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Shokri, Majid, Virdee, Bal Singh, Rafii, Vahid, Amiri, Zhaleh and Karamzadeh, Saeid (2014) Miniaturised ultra-wideband circularly polarised antenna with modified ground plane. Electronics Letters, 50 (24). pp. 1786-1788. ISSN 0013-5194
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.
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