This paper presents a compact zeroth-order resonator antenna by using meandered arm on Jerusalem geometry in mushroom-like structure. The proposed antenna consists of two main elements including the modified Jerusalem shape in mushroom-like structure and microstrip-fed transmission line. Both of them can cooperate together to perform the zeroth-order of phase constant at the operating frequency of the proposed antenna. The antenna has very compact area of radiating patch with 20 45 mm2. Then, the omnidirectional radiation pattern can be provided in the plane of antenna patch.
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This paper presents a compact zeroth-order resonator antenna by using meandered arm on Jerusalem geometry in mushroom-like structure. The proposed antenna consists of two main elements including the modified Jerusalem shape in mushroom-like structure and microstrip-fed transmission line. Both of them can cooperate together to perform the zeroth-order of phase constant at the operating frequency of the proposed antenna. The antenna has very compact area of radiating patch with 20 45 mm2. Then, the omnidirectional radiation pattern can be provided in the plane of antenna patch.