Design of a UWB printed G-shaped monopole antenna using characteristic modes

Abstract

Abstract-This paper presents a novel G-shaped compact monopole UWB antenna printed on FR4 substrate with coplanar waveguide (CPW) feeding. The proposed antenna operates over the frequency band between 3 and 11 GHz offering a fractional impedance bandwidth of around 110 %. The antenna is designed by analysing the modal currents calculated using the characteristic mode theory. Experimental results on reflection coefficient agree well with simulations and the proposed antenna has a desirable gain and radiation pattern characteristics over the ultra-wideband frequency range. The overall dimensions of the antenna are 28 × 35 × 1.6 mm 3 which makes it a good candidate for many ultra-wide-band radio applications.

Printed Monopole Antenna with Tree-Like Radiating Patch and Flower Vase-Shaped Modified Ground Plane Useful for Wideband Applications

“…Using a defected ground structure, a rectangular antenna was found to provide 4.6 GHz bandwidth with a 4.3 dBi gain, as reported in [18]. A G-shaped co-planar wave guide feed antenna was used for broadband applications in [19]. UWB was achieved using a folded patch and asymmetric ground plane in [20].…”

International Journal of Electronics and Telecommunications

“…The measured and simulated outputs show a little discrepancy due to the fabrication tolerances and the soldering of the connector to the feed line. As shown in Table 2, the dimensions and bandwidth of the proposed work are compared with the performance of existing antennas provided in references [5][6][7][8][9][10][11][12][13][14][19][20][21]. The proposed model is compact in comparison with [5][6][7][8][9][10][11][12][13][14][19][20][21] for UWB operation.…”

“…As shown in Table 2, the dimensions and bandwidth of the proposed work are compared with the performance of existing antennas provided in references [5][6][7][8][9][10][11][12][13][14][19][20][21]. The proposed model is compact in comparison with [5][6][7][8][9][10][11][12][13][14][19][20][21] for UWB operation. Therefore, the proposed model is the finest in terms of compactness and can maintain a constant gain in the working UWB frequency band.…”

“…Recently, the use of the CMA in enlightening the physical significance of antennas has become increasingly popular [15]. it is simpler in describing radiating objects of any shape, and provides sufficient information to understand the mechanism of the radiation behind the operation of antenna performance and is attracted by many researchers, primarily for multipleinput and multiple-output (MIMO) antenna [16], wideband and multiband antennas [17,18], and UWB antenna designs [19][20][21].…”