Design of Tri-Band Bandpass Filter Using Modified X-Shaped Structure for IoT-Based Wireless Applications

IF 1.7 4区计算机科学 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

IEEE Embedded Systems Letters Pub Date : 2023-10-19 DOI:10.1109/LES.2023.3325898

Bilal Mushtaq;Muhammad Abdul Rehman;Sohail Khalid;Majed Alhaisoni

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引用次数: 0

Abstract

This letter introduces a straightforward method for designing a tri-band bandpass filter using a loaded symmetrical dual-step impedance resonator (D-SIR) structure, augmented by multiple open and short circuit stubs. The resulting filter operates at 2.2, 7.9, and 14.1 GHz, showcasing high-band selectivity. Experimental measurements confirm six transmission zeros and six transmission poles across the passbands, yielding fractional bandwidth (FBW) of 42.6%, 63.8%, and 27.9%. Particularly noteworthy is the broader upper stopband rejection, enhancing the filter’s overall performance. The design achieves impressive performance metrics, with minimal insertion loss (IL) of 0.71, 0.87, and 0.76 dB, accompanied by substantial return loss (RL) of 23, 18, and 13.8 dB across the three passbands. Furthermore, the fabricated design have a compact size of (

$0.20\times 0.15$

)

$\lambda _{g}$

on a Rogers Duroid RT/5880 substrate. Remarkable agreement between measured and simulated results underscores its viability for Internet of Things-based communication systems.

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为基于物联网的无线应用设计使用改进型 X 形结构的三频带通滤波器

这封信介绍了一种设计三频带带通滤波器的简单方法，该方法采用了加载对称双步阻抗谐振器（D-SIR）结构，并通过多个开路和短路存根进行增强。由此产生的滤波器工作频率分别为 2.2、7.9 和 14.1 GHz，展现了高带选择性。实验测量证实，通带上有六个传输零点和六个传输极点，分数带宽（FBW）分别为 42.6%、63.8% 和 27.9%。尤其值得一提的是，该滤波器具有更宽的上阻带抑制能力，从而提高了滤波器的整体性能。该设计实现了令人印象深刻的性能指标，插入损耗（IL）分别为 0.71、0.87 和 0.76 dB，三个通带的回波损耗（RL）分别为 23、18 和 13.8 dB。此外，在罗杰斯 Duroid RT/5880 衬底上制作的设计具有 ( 0.20 美元乘以 0.15 美元 ) $\lambda _{g}$的紧凑尺寸。测量结果与模拟结果之间的显著一致性强调了其在基于物联网的通信系统中的可行性。

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 Embedded Systems Letters Engineering-Control and Systems Engineering

CiteScore

3.30

自引率

0.00%

发文量

期刊介绍： The IEEE Embedded Systems Letters (ESL), provides a forum for rapid dissemination of latest technical advances in embedded systems and related areas in embedded software. The emphasis is on models, methods, and tools that ensure secure, correct, efficient and robust design of embedded systems and their applications.