Design of an electrically small printed square loop antenna for closely spaced Tx/Rx systems

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

Iet Microwaves Antennas & Propagation Pub Date : 2024-07-15 DOI:10.1049/mia2.12491

Nhat Truong, Sanghamitro Das, Satish K. Sharma

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Abstract

A highly miniaturised electrically small square loop antenna has been designed for operation at 2.5 GHz. The antenna is loaded using a simple series combination of two lumped inductors and two interdigitated capacitors in order to realise inherent impedance matching at a given miniaturisation level with respect to a specified source impedance, without using any external matching network. The designed antenna has an overall size of 0.061λ₀ × 0.061λ₀, which is approximately 75.6% miniaturised in terms of total loop length and 94% miniaturised in terms of overall footprint. The designed antenna is fabricated and the corresponding impedance matching and radiation patterns are measured, which are found to be in reasonable agreement with their simulated counterparts. Moreover, an investigation with two closely spaced electrically small SLAs, one for transmitting and the other for receiving, is carried out in this work in pursuit of maximising the isolation, which plays a crucial role in the Tx/Rx systems.

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为间距较近的 Tx/Rx 系统设计电气尺寸较小的印刷方形环形天线

我们设计了一种高度微型化的小型正方形环形天线，工作频率为 2.5 千兆赫。该天线使用两个叠加电感器和两个互斥电容器的简单串联组合进行加载，以便在给定的小型化水平上实现与指定源阻抗的固有阻抗匹配，而无需使用任何外部匹配网络。设计的天线总尺寸为 0.061λ0 × 0.061λ0，就环路总长度而言，微型化程度约为 75.6%，就总占地面积而言，微型化程度约为 94%。对所设计的天线进行了制造，并测量了相应的阻抗匹配和辐射模式，结果与模拟结果基本一致。此外，为了最大限度地提高在发送/接收系统中起关键作用的隔离度，本研究还使用了两个间距很近的小型 SLA，一个用于发送，另一个用于接收。

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

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