A Simple Ultrawideband Planar Rectangular Printed Antenna With Band Dispensation

被引:135
作者
Thomas, K. George [1 ]
Sreenivasan, M. [1 ]
机构
[1] SAMEER Ctr Electromagnet, Madras 600113, Tamil Nadu, India
关键词
Band-notched antenna; capacitive coupling; planar monopole; ultrawideband (UWB); MONOPOLE ANTENNA;
D O I
10.1109/TAP.2009.2036279
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A compact planar ultrawideband (UWB) antenna with band notched characteristics is presented. Modification in the shape of radiation element and ground plane with two symmetrical bevel slots on the lower edge of the radiation element and on the upper edge of the ground plane makes the antenna different from the rectangular printed monopole. These slots improve the input impedance bandwidth and the high frequency radiation characteristics. With this design, the reflection coefficient is lower than 10 dB in the 3.1-10.6 GHz frequency range and radiation pattern is similar to dipole antenna. With the inclusion of an additional small radiation patch, a frequency-notched antenna is also designed and good out of band performance from 5.0-6.0 GHz can be achieved. Measured results confirm that the antenna is suitable for UWB applications due to its compact size and high performance. Also an approximate empirical expression to calculate the lowest resonant frequency is proposed.
引用
收藏
页码:27 / 34
页数:8
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