Triple band‐notched ultra‐wideband antenna using a pair of novel symmetrical resonators

Abstract

In this study, a novel microstrip‐fed planar antenna with triple notched bands is presented for various ultra‐wideband (UWB) applications. The antenna comprises a circular radiating patch, a 50 Ω microstrip feed line, a partially slotted ground plane, and a couple of modified capacitance loaded loop (MCLL) resonators. The novel MCLL resonators are symmetrically located near the feed line to achieve the triple band‐notched characteristics, such as 3.4–3.7 GHz for WiMAX, 5.15–5.825 GHz for wireless local area network and 7.25–8.395 GHz for X‐band satellite communication. The good performance of triple notched bands, stable gain and omnidirectional radiation patterns in the operating bands make the proposed antenna a good candidate for UWB utilisation.