Title :
Miniaturised ultra-wideband circularly polarised antenna with modified ground plane
Author :
Shokri, M. ; Rafii, V. ; Karamzadeh, S. ; Amiri, Z. ; Virdee, B.
Author_Institution :
Young Res. & Elite Club Urmia Branch, Islamic Azad Univ., Urmia, Iran
Abstract :
A unique coplanar-waveguide (CPW)-fed circularly polarised square slot antenna with enhanced impedance bandwidth (IBW) is presented. The antenna structure includes a pair of rectangular-shaped notches located at two opposite corners of the slot for achieving a significantly enhanced IBW of 12.06 GHz (2.76-14.82 GHz), and a pair of reverse L-shaped ground arms in the slot for realising circularly polarised radiation with 1.86 GHz (4.27-6.13 GHz) bandwidth. This proposed technique has the advantages of covering the whole of the ultra-wideband spectrum (3.1-10.6 GHz), an average gain of 3 dBi and a reduced antenna size of 25 × 25 × 0.8 mm3.
Keywords :
UHF antennas; antenna feeds; microwave antennas; slot antennas; ultra wideband antennas; CPSSA; UWB spectrum; antenna structure; bandwidth 1.86 GHz; bandwidth 12.06 GHz; circularly polarised radiation; coplanar-waveguide-fed circularly polarised square slot antenna; enhanced impedance bandwidth; frequency 2.76 GHz to 14.82 GHz; frequency 3.1 GHz to 10.6 GHz; frequency 4.27 GHz to 6.13 GHz; miniaturised ultrawideband circularly polarised antenna; modified ground plane; rectangular shaped notches; reverse L-shaped ground arms; ultra-wideband spectrum;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.3278
