Simple and Compact Dual Band-Notched Monopole Antenna Using U-Shaped Forms on the Conductor-backed Plane for UWB Applications

摘要

A planar ultra-wideband antenna with dual band-notched characteristics is proposed. The main features of the proposed antenna are the extremely compact dimensions and band-notched characteristics that are obtained without modifying the radiator. The dual band-notched characteristics are achieved by a pair of mirror U-shaped slots and an inverted U-shaped slot at the conductor-backed plane. The measured results of the manufactured (15 mm × 15 mm) antenna on 1.6 mm FR4 substrate show that the antenna operates with VSWR less than two over the frequency band from 3 GHz to 11.2 GHz. That wideband is featured by the existence of two notched bands VSWR is more than five aimed at suppressing any interference from IEEE802.11a WLAN 5 GHz (5.15 GHz - 5.825 GHz) and ITU 8 GHz (8.025 GHz - 8.4 GHz) band. The antenna has a desirable VSWR level, radiation pattern, and gain characteristics for ultra wideband frequency band range.