This paper presents the detailed design, analysis and measurements of new configuration of quad-band antenna. The antenna is designed using a new uni-planar complementary split ring resonator (UP-CSRR) unit cell. The UP-CSRR unit cell is etched in the top plane of a microstrip patch which reduces the back radiation and enhances the antenna efficiency. The structure has advantage of the presence of complete ground plane that supports a typical broadside radiation. The designed antenna is resonating at 1.9, 3.3, 3.9 and 4.2 GHz with reflection coefficient lower than –10 dB. Moreover, the antenna has a patch size of 3.5 cm × 4 cm which is a consequence of the new IP-CSRR configuration smaller size compared to conventional CSRR.

本文介绍了四频天线新配置的详细设计，分析和测量。天线是使用新型单平面互补开口环谐振器（UP-CSRR）单元设计的。UP-CSRR晶胞在微带贴片的顶面上进行蚀刻，可减少反向辐射并提高天线效率。该结构的优点是存在完整的接地平面，可以支撑典型的宽边辐射。设计的天线在1.9、3.3、3.9和4.2 GHz处谐振，反射系数低于–10 dB。此外，天线的贴片尺寸为3.5 cm×4 cm，这是由于新IP-CSRR配置的尺寸比传统CSRR小。