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针对超宽带(UWB)系统易受窄带信号干扰问题,本文提出了一种小型化陷波超宽带功分器,在Wilkinson功分器的基础上,采用扇形结构的阶跃阻抗开路枝节,并通过平行三线耦合到输出端口展宽带宽,同时在接地面蚀刻二阶开环谐振器(CSR2),生成缺陷地结构(DGS),实现陷波特性。通过分析仿真,所设计的该超宽带功分器具有较宽的工作频带,且在5.8GHz处形成陷波,与预期结果吻合。
Aiming at the problem of UWB system being susceptible to narrowband signal interference, this paper presents a miniaturized notch ultra-wideband power splitter. On the basis of Wilkinson power splitter, A parallel three-wire couple to the output port broadens the bandwidth while etching the second-order open-loop resonator (CSR2) at the ground plane to generate a defect structure (DGS) for notch characteristics. By analyzing the simulation, the designed UWB power divider has a wide operating frequency band and a notch is formed at 5.8GHz, which is consistent with the expected result.