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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >A self-packaged wideband filtering power divider based on substrate-integrated suspended line
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A self-packaged wideband filtering power divider based on substrate-integrated suspended line

机译：基于衬底集成悬挂线的自封装宽带滤波功率分配器

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摘要

In this study, a filtering power divider (FPD) is proposed by utilizing one Tshapedtri-mode stepped-impedance resonator with input/output couplingstructures based on substrate-integrated suspended line (SISL). The circuittopology and SISL technology are combined together to reach balance in performancessuch as compact size, wideband, high frequency selectivity, lowloss, good in-band isolation, wide stopband, and self-packaging so that thereare no obvious flaws. Wide bandwidth and two near-band transmission zerosare contributed by the proposed circuit topology. Good isolation can beobtained by comparing different coupling schemes with one resistor. An additionaltransmission zero for extending the upper stopband can be achieved bythe two closely placed stubs without increasing the size of the design. Low lossand self-packaging can be realized by SISL technology. For demonstration, aprototype is implemented with the size of 0.5λ_g × 0.28λ_g, which exhibits the1-dB fractional bandwidth of 26.3%, the frequency selectivity of 0.25/0.37 atthe lower/upper edges of the passband, and the insertion loss of 1.1 dB (includingtransition) at the center frequency (f_0) of 3.34 GHz, while the in-band isolationis higher than 20 dB and the 15-dB stopband is achieved up to 3.74 f_0.
机译：在这项研究中，提出了一种滤波功率分配器（FPD），它是利用一个具有基于衬底集成悬浮线（SISL）的输入/输出耦合结构的T型三模步进阻抗谐振器来实现的。电路拓扑和SISL技术结合在一起，可以在紧凑的尺寸，宽带，高频选择性，低损耗，良好的带内隔离，宽阻带和自封装等性能上达到平衡，因此没有明显的缺陷。所提出的电路拓扑有助于实现宽带宽和两个近频带传输零点。通过将不同的耦合方案与一个电阻进行比较，可以获得良好的隔离度。两个紧紧放置的短截线可以在不增加设计尺寸的情况下实现额外的零传输，以扩展上阻带。通过SISL技术可以实现低损耗和自包装。为了演示，原型的大小为0.5λ_g×0.28λ_g，其1-dB分数带宽为26.3％，通带上下边缘的频率选择性为0.25 / 0.37，插入损耗为1.1 dB （包括过渡）在3.34 GHz的中心频率（f_0）处，而带内隔离度高于20 dB，并且15 dB阻带达到了3.74 f_0。

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