用于带宽增强、阻抗匹配和谐波抑制的集块元件定向耦合器

IF 0.9 4区工程技术 Q4 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-02-22 DOI:10.1155/2024/6662753

Murong Zhuo

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引用次数: 0

摘要

本文介绍了一种可实现任意阻抗匹配和 2f0 以上谐波抑制的块状元件宽带定向耦合器。该耦合器由四个滤波网络（FN）和一个作为匹配网络的非对称支线混合网络组成。采用块状元件拓扑结构有助于减小电路尺寸，提高谐波抑制能力。每个 FN 由两个叠加元件谐振器组成，可提供两个额外的传输极点，从而实现带宽扩展、带宽增强和谐波抑制。为了证明拟议设计的有效性，我们设计、模拟并制造了一个工作频率为 0.5 GHz、具有各种终端阻抗的宽带耦合器。测量尺寸为 0.039×0.039 λg2，-14.3 dB 回损的分数带宽为 46%，从 0.69 到 4.5 GHz 的谐波抑制超过 -30 dB。

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A Lumped-Element Directional Coupler for Bandwidth Enhancement, Impedance Matching, and Harmonic Suppressions

This paper presents a lumped-element wideband directional coupler that enables arbitrary impedance matching and harmonic suppressions from 2f₀. The coupler consists of four filtering networks (FNs) and an asymmetric branch-line hybrid serving as the matching network. The use of lumped-element topology helps reduce circuit size and improve harmonic suppressions. Each FN, composed of two lumped-element resonators, contributes two additional transmission poles, enabling bandwidth scaling, bandwidth enhancement, and harmonic suppressions. To demonstrate the effectiveness of the proposed design, a wideband coupler with various terminal impedances operating at 0.5 GHz is designed, simulated, and fabricated. The measured size is , the fractional bandwidth for –14.3 dB return loss is 46%, and the harmonic suppression is more than –30 dB from 0.69 to 4.5 GHz.

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来源期刊

International Journal of RF and Microwave Computer-Aided Engineering 工程技术-工程：电子与电气

CiteScore

4.00

自引率

23.50%

发文量

489

审稿时长

3 months

期刊介绍： International Journal of RF and Microwave Computer-Aided Engineering provides a common forum for the dissemination of research and development results in the areas of computer-aided design and engineering of RF, microwave, and millimeter-wave components, circuits, subsystems, and antennas. The journal is intended to be a single source of valuable information for all engineers and technicians, RF/microwave/mm-wave CAD tool vendors, researchers in industry, government and academia, professors and students, and systems engineers involved in RF/microwave/mm-wave technology. Multidisciplinary in scope, the journal publishes peer-reviewed articles and short papers on topics that include, but are not limited to. . . -Computer-Aided Modeling -Computer-Aided Analysis -Computer-Aided Optimization -Software and Manufacturing Techniques -Computer-Aided Measurements -Measurements Interfaced with CAD Systems In addition, the scope of the journal includes features such as software reviews, RF/microwave/mm-wave CAD related news, including brief reviews of CAD papers published elsewhere and a "Letters to the Editor" section.