Implementation and investigation of U-shaped aperture UWB antenna with dual band-notched characteristics

Abstract

The design and analysis of an ultra-wideband (UWB) aperture antenna with dual band-notched characteristics are presented. The antenna consists of a circular exciting stub on the front side and a U-shaped aperture on the back ground plane. By inserting a slot and a parasitic strip to the antenna, dual notched frequency bands are achieved. A conceptual circuit model, which is based on the measured impedance of the proposed antenna, is also shown to investigate the dual band-notched characteristics. The measured impedance bandwidth defined by VSWR<2 of 9.0 GHz (2.2–11.2 GHz), with the dual bands of 3.25–4.25 and 5.0–6.05 GHz notched, is obtained.