Very Compact Quad Band-Notched UWB Monopole Antenna

摘要

A very compact UWB antenna with four notched bands is proposed. 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 pair of L-shaped slots, complementary co-directional SRR on the patch and a pair of L-shaped slots on the ground plane, four notched bands are created to prevent interference from WiMAX/WLAN/X-band. Experimental results show that the designed antenna, with compact size 20×30mm~2, has an operating band (VSWR<2) from 2.7 to 20GHz, except four stop bands of 3.1～3.7GHz, 5.13～5.48GHz, 5.74～6.04GHz, 7.3～7.96GHz. And good radiation patterns within the operating band have been observed.