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Design of 3D Printed Multi-Wavelength DRA
IETE Technical Review ( IF 2.4 ) Pub Date : 2020-09-22 , DOI: 10.1080/02564602.2020.1819890
Pramod Kumar 1 , Swati Vaid 1 , Shailendra Singh 2 , Jitendra Kumar 3 , Amitesh Kumar 4 , Santanu Dwari 5
Affiliation  

This paper presents the design and analysis of a portable multi-wavelength antenna for UWB, wireless data-link, electromagnetic sensor, and multi-beam applications. The antenna structure consists of an air suspended rectangular dielectric resonator antenna (DRA) loaded with a printed horn. The DRA is suspended in air using four supporting dielectric pillars. The overall antenna structure is fabricated using 3-D printing technology. Poly-Lactic Acid (PLA) (εr=3.45,tanδ=0.03) is used for the implementation of the antenna system (i.e. DRA, horn and supporting pillars integrated with the substrate). It is a biodegradable thermoplastic composite polymer. The antenna shows multibeam characteristics at different frequencies. The radiation patterns are explained using the concept of multi-wavelength long dipole or monopole. The computed efficiency of the projected DRA is more than 70% and maximum peak gain is 12.15 dBi. The measured impedance bandwidth of the antenna is 122.6% (7.5 GHz to 31.3 GHz). The measured group delay is less than 1.5 ns in the band of operation.



中文翻译:

3D打印多波长DRA的设计

本文介绍了用于 UWB、无线数据链路、电磁传感器和多波束应用的便携式多波长天线的设计和分析。天线结构由装有印刷喇叭的空气悬浮矩形介质谐振器天线 (DRA) 组成。DRA 使用四个支撑电介质柱悬浮在空气中。整个天线结构是使用 3D 打印技术制造的。聚乳酸 (PLA)(εr=3.45,棕褐色δ=0.03)用于实现天线系统(即与基板集成的DRA、喇叭和支柱)。它是一种可生物降解的热塑性复合聚合物。天线在不同频率下显示多波束特性。使用多波长长偶极子或单极子的概念来解释辐射图。预计 DRA 的计算效率超过 70%,最大峰值增益为 12.15 dBi。测得的天线阻抗带宽为 122.6%(7.5 GHz 至 31.3 GHz)。在工作频段内测得的群延迟小于 1.5 ns。

更新日期:2020-09-22
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