A novel offset feed flared monopole quasi‐Yagi high directional UWB antenna

Abstract

This article is aimed to discuss a novel high directional flared quasi-Yagi offset feed monopole UWB antenna. The proposed antenna is stamped on an FR-4 dielectric material of dimensions 40 mm × 48 mm × 1.6 mm, which is exhibiting a permittivity of 4.4 and a loss tangent of 0.019. It operates within a frequency spectrum of 3.06 to 12.37 GHz that includes the complete FCC ultra-wideband of 3.1 to 10.6 GHz. Maximum peak gain and radiation efficiency of this antenna are found to be 10.07 dBi at 10.4 GHz and 92.64% at 4.7 GHz, respectively. The presented antenna employs a novel structure comprising of flared elements, directors and offset feed to a planar monopole for achieving directional behaviour. Thanks to the novel technique for enhancing uni-directional characteristics in the entire operating band. Prototype of the proposed structure is fabricated and measurement results are verified with the simulation results. A good matching is also found between them.

Introductory Chapter: Novel Developments in UWB Technology

“…The Federal Communications Commission (FCC) has established that for medical applications, Ultra-Wide Band (UWB) is set in the range of 3.1-10.6 GHz [1][2][3][4][5][6][7][8]. UWB systems represent a technological alternative for the development of applications such as the Internet of Things (IoT), energy harvesting, biomedical, and wireless communication systems [5].…”

“…A flared quasi-Yagi offset-fed monopole UWB antenna operating in the 3.06-12.37 GHz range has been implemented using an FR-4 dielectric material with dimensions in centimeters [7]. In addition, the antenna has superior bandwidth, reliability, speed, and high resolution, advantages that are usable for UWB technology.…”

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Like any technology that evolves, UWB systems must reduce their complexity, power consumption, sustainability, and the possibility of reconfiguration, to achieve the highest performance compared to other competitors for implementations of high-accuracy localization systems [1][2][3][4][5][6][7][8]. Despite the advances achieved so far, UWB systems face challenges such as mitigating errors from non-line-of-sight paths and jamming signal interference in dense environments, especially in extreme conditions [1].

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A detailed performance analysis of a novel UWB flexible monopole antenna realized with airbrush technique for different technologies

“…An UWB antenna must cover the 7.5 GHz spectrum to be fully utilized [2]. Some antenna structures are recommended for UWB applications [4][5][6][7][8][9]. Monopole antenna is the most widely used due to its wideband impedance bandwidth and acceptable radiation performance.…”