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给出了一种紧凑的可用于WUSB的新型带陷超宽带印刷单极子天线.天线由内嵌条带的U形环组成并采用部分接地技术,从而使天线具有带陷超宽带特性.实测结果表明该天线输入端驻波比小于2的绝对阻抗带宽为7.88GHz,覆盖了3.12 ～11GHz的频率范围,其中5.06 ～5.89GHz范围内具有带阻特性.讨论了各几何参数对天线性能的影响,同时获得了该天线相对稳定的、近似全向且对称的测试方向图.由于此种天线无需额外的带阻滤波器来隔离天线与其他通信系统的干扰,从而大大简化了WUSB系统的设计.
A new compact ultra-wideband monopole printed monopole antenna with WUSB is presented.The antenna is composed of a U-shaped ring embedded with a strip and partially grounded so that the antenna has ultra-wide band characteristics. The results show that the absolute impedance bandwidth of the antenna with VSWR less than 2 is 7.88GHz, covering the frequency range of 3.12-11GHz, with the band-stop characteristic in the range of 5.06-5.89GHz.The influence of each geometric parameter on the antenna performance is discussed , And at the same time obtain a relatively stable and nearly omnidirectional and symmetrical test pattern of the antenna, which greatly simplifies the design of the WUSB system because it does not require additional band-stop filters to isolate the antenna from other communication systems.