Novel UWB Planar and Minimized Antennas Based on Composite Right/Left-Handed Transmission Lines for Electromagnetic Applications

摘要

In this paper, two novel ultra wideband (UWB) minimized antennas based on the composite right/left-handed transmission lines (CRLH-TLs) structures are designed. The proposed antennas are presented with best in size, bandwidth and radiation patterns. To realize characteristics of the antennas ψ-shaped gaps print into radiation patches are used. Overall sizes of the CRLH antennas are 24.8mm by 9.5mm by 1.6mm and 37.2mm by 9.25mm by 1.6mm, respectively. These antennas can cover the frequencies bandwidths from 2.8-11.8GHz and from 2.1-11.7GHz for VSWR < 2. The antennas highest gains and maximum radiation efficiencies are 7.71dBi and 54.93% at operation frequency 11GHz for first antenna and 7.02dBi at f=11.7GHz and 61% at f=10GHZ for second antenna, respectively.