The present invention provides to an antenna. The antenna includes a piezoelectric-substrate layer; and a quasi-fractal radiating layer disposed on the piezoelectric-substrate layer and having a quadrangle sub-structure and a similar structure that is formed by a nth-order self-similar iteration process including a trimming step, a scaling step and a combining step on the basis of the quadrangle sub-structure, where n is an integer greater than zero.
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