摘要
设计了一种紧凑的具有三陷波特性的超宽带天线。天线采用渐变微带线馈电,并通过矩形加半圆的辐射单元和半圆形地板来实现超宽带。通过在辐射单元上刻蚀对称的L形槽和圆环形槽,来实现在WLAN/WiMAX的陷波特性;在渐变微带馈线两侧增加对称的C形谐振器来达到在X频段的陷波特性。实验结果表明,天线在2.68~13GHz频段内电压驻波比小于2,同时在3.1~3.8GHz,5~5.9GHz,7.25~7.85GHz频段内有陷波抑制作用,且具有良好的辐射特性。天线具有较小的几何尺寸,仅为20mm×30mm。
A compact UWB antenna with triple-band notched feature is designed in this paper.The antenna consists of a rectangular radiating patch with a half circle at bottom,a tapered microstrip feed-line,and a semielliptical ground plane.With a symmetrical L-shaped slots and circular grooves etched on the radiating elements,the bandnotched characteristics of WLAN/WiMAX are created.The experimental results show that the voltage standing wave ratio(VSWR)of the designed antenna is less than 2 at the operating band from 2.68 GHz to 13 GHz;meanwhile,the notch suppression is realized at the operating band from 3.1 GHz to 3.8 GHz,5 to 5.9 GHz,7.25 to7.85 GHz and good radiation patterns within the operating band have been observed.The antenna has compact size of only 20 mm×30 mm.
出处
《压电与声光》
CSCD
北大核心
2017年第5期794-796,共3页
Piezoelectrics & Acoustooptics
关键词
超宽带天线
微带天线
三陷波
L形槽
C形谐振器
UWB
m ic ro s tr ip a n te n n a
notched b a n d s
L-shaped s lo t s
C-shaped s tu b s