Study of a water-immersed ultra-wide band microstrip patch antenna

Q2 Social Sciences

Advances in Engineering Education Pub Date : 2017-11-01 DOI:10.1109/PIERS-FALL.2017.8293196

Yang Yang, Jin Xu, H. Yin, Wenfei Bo, Jingchao Tang, Jialu Ma, Jie Xie, Zhanliang Wang, Y. Gong

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引用次数: 1

Abstract

In order to significantly improve the resolution of biological imaging, a water-immersed (the antenna is placed in the pure water) ultra-wide band (UWB) microstrip antenna is proposed in this paper. The aim of this paper is to determine the suitable wavelength of the interrogating radiation in the medium and to reduce the big reflection of the incident energy at the interface between the target and the medium surrounding the target. In this way, the frequency of 2.45 GHz is selected due to the compromise between spatial resolution and loss of signal, and the medium is chosen as water because of its relative permittivity close to the biological tissues. The design of the linear gradient impedance-matched patch antenna is proposed to match the antenna and the coaxial transmission line of 50 ohms. The simulation results are presented that the fixed percentage bandwidth of this antenna is about 0.923 (1.75 ∼ 4.8 GHz) and the 3 dB gain degree range is from −30° to 30° except the null at the center from −6° to 6°, which are both good enough to satisfy the requirements for biological imaging system.

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水浸式超宽带微带贴片天线的研究

为了显著提高生物成像的分辨率，本文提出了一种水浸式(天线置于纯水中)超宽带(UWB)微带天线。本文的目的是确定介质中询问辐射的合适波长，以减少入射能量在目标与周围介质界面处的大反射。这样，由于空间分辨率和信号损耗之间的折衷，选择了2.45 GHz的频率，介质选择了水，因为水的相对介电常数接近生物组织。为了使天线与50欧姆同轴传输线相匹配，提出了线性梯度阻抗匹配贴片天线的设计。仿真结果表明，该天线的固定百分比带宽约为0.923 (1.75 ~ 4.8 GHz)， 3db增益度范围为- 30°~ 30°(中心零为- 6°~ 6°)，足以满足生物成像系统的要求。

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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来源期刊

Advances in Engineering Education Social Sciences-Education

CiteScore

2.90

自引率

0.00%

发文量

期刊介绍： The journal publishes articles on a wide variety of topics related to documented advances in engineering education practice. Topics may include but are not limited to innovations in course and curriculum design, teaching, and assessment both within and outside of the classroom that have led to improved student learning.