Uwb Monopole Antenna With Dual Notched Bands Verified by Characteristic Mode Analysis (Cma)

Abstract

An ultra-wideband (UWB) antenna with dual band notched characteristics verified by characteristic mode analysis (CMA) is presented. The intended UWB radiator is etched on a Rogers RT5880 substrate with a size of 29 × 35 × 0.764 mm 3 , operating over a spectrum of 2.66-14.86 GHz with a fractional bandwidth (FBW) of 139%. Dual notched bands at WiMAX (3.01-3.63 GHz) and WLAN (4.48-5.85 GHz) are achieved by embedding L-shaped stubs in the notched rectangular patch. In addition, the two notched bands of the reported antenna are verified by using characteristic mode analysis (CMA) in terms of modal significance (MS) and characteristic angle (CA). The reported antenna's simulated and tested results are well matched to obtain S 11 , VSWR, stable radiation patterns, a stable peak gain of 2.65 to 3.6 dBi, and the maximum radiation efficiency of 97.86% in frequency domain, which make the intended radiator suitable for portable UWB applications.

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

“…12 Additionally, various other methods have been employed to introduce dual band-stop characteristics for rejecting the interference in the UWB antennas. [13][14][15][16][17][18][19][20] However, most of the designs have large footprints and average performances (in terms of peak gain, radiation pattern, etc. ).…”

“…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 12 . Additionally, various other methods have been employed to introduce dual band‐stop characteristics for rejecting the interference in the UWB antennas 13–20 . However, most of the designs have large footprints and average performances (in terms of peak gain, radiation pattern, etc.…”

Design of a Compact Dual Slot Loaded Planar Monopole Antenna with Dual Band Rejection Properties for Wideband Applications

“…A ultra-wideband (UWB) radiator is etched on a Rogers RT5880 substrate with a size of 29 × 35 × 0.764 mm 3 , operating over a spectrum of 2.66-14.86 GHz with a fractional bandwidth (FBW) of 139%. Dual notched bands at WiMAX (3.01-3.63 GHz) and WLAN (4.48-5.85 GHz) are obtained by etching L-shaped stubs on radiating patch [3]. By presenting a pair of C-shaped parasitic elements and a complementary capacitively loaded loop (CCLL) slot in the ground plane, dual notched bands are accomplished for WLAN band (4.9-6 GHz) and IEEE INSAT C-band/Xband (6.725-7.1 and 7.25-8.4 GHz) satellite services with a gain of 2.7 dBi [4].…”