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首页> 外文会议>IEEE Latin American Symposium on Circuits and Systems >Design and construction of dual-mode micro-strip resonator filters for the 950–1,450 MHz band: Application as IF filters in microwave transceivers
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Design and construction of dual-mode micro-strip resonator filters for the 950–1,450 MHz band: Application as IF filters in microwave transceivers

机译：950-1,450 MHz频段双模微带谐振器滤波器的设计和构造：在微波收发器中用作中频滤波器

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In this paper, the design, construction and characterization of closed-loop, dual-mode resonator band-pass filters operating at a center frequency of 1.1 GHz, using a low-cost FR4 substrate, is described. Dual-mode resonator microwave filters are being studied as they are more compact when compared to other microstrip classical structures (parallel coupled microstrip lines, tapped input digital filters, hairpin filters, etc.), mostly when operating in low-frequencies such as the L and S microwave bands. An important contribution of this paper is showing that dual-mode resonator filters can be built on low-cost FR4 substrates. This is an original feature and becomes an attractive alternative for this kind of filters, which are mainly built on more specialized substrates such as Duroid or alumina. In this paper we present the design, simulation and fabrication of a 1.1 GHz IF filter, which is part of a heterodyne K-band receiver designed to measure atmospheric attenuation in the 22-23 GHz band. The proposed filter, centered at 1.1 GHz and with a 250 MHz bandwidth, is based on square loop dual-mode resonators. Filters in two architectures are proposed: single and compound resonators (two cascaded resonators). The simulated electrical responses are compared and reported. At this time, only single structures have been fabricated and measured, showing an excellent agreement between simulation and experimental results.
机译：在本文中，描述了使用低成本FR4基板以1.1 GHz中心频率工作的闭环双模谐振器带通滤波器的设计，构造和特性。正在研究双模谐振器微波滤波器，因为与其他微带经典结构（并联微带线，抽头输入数字滤波器，发夹式滤波器等）相比，它们更紧凑，主要是在低频率（例如L）下运行时和S微波波段。本文的重要贡献表明，可以在低成本FR4基板上构建双模谐振器滤波器。这是原始功能，并成为此类过滤器的有吸引力的替代方法，这些过滤器主要构建在更特殊的基材上，例如Duroid或氧化铝。在本文中，我们介绍了1.1 GHz IF滤波器的设计，仿真和制造，该滤波器是用于测量22-23 GHz频带中大气衰减的外差K频带接收机的一部分。所提出的滤波器的中心频率为1.1 GHz，带宽为250 MHz，它基于方形环路双模谐振器。提出了两种架构的滤波器：单谐振器和复合谐振器（两个级联谐振器）。比较并报告了模拟的电响应。此时，仅单个结构已被制造和测量，显示出仿真和实验结果之间的极好的一致性。

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