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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >UHF second order bandpass filters based on miniature two-section SIR coaxial resonators
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UHF second order bandpass filters based on miniature two-section SIR coaxial resonators

机译：基于微型两节SIR同轴谐振器的UHF二阶带通滤波器

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摘要

This paper describes a concept of stepped impedance resonators (SIR) built from two coaxial structures fitted inside one another. The resonator is built out of a succession of two coaxial sections in cascade, where the ground conductor of the first one is the central core of the next, or vice-versa. An advantageous property of SIR is that they allow a substantial reduction in size, while keeping away the first harmonic and without strongly degrading the quality factor. After describing the theoretical behavior of the resonator, we will then present the specific properties of this approach in second order filter, conceived, and realized in the UHF band. With this example, we will also address flexibility and tunability aspects, which are the other potentially useful properties of the structure. Measurements and simulations are presented and discussed. The architecture resembles a set of two Russian dolls that fit inside one another.
机译：本文介绍了一种由相互配合的两个同轴结构构成的步进阻抗谐振器（SIR）的概念。谐振器由连续的两个同轴部分串联而成，其中第一个的接地导体是第二个的中心芯，反之亦然。 SIR的一个有利特性是，它们可以大幅减小尺寸，同时保持一次谐波，并且不会严重降低品质因数。在描述了谐振器的理论行为之后，我们将在UHF频带中构思和实现的二阶滤波器中介绍该方法的具体特性。在此示例中，我们还将讨论灵活性和可调性方面，这是结构的其他潜在有用属性。提出并讨论了测量和模拟。该建筑类似于一组两个彼此契合的俄罗斯玩偶。

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