Low profile wideband circular patch antenna surrounded by mushroom-type structure

[摘要] A novel low profile wideband circular patch antenna is proposed for millimetre-wave applications. Seven mushroom units are uniformly placed along with the edge of the circular driven patch. Two resonant modes, TM 10 mode and quasi-TM 30 mode, are generated by the driven patch and mushroom-type structure, respectively. These two modes will move in proximity to each other by optimising the size and location of mushroom-type structure, resulting in wideband performance. Compared with our previous work, the proposed antenna owns the advantage of low profile and rotational symmetric structure. Therefore, the radiation performance is improved. Measured results show that the impedance bandwidth of 26.4% from 12.2 to 15.9 GHz is obtained with a low profile less than 0.047 λ 0 .

[学科分类] 计算机科学（综合）