A Modified Side Feeding Directional Antenna for Microwave Imaging Applications

2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI:10.1109/RFM.2018.8846505

M. T. Islam, S. Kibria, M. Samsuzzaman, K. Mat, Mohammad Tausiful Islam

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引用次数: 2

Abstract

A modified ultra-wideband(UWB) antenna with a side feeding asymmetric line and high directional radiation pattern is presented. The presented antenna is consist of a side feeding patch, rectangular modified ground with overall electrical dimension of 0.480λ × 0.560λ × 0.013λ at first resonance frequency. Numerous parameters are considered and optimized for using the proposed antenna in microwave imaging (MI) system over UWB frequency range of 3.1 to 10.6 GHz. The antenna offers an operating fractional bandwidth of about 121.31% (2.4 – 9.8 GHz) for reflection co-efficient −10dB, with good impedance matching, 8.9 dBi of the highest gain highly directional stable radiation pattern. The fidelity factor is 63% for face to face direction and 82% for side by side placement, that indicates the directional and lower alteration of the received signal. The antenna is designed and simulated using commercially available CST simulation software to verify the antenna behavior. The antenna can be a decent contender for using in MI application for its compact design, high gain, and directionality.

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一种用于微波成像的改进侧馈定向天线

提出了一种具有非对称馈线和高定向辐射方向图的改进超宽带(UWB)天线。该天线由侧馈电贴片、矩形修正地组成，在第一谐振频率下，总电尺寸为0.80 λ × 0.560λ × 0.013λ。在3.1 ~ 10.6 GHz的超宽带频率范围内，对该天线在微波成像(MI)系统中的应用进行了大量的参数考虑和优化。该天线的工作分数带宽约为121.31% (2.4 - 9.8 GHz)，反射系数为- 10dB，具有良好的阻抗匹配，最高增益8.9 dBi的高定向稳定辐射方向图。面对方向的保真度系数为63%，并排放置的保真度系数为82%，这表明接收信号的方向性和较低的变化。天线的设计和仿真使用市售的CST仿真软件来验证天线的行为。该天线具有紧凑的设计、高增益和方向性，是MI应用的有力竞争者。

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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2018 IEEE International RF and Microwave Conference (RFM)

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