Vol. 20

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A Novel Double-Petal Loop Element for Broadband Reflectarray

By Li-Shi Ren, Yong-Chang Jiao, Fan Li, Jin-Juan Zhao, and Gang Zhao
Progress In Electromagnetics Research Letters, Vol. 20, 157-163, 2011


In this paper, a reflectarray antenna composed of a combination of double-petal loops of variable size is presented. To evaluate the performance of the designed element, a parametric study is carried out using Ansoft HFSS. For the optimal parametrics, the proposed structure shows an almost linear behavior, while the phase range is in excess of 500°. Then, a prime-focus 77-element reflectarray with this type of element has been designed and implemented. The measured results show that the obtained 1-dBi gain bandwidth of the reflectarray with double-petal loop elements can reach as large as 25% and the highest gain is about 19.3 dBi. Compared with the existing single layer elements (cross and rectangle loop, double rings, etc), microstrip reflectarray with this double-petal loop element can obtain a larger bandwidth.


Li-Shi Ren, Yong-Chang Jiao, Fan Li, Jin-Juan Zhao, and Gang Zhao, "A Novel Double-Petal Loop Element for Broadband Reflectarray," Progress In Electromagnetics Research Letters, Vol. 20, 157-163, 2011.


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