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首页> 外文会议>2012 IEEE First AESS European Conference on Satellite Telecommunications . >Synthesis and full-wave EM Simulation of Ku-band direct-coupled 10th order dual-band Zolotarev bandpass filter and performance comparison with Chebyshev bandpass filter
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Synthesis and full-wave EM Simulation of Ku-band direct-coupled 10th order dual-band Zolotarev bandpass filter and performance comparison with Chebyshev bandpass filter

机译：Ku波段直接耦合10阶双波段Zolotarev带通滤波器的合成和全波EM仿真以及与Chebyshev带通滤波器的性能比较

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In this paper; the authors performed synthesis and full-wave EM Simulation of 10th order Ku-band direct coupled dual-band Zolotarev and Chebyshev bandpass filters. Achieser-Zolotarev filtering functions have uneven in-band ripple distribution characteristics. The ripple characteristics can be exploited by increasing the ripple level very high in unwanted frequency band. This will result in higher out of band rejection compared to Chebyshev filters. It is suggested that for satellites having split Ku-band downlink frequency plan (lower band and upper band), Zolotarev dual-band bandpass filter can be a better receive filter than conventional Chebychev filter for ground terminals/VSATs. Both filters were synthesized with indigenously developed software tool and full-wave EM simulation was performed using coupling matrix model in 3D EM simulator. Key performance parameters (insertion loss, group delay and passband ripple) of both filters were compared at both synthesis and EM simulation levels. It was observed that Zolotarev bandpass receive filter has higher out-of-band rejection and added suppression between dual passbands as an extra benefit compared to conventional Chebyshev filter. This filter can significantly improve receiver selectivity and sensitivity.
机译：本文作者对10 阶Ku波段直接耦合双波段Zolotarev和Chebyshev带通滤波器进行了合成和全波EM仿真。 Achieser-Zolotarev滤波功能具有不均匀的带内波纹分布特性。可以通过在不想要的频带中将纹波级别提高到很高来利用纹波特性。与切比雪夫滤波器相比，这将导致更高的带外抑制。建议对于具有分开的Ku频段下行链路频率计划（较低频段和较高频段）的卫星，Zolotarev双频段带通滤波器可能比用于地面终端/ VSAT的常规Chebychev滤波器更好。两种滤波器均使用本地开发的软件工具进行合成，并使用3D EM仿真器中的耦合矩阵模型进行全波EM仿真。在综合和电磁仿真水平上都比较了两个滤波器的关键性能参数（插入损耗，群时延和通带纹波）。据观察，与传统的切比雪夫滤波器相比，佐洛塔列夫带通接收滤波器具有更高的带外抑制能力，并在双通带之间增加了抑制，这是一个额外的好处。该滤波器可以显着提高接收器的选择性和灵敏度。

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