Abstract

In this paper, we have designed and fabricated a novel microstrip diplexer. It has two quite close channels at 1.67 GHz and 1.88 GHz make it suitable for FDD schemes and GSM applications. The proposed structure includes two coupled meandrous open loop resonators which are coupled to spiral cells. An approximated LC model of the presented resonator is proposed and analyzed to give some information about the resonator behavior. Based on the obtained information, the proposed diplexer is optimized and miniaturized. It occupies a small size of 0.036 λ_g². Despite of having close channels, the low insertion losses of 0.43 dB and 0.35 dB are obtained for the first and second bands, respectively. For verifying the simulation results and designing method, the diplexer is fabricated and measured, where the measurement and simulation results show a good agreement.

中文翻译：

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基于耦合均值开环谐振器的紧凑型低损耗微带双工器设计

摘要

在本文中，我们设计并制造了一种新型的微带双工器。它在1.67 GHz和1.88 GHz上有两个非常接近的信道，非常适合FDD方案和GSM应用。所提出的结构包括两个耦合到螺线管单元的耦合的平均开环谐振器。提出并分析了提出的谐振器的近似LC模型，以给出有关谐振器性能的一些信息。基于获得的信息，对提出的双工器进行了优化和小型化。它占据0.036的小尺寸λ_克²。尽管通道很近，但对于第一和第二个频段却分别获得了0.43 dB和0.35 dB的低插入损耗。为了验证仿真结果和设计方法，制造并测量了双工器，其测量结果与仿真结果吻合良好。