一种无需接地结构的巴伦设计
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Design of a Via-less Balun
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    摘要:

    研究了一种新型的耦合线巴伦结构的设计。该巴伦结构简单,仅包含一对耦合线和一根独立传输线,可在单层PCB板上实现,无需任何接地结构。文中给出了该巴伦的设计公式,并分析了在不同端口阻抗比情况下理想电路的阻抗取值范围。该结构中设计参数灵活,还可以通过改变传输线的阻抗值来调整工作带宽。此外,从设计公式中可看到这种结构也很适合设计具有较大的端口阻抗比的巴伦。文中对设计进行了实物样品加工,其工作频率为1.5 GHz。其测试结果与理想电路、三维仿真曲线都很吻合。

    Abstract:

    A novel coupledline balun structure is proposed and investigated in this paper. The balun has a simple structure which only consists of a pair of coupled line and a single transmission line. In addition, it can be realized on a single layer PCB without any via. The analytic design formulas of the proposed balun are given and the impedance range of the ideal circuit under different port impedance ratios is analyzed. The design parameters are very flexible, and the operating bandwidth of the balun can be adjusted by changing the impedance value of the transmission line. Moreover, the design equations indicate that the proposed balun structure is very suitable for designing the balun with large port impedance ratio. A prototype balun that operates at 1.5 GHz is simulated, fabricated and measured. The test results are in good agreement with the ideal circuit and the threedimensional simulation curve.

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王玺,蒋创新.一种无需接地结构的巴伦设计[J].压电与声光,2018,40(2):174-177. WANG Xi, JIANG Chuangxin. Design of a Via-less Balun[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

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  • 在线发布日期: 2018-04-16
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