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A novel dual-band dual-polarized shared-aperture antenna with high isolation
International Journal of Microwave and Wireless Technologies ( IF 0.703 ) Pub Date : 2020-05-04 , DOI: 10.1017/s1759078719001454
Jiachen Xu; Bozhang Lan; Jiakai Zhang; Chenjiang Guo; Jun Ding

This paper presents a novel dual-band (DB) dual-polarized (DP) shared aperture antenna with high isolation by using a combination of microstrip dipoles and dielectric resonator antennas (DRAs) for S and C bands, respectively. In the S band, two sets of proximity coupled stacked microstrip dipoles which crossed at the center are employed to achieve dual-linear polarization (DLP) and obtain desired bandwidth (BW), isolation, and pure polarization. The rectangle DRA with hybrid feed is selected as the C band element for its advantages of small base area and high isolation, and a 2 × 2 array is presented with the “pair-wise” anti-phase feed technique to achieve a low cross-polarized level. Moreover, benefited from the back feed scheme, the proposed antenna has a symmetrical structure and has the potential of expanding into a larger aperture. The proposed antenna has been manufactured and measured, and the results agree well with simulations, which prove the validity of the proposed design.
更新日期:2020-05-04

 

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