知识与财富的链接
对薄膜支撑空腔型微屏蔽传输线进行分析,提出微屏蔽传输线的物理结构。为了验证微屏蔽传输线在毫米波应用的优势,利用类比平行耦合微带线滤波器的方法设计了一种4阶切比雪夫三线对称结构微屏蔽线滤波器。通过对该微屏蔽腔体结构进行HFSS仿真,得到中心频率35 GHz的宽带滤波器,带宽15 GHz,带内插损小于0.5 dB,带外抑制>40 dB@53 GHz,器件尺寸8.24 mm×1.5 mm×0.65 mm。该设计为基于平面传输线的滤波器在毫米波频段的实现提供了一种可行的方法。
The film supported cavity microshield transmission line is analyzed and its physical structure is given out. In order to verify the superiority of microshield transmission line in millimeter wave application, parallel-coupled microstrip line method is adopted to design a 4th order Chebyshev filter with the three-symmetrical-line structure. The proposed microshield cavity structure is simulated with HFSS, achieving a broadband filter with center frequency of 35 GHz, bandwidth 15 GHz, band insertion loss below 0.5 dB and band rejection>40 dB@53 GHz. The device has a size of 8.24 mm×1.5 mm×0.65 mm. This design provides a possible method for implementing filters based on plain transmission line in millimeter band.