This paper presents a notched band ultra-wideband bandpass filter using a single perturbed quint-mode half-mode substrate-integrated waveguide cavity. The cavity is perturbed by loading four stubs at two corners of the magnetic walls of the single cavity. The variable parameters of stubs are selected to move down the first five resonant modes to the predetermined passband during the design process. Meanwhile, microstrip lines with a transition structure located on two loaded stubs are employed to feed the resonator. Moreover, the filter also firstly designs a notched band by introducing a complementary split-ring resonator inside the cavity to mitigate potential interference signals at 8 GHz (satellite communication). Finally, a prototype filter was implemented and measured to verify.

中文翻译：

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紧凑型 UWB BPF，带有使用单个扰动 HMSIW 腔的陷波带

本文提出了一种陷波带超宽带带通滤波器，使用单个扰动五重模式半模基板集成波导腔。通过在单个腔的磁壁的两个角处加载四个短截线来扰动腔。在设计过程中，选择短截线的可变参数以将前五个谐振模式下移到预定的通带。同时，采用位于两个负载短截线上的具有过渡结构的微带线为谐振器供电。此外，该滤波器还首先通过在腔内引入互补开口环谐振器来设计陷波频带，以减轻 8 GHz 的潜在干扰信号（卫星通信）。最后，实现并测量了原型滤波器以进行验证。