【摘要】 利用HFSS软件研究了一种基于RFID的工作在902～928MHz频段的小型圆极化微带天线;结果表明:通过调节天线的介质板上圆孔的体积可有效地改善轴比和增益;而采用加载结构电容的方法可有效地、方便地匹配阻抗,以解决一般阅读器天线不好加载匹配的问题。更多还原

【Abstract】 A small circularly polarized microstrip antenna which works at 902~928 MHz for RFID is studied using software HFSS.Results show that by adjusting the volume of the round hole on the medium board,both gain and axial ratio are improved effectively and that using the loaded structure electric capacity,impedance is matched effectively and conveniently so that the problem is solved that it is hard to load match for reader antennas.更多还原