Design of a Compact Monopole Antenna for UWB Applications

Abstract

In this paper, a low cost, highly efficient and low profile monopole antenna for ultra-wideband (UWB) applications is presented. A new inverted triangular-shape structure possessing meander lines is designed to achieve a wideband response and high efficiency. To design the proposed structure, three steps are utilized to achieve an UWB response. The bandwidth of the proposed antenna is improved with changing meander lines parameters, miniaturization of the ground width and optimization of the feeding line. The measured and simulated frequency band ranges from 3.2 to 12 GHz, while the radiation patterns are measured at 4, 5.3, 6 and 8 GHz frequency bands. The overall volume of the proposed antenna is 26 × 25 × 1.6 mm 3 ; whereas the FR4 material is used as a substrate with a relative permittivity and loss tangent of 4.3 and 0.025, correspondingly. The peak gain of 4 dB is achieved with a radiation efficiency of 80 to 98% for the entire wideband. Design modelling of proposed antenna is performed in ANSYS HFSS 13 software. A decent consistency between the simulated and measured results is accomplished which shows that the proposed antenna is a potential candidate for the UWB applications.

A tapered feed UWB-MIMO antenna with high characteristics based on fractal method

“…The ultra-wideband range can be achieved with an impedance bandwidth parameter of 8-9 GHz and an average gain of 4-8 dBi. Similar to this, a low-profile monopole antenna with an effective pick gain of 4 dBi and an absolute bandwidth of 8.8 GHz is suggested for use in ultra-wideband applications [16]. According to [17], there has also been research on a foam substrate printed with a flower budshaped antenna for use in ultrawideband (UWB) applications.…”

“…The literature [11][12][13][14][15][16][17][18] has presented several modified proposals for ultra-wideband technologies. A small UWB antenna with an impedance bandwidth of 10.354 GHz and a pick gain of 4.7 dBi for a variety of applications was reported by the researchers in [11].…”

Koch Snowflake Fractal Embedded Octagonal Patch Antenna with Hexagonal Split Ring for Ultra-wide Band and 5G Applications

“…Although limitations like narrow bandwidth, impedance mismatch, and poor gain are quoted on conventional patch antennas, there are various advancements made on different sections of patch antennas to overcome their constraints. The implementation of fractal structures in the conventional patch antennas will miniaturize the size of the antenna and allow the antenna to operate from lower to higher frequency [2][3][4]; employing Flame Retardant 4 (FR4) as its dielectric medium for better reliability and mechanical strength [5]; implementation of Split ring resonators to the antenna design will engage LC tuning circuit which enhance the radiation effects of the antenna [6]; incorporating CPW feed and ground may enhance the bandwidth ratio and impedance bandwidth of the antenna [7].…”

A Four Element Stringray-Shaped MIMO Antenna System for UWB Applications

“…Several UWB antenna systems are developed in the literature [11][12][13][14][15][16]. In [11], a planar monopole antenna is presented, demonstrating an impedance bandwidth spanning from 3.2 GHz to 10.6 GHz.…”

“…Several UWB antenna systems are developed in the literature [11][12][13][14][15][16]. In [11], a planar monopole antenna is presented, demonstrating an impedance bandwidth spanning from 3.2 GHz to 10.6 GHz. The achievement of an ultra-wideband (UWB) response is primarily attributed to specific design modifications.…”