Design of UWB Microstrip Patch Antenna with Variable Band Notched Characteristic for Wi-MAX Application

2020 IEEE Student Conference on Research and Development (SCOReD) Pub Date : 2020-09-27 DOI:10.1109/SCOReD50371.2020.9250947

M. M. Hasan Mahfuz, Md Mohiuddin Soliman, M. R. Islam, M. H. Habaebi, N. Sakib, N. A. Malek

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引用次数: 2

Abstract

Microstrip patch antenna (MPA) having UltraWide Band characteristics is a worthy applicant in wireless communications. Mitigating EMI with the narrowband such as 5G lower band, Wi-MAX, WLAN, Satellite band lies in UWB region is a major research concern. This paper presents an UWB antenna containing variable band rejection for avoiding interference with Wi-MAX application. A simple rectangle patch antenna with defective ground structure is used to design UWB characteristics operating from 2.7 GHz – 13 GHz. Band rejections from 3.25 GHz to 3.8 GHz are obtained by utilizing semi-circular slot on radiating patch. Variable band rejection characteristic can be achieved in between 2.75 GHz – 4.4 GHz through altering the value of width of patch. The return loss and VSWR values over the band rejection frequency are close to 0 dB and greater than 2 respectively. In addition, the proposed UWB antenna obtained 85% radiation efficiency over the operating frequency, on the other hand, less than 53% radiation efficiency achieved over band rejection frequency. The proposed antenna is simple in design, compact in size, and efficient in radiation. Hence it is a good candidate on UWB antenna with band notch characteristic for Wi-MAX application.

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Wi-MAX应用中可变带陷波特性的超宽带微带贴片天线设计

微带贴片天线具有超宽带的特性，是无线通信中一个有价值的应用。利用5G低频段、Wi-MAX、WLAN、卫星频段等窄带在超宽带区域内减轻EMI是一个重要的研究课题。本文提出了一种可变带抑制的超宽带天线，以避免对Wi-MAX应用的干扰。采用具有缺陷接地结构的简单矩形贴片天线来设计2.7 GHz - 13 GHz的超宽带特性。利用辐射贴片上的半圆形缝隙获得3.25 GHz ~ 3.8 GHz的频带抑制。通过改变贴片宽度的值，可以在2.75 GHz ~ 4.4 GHz范围内实现可变带抑制特性。回波损耗和驻波比在带阻频率上分别接近于0 dB和大于2。此外，所提出的UWB天线在工作频率上的辐射效率为85%，而在带阻频率上的辐射效率低于53%。该天线设计简单，体积小，辐射效率高。因此，它是Wi-MAX应用中具有带陷波特性的超宽带天线的理想选择。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 IEEE Student Conference on Research and Development (SCOReD)

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