Novel modified monopole antenna with band-notch characteristic for UWB application

Abstract

Abstract:A novel modified printed monopole antenna with variable frequency band-notch characteristic for ultra-wideband (UWB) applications is presented. The proposed antenna consists of a truncated ground plane and a radiating patch with two tapered steps. To generate a notch band at 5-6 GHz with good level of band-notch a new T-shaped parasitic element placed on the back layer of the substrate along with a simple circular slot etched on the patch is implemented. The proposed antenna has a compact size of 14 × 20 mm 2 , a measured impedance bandwidth of 3.05 to 14.7 GHz for VSWR < 2 and exhibits an omni-directional H-plane radiation pattern throughout the UWB frequency range.

A novel and compact ultra‐wideband printed monopole antenna with enhanced bandwidth and dual‐band stop properties

“…Some UWB antennas with single band-stop functions have been reported in the literature. 6,7 However, to effectively operate within the UWB spectrum and enhance the performance of the designed UWB antenna, it is favorable to design these structures with dual bandrejection functions. This has previously been executed by using the inverted U-shaped and Iron shaped parasitic resonators, 8 by putting a modified G-slot defected ground structure (DGS) in the feed line and two Γ-shaped stubs in the radiation patch, 9 combining mushroom-shaped EM-bandgap and a slot, 10 by using four crescent-shaped nested rings, 11 or employing a pair of U-shaped parasitic strips and a T-shaped stub embedded in the radiating patch.…”

“…Some UWB antennas with single band‐stop functions have been reported in the literature 6,7 . However, to effectively operate within the UWB spectrum and enhance the performance of the designed UWB antenna, it is favorable to design these structures with dual band‐rejection functions.…”

Compact band-rejection printed monopole antenna for UWB application

“…The frequency range for UWB systems between 3.1 to 10.6 GHz will cause interference to the existing wireless communication systems, for example the wireless local area network (WLAN [4]; modified printed monopoles with T-shaped conductor-backed plane [5]; inverted U-shaped slot embedded in the uniform microstrip line [6], and so on. Nevertheless, most of these antennas have the common deficiency of large size, which may lead to a challenging task in miniaturizing antenna design.…”

Compact ultra‐wideband printed monopole antenna having frequency band‐notch characteristic using defected ground structure

“…The frequency range for UWB systems between 3.1 and 10.6 GHz will cause interference to the existing wireless communication systems, for example the wireless local area network (WLAN) for IEEE 802.11a operating in 5.15–5.35 and 5.725–5.825 GHz bands, so the UWB antenna with a band‐notch performance is required. To overcome this problem, various antennas with band‐notch functions have been developed for UWB communications [6–12]. Nevertheless, most of these antennas have the common deficiency of large size, which may lead to a challenging task in miniaturizing antenna design.…”