A compact rectangular microstrip-fed Ultra Wideband patch antenna with double band notched feature at Wi-Max and WLAN is offered in this paper. The designed antenna is composed of an ordinary rectangular patch antenna with a partially defective ground structure. For achieving dual notch characteristics a ‘U’ and ‘Reversed U’ slots are embedded in the radiating patch. The partial ground plane structure with U shaped slot in the middle is incorporated for achieving additional resonance and bandwidth enhancement. The proposed antenna has a measurement of 20 × 33 × 1.6 mm³. First notch created by U shaped slot at frequency 3.5 GHz is for Wi-Max (from 2.9 to 4.5 GHz) and Second notch which is generated by Reversed U shaped slots at frequency 5.4 GHz is for WLAN (from 5.49 to 6.45 GHz). The antenna covers almost complete range of Ultra Wideband (3.1–10.6 GHz). The Simulation analysis of the proposed antenna is carried out using CST-2011 simulation software. The radiation pattern of the simulated antenna is near Omnidirectional and the Gain of proposed antenna is almost stable over the range of UWB excluding notch bands.

本文提供了一种紧凑的矩形微带馈送的超宽带贴片天线，该天线在Wi-Max和WLAN上具有双频带陷波功能。设计的天线由具有部分缺陷接地结构的普通矩形贴片天线组成。为了实现双槽口特性，在辐射贴片中嵌入了“ U”和“反向U”槽。结合了中间具有U形槽的局部接地平面结构，以实现额外的谐振和带宽增强。建议的天线尺寸为20×33×1.6 mm ³。U形槽在3.5 GHz频率处产生的第一个凹口用于Wi-Max（从2.9到4.5 GHz），而反向U形槽在5.4 GHz频率处产生的第二个槽口用于WLAN（从5.49到6.45 GHz）。天线几乎覆盖了整个超宽带范围（3.1–10.6 GHz）。拟议天线的仿真分析是使用CST-2011仿真软件进行的。模拟天线的辐射方向图接近全向，建议的天线增益在除陷波频段之外的UWB范围内几乎稳定。