Title :
Broadband circularly polarised antenna with asymmetric ground and L-shaped strips
Author :
Huan Zhang ; Yong-Chang Jiao ; Tao Ni ; Wei-Long Liang
Author_Institution :
Nat. Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´an, China
Abstract :
A novel broadband circularly polarised antenna fed by a coplanar waveguide (CPW) is proposed. Two L-shaped grounded strips and an asymmetrical ground are utilised to achieve the broadband circular polarisation (CP) feature. The measured results show that the 10 dB impedance bandwidth of the antenna is 2.01 GHz (69.4%, 1.89-3.9 GHz) and the 3 dB axial ratio (AR) bandwidth is 2.1 GHz (72.4%, 1.85-3.95 GHz). The experimental results agree well with the simulated results.
Keywords :
UHF antennas; antenna feeds; broadband antennas; coplanar waveguide components; electromagnetic wave polarisation; microwave antennas; CPW feedline; L-shaped grounded strips; asymmetrical ground; axial ratio; bandwidth 2.01 GHz; bandwidth 2.1 GHz; broadband circularly polarised antenna; coplanar waveguide feedline; frequency 1.85 GHz to 3.95 GHz;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.2989
