A Dual-polarized UWB Antenna Fed by a New Balun for Electronic Reconnaissance System Application

Authors

  • Jian Wu 1 School of Mechatronic Engineering and Automation Shanghai University, Shanghai 200072, P.R. China ,2 Shanghai Microwave Equipment Research Institute Shanghai 201802, P.R. China
  • Xiaojin Zhu School of Mechatronic Engineering and Automation Shanghai University, Shanghai 200072, P.R. China

Keywords:

Balun, CPS, dual polarization, electronic reconnaissance system, UWB, Vivaldi

Abstract

For a practical engineering application, a printed ultra-wide band (UWB) antenna with dual polarization is presented in this paper. An integrated Balanced-to-unbalanced (Balun) transformer from microstrip line to coplanar stripline (CPS) is designed, which is employed to feed the symmetrically coplanar Vivaldi radiator. Two substrates are used to support the Vivaldi radiators which are orthogonally mounted. The proposed antenna can build two orthogonal UWB channels and receive two polarization components of incident electromagnetic signal. By bending the balanced coplanar striplines, the cross placement of two polarization radiators can be easily realized, which is suitable for the engineering application. A dualpolarized Vivaldi antenna with the frequency range from 2.5GHz to 6GHz was simulated and fabricated. The measured indicated that the average return loss of designed antenna is less than -10dB and the port isolation degree is about 20dB with the operational frequency range, the gains are about larger than 3dB and the average cross polarization levels are about -20dB. The research results verify the feasibility of the proposed antenna scheme. The presented dual-polarized antenna has the advantages of easy design, high port isolation and convenient engineering application, which can be used in the fields such as electronic reconnaissance system.

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How to Cite

[1]
Jian Wu and Xiaojin Zhu, “A Dual-polarized UWB Antenna Fed by a New Balun for Electronic Reconnaissance System Application”, ACES Journal, vol. 35, no. 6, pp. 684–691, Jun. 2020.

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