Efficient transition from SMA to ESIW for planar slot array antennas in wireless systems

IF 1.4 4区工程技术 Q4 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Analog Integrated Circuits and Signal Processing Pub Date : 2025-09-11 DOI:10.1007/s10470-025-02498-7

Ahmad Parsa, Pejman Rezaei, Ali AmneElahi, Amin Khatami, Zahra Mousavirazi

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引用次数: 0

Abstract

In this manuscript, a planar slot array antenna is designed to operate at 10 GHz using empty substrate integrated waveguide (ESIW) technology. ESIW is an advanced form of substrate integrated waveguide (SIW) in which the dielectric material between the metal layers is removed and replaced with air to significantly reduce dielectric losses and improve radiation efficiency. The proposed structure is implemented on a standard PCB and consists of three main parts: (1) a coaxial (SMA) to SIW transition, (2) a tapered SIW-to-ESIW transition section, and (3) an eight-element ESIW-based slot array radiator. By eliminating most of the dielectric material, the ESIW-based design achieves enhanced radiation efficiency and lower insertion loss compared to conventional SIW slot arrays. The overall physical dimensions are 22 × 221 × 4.4 mm³, and the antenna achieves a fractional bandwidth of 3.85%, with a radiation efficiency of approximately 94% and a realized gain of 15.6 dB at the center frequency. The performance of the antenna was evaluated using full-wave simulations in CST, and the results show excellent agreement with experimental measurements.

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无线系统中平面槽阵天线从SMA到ESIW的有效过渡

在本文中，采用空基板集成波导（ESIW）技术设计了一个工作在10 GHz的平面缝隙阵列天线。ESIW是衬底集成波导（SIW）的一种高级形式，它将金属层之间的介电材料去除并用空气代替，从而显著降低介电损耗，提高辐射效率。所提出的结构在标准PCB上实现，由三个主要部分组成：(1)同轴（SMA）到SIW的过渡，(2)SIW到esiw的锥形过渡部分，以及(3)基于esiw的八元槽阵列散热器。通过消除大部分介电材料，与传统的SIW槽阵列相比，基于esiw的设计实现了更高的辐射效率和更低的插入损耗。该天线整体物理尺寸为22 × 221 × 4.4 mm³，分数带宽为3.85%，辐射效率约为94%，中心频率实现增益15.6 dB。利用CST全波仿真对天线的性能进行了评估，结果与实验测量结果吻合良好。

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

Analog Integrated Circuits and Signal Processing 工程技术-工程：电子与电气

CiteScore

0.30

自引率

7.10%

发文量

141

审稿时长

7.3 months

期刊介绍： Analog Integrated Circuits and Signal Processing is an archival peer reviewed journal dedicated to the design and application of analog, radio frequency (RF), and mixed signal integrated circuits (ICs) as well as signal processing circuits and systems. It features both new research results and tutorial views and reflects the large volume of cutting-edge research activity in the worldwide field today. A partial list of topics includes analog and mixed signal interface circuits and systems; analog and RFIC design; data converters; active-RC, switched-capacitor, and continuous-time integrated filters; mixed analog/digital VLSI systems; wireless radio transceivers; clock and data recovery circuits; and high speed optoelectronic circuits and systems.