±45º dual-polarized antenna based on metasurface and its arrays for base station applications," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 32(14), pages 1748-1767, September.
    • Handle: RePEc:taf:tewaxx:v:32:y:2018:i:14:p:1748-1767
    DOI: 10.1080/09205071.2018.1468284
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