Investigation of a Superstrate Loaded Ultrawideband Dual-Ridged Terahertz Pyramidal Horn Antenna

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-09-04 DOI:10.1109/LAWP.2024.3454524

Amit Sharma;Dinesh Kumar V.

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Abstract

This work presents the design and investigation of a terahertz pyramidal ultrawideband (UWB) horn antenna featuring a metallic dual-ridged structure with dielectric superstrate (DS) loading. Initially, a pyramidal horn antenna is designed at a 1.5 THz center frequency, and its performance is analyzed numerically. Further, to improve its S ₁₁ bandwidth (BW) at lower terahertz frequencies the technique of dual-ridge loading has been employed. Next, to enhance the gain and directivity of the dual-ridged antenna, DS loading has been introduced. To achieve an optimal response, a low permittivity porous silica dielectric superstrate with a dielectric constant ϵ _r = 2, and loss tangent tanδ = 0.011 is employed, and its geometrical shape is suitably chosen. The proposed terahertz horn antenna exhibits UWB response (143%) with substantial gain (>19 dBi), aperture efficiency of 62.8% and radiation as well as total efficiency (>88%). To the best of our knowledge such design and analysis of a THz horn antenna is reported for the first time. To ascertain the practicality of the antenna, a photoconductive dipole is used as a feed for its excitation and found its performance promising. Thus, the proposed antenna could be a suitable candidate for 6G and other ultra-fast terahertz communication systems.

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超宽带双脊状太赫兹金字塔喇叭天线的研究

本文设计和研究了一种金属双脊结构的超宽带（UWB）喇叭天线。首先设计了一种中心频率为1.5太赫兹的锥体喇叭天线，并对其性能进行了数值分析。此外，为了提高其在较低太赫兹频率下的S11带宽（BW），采用了双脊加载技术。其次，为了提高双脊天线的增益和指向性，引入了DS加载。为了获得最佳响应，采用介电常数ϵr = 2、损耗正切tanδ = 0.011的低介电常数多孔二氧化硅介质衬底，并选择合适的几何形状。所提出的太赫兹喇叭天线具有超宽带响应（143%），具有可观的增益（>19 dBi），孔径效率为62.8%，辐射和总效率（>88%）。据我们所知，这种太赫兹喇叭天线的设计和分析是首次报道。为了确定该天线的实用性，采用光导偶极子作为激励源，发现其性能良好。因此，所提出的天线可能是6G和其他超高速太赫兹通信系统的合适候选者。

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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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.