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首页> 外文会议>2013 International Workshop on Microwave and Millimeter Wave Circuits and System Technology >Compact box-section bandpass filter with enhanced stopband characteristics
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Compact box-section bandpass filter with enhanced stopband characteristics

机译：紧凑的箱型截面带通滤波器，具有增强的阻带特性

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摘要

A compact bandpass filter (BPF) with enhanced stopband characteristics is presented in this paper. The proposed BPF consists of four improved stepped impedance resonators (SIRs),which implements into a box-section strcture. To improve the frequency selectivity and the stopband characteristics, additional transmission zero (TZ) was introduced by mixed electric and magnetic (EM) coupling. A new filter with 31.2% fractional bandwidth (FBW) has been designed and fabricated to verify the validity of the proposed method. The filter has two transmission zeros, where TZ1 is located in 0.4GHz with 78.7dB rejection and TZ2 is located in 2.7GHz with 50.2 dB rejection. Measured results are in good agreement with the electromagnetic simulation.
机译：本文提出了一种具有增强阻带特性的紧凑型带通滤波器（BPF）。提出的BPF由四个改进的步进阻抗谐振器（SIR）组成，它们实现为箱形截面结构。为了提高频率选择性和阻带特性，通过电和磁混合（EM）耦合引入了附加的零传输（TZ）。设计并制造了一种具有31.2％分数带宽（FBW）的新型滤波器，以验证所提出方法的有效性。该滤波器具有两个传输零点，其中TZ1位于0.4GHz，抑制率为78.7dB，TZ2位于2.7GHz，抑制率为50.2 dB。测量结果与电磁仿真结果吻合良好。

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