Wideband 0.5–50 GHz double-ridged guide horn antenna using coaxial-to-ridge waveguide launcher

IF 1.1 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Iet Microwaves Antennas & Propagation Pub Date : 2023-12-15 DOI:10.1049/mia2.12441

Bennie Jacobs, Johann W. Odendaal, Johan Joubert

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Abstract

Ever-increasing bandwidth requirements from various industries drive the need for the ever-increasing bandwidth of antennas used for testing. Broadband Double-Ridged Guide Horn (DRGH) antennas are used extensively in antenna measurement and ElectroMagnetic Compatibility/Interference (EMC/I) testing. The current state-of-the-art broadband DRGH antennas reported in the literature for use in measurement applications cover bandwidth ratios as large as 36:1 (0.5–18 GHz). This paper presents the design and realisation of a DRGH antenna with a 100:1 bandwidth ratio (0.5–50 GHz). To achieve such a wide bandwidth, the ridge gap, width and feed were optimised, and a novel coaxial-to-ridge waveguide launcher section based on a typical Vivaldi antenna was developed. Backward radiation was reduced using an absorber-filled cavity. A prototype DRGH antenna was manufactured using additive manufacturing, also referred to as 3D printing. Simulated and measured results obtained in an anechoic chamber are presented.

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使用同轴对脊波导发射器的宽带 0.5-50 GHz 双脊导波喇叭天线

各行各业对带宽的要求不断提高，促使测试所用天线的带宽不断增加。宽带双脊导角（DRGH）天线被广泛用于天线测量和电磁兼容/干扰（EMC/I）测试。文献中报道的当前用于测量应用的最先进宽带 DRGH 天线的带宽比高达 36:1（0.5-18 千兆赫）。本文介绍了带宽比为 100:1（0.5-50 GHz）的 DRGH 天线的设计和实现。为实现如此宽的带宽，对脊间隙、宽度和馈电进行了优化，并在典型的 Vivaldi 天线基础上开发了一种新型同轴到脊波导发射器部分。使用吸收器填充空腔减少了后向辐射。利用增材制造（也称为 3D 打印）制造了 DRGH 天线原型。介绍了在消声室中获得的模拟和测量结果。

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来源期刊

Iet Microwaves Antennas & Propagation 工程技术-电信学

CiteScore

4.30

自引率

5.90%

发文量

109

审稿时长

7 months

期刊介绍： Topics include, but are not limited to: Microwave circuits including RF, microwave and millimetre-wave amplifiers, oscillators, switches, mixers and other components implemented in monolithic, hybrid, multi-chip module and other technologies. Papers on passive components may describe transmission-line and waveguide components, including filters, multiplexers, resonators, ferrite and garnet devices. For applications, papers can describe microwave sub-systems for use in communications, radar, aerospace, instrumentation, industrial and medical applications. Microwave linear and non-linear measurement techniques. Antenna topics including designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal and integrated antennas. Computational electromagnetics and synthesis of antenna structures including phased arrays and antenna design algorithms. Radiowave propagation at all frequencies and environments. Current Special Issue. Call for papers: Metrology for 5G Technologies - https://digital-library.theiet.org/files/IET_MAP_CFP_M5GT_SI2.pdf