Purpose

The purpose of the study is – in Microwave filter design, the performances of passive components are deteriorated by parasitics at gigahertz (GHz) frequency range. A compact and multi-stack electromagnetic band gap (EBG) structure is proposed with improved stop band characteristics at GHz frequency range in this work. This paper proposes a new design for ultra wide band pass filter (resonator BPF) with periodically loaded one-dimensional EBG to achieve the harmonic suppression. This basic EBG structure is developed with combination of a signal strip and ground plane in the slotted section. The resonator BPF is loaded with one EBG, two EBG and three EBGs to improve the stop-band rejection.

Design/methodology/approach

The proposed filter is with multi-stack EBG cell for achieving good pass band and stop bands performance. Circuit model is analyzed in Section 2. Section 3 discuses band pass filter loaded with one EBG. In Sections 4 and 5, filter with two and three EBG loaded resonators are discussed, respectively. Section 6 is concluded with comparison of simulation and measured results.

Findings

The stop-band rejection is 20 dB, 40 dB and 50 dB, respectively, in the frequency range of 6 GHz to 20 GHz. The simulation analysis is carried out with advanced system design software. To validate the simulation results, proposed structure is fabricated, and results are found to be in good agreement.

Originality/value

This paper accounts for designing resonator BPF, which has slow wave pass band and stop band characteristics. Second and third harmonics are suppressed using multi-stack EBG. Various stacks with basic designs are proposed and improved results have been demonstrated which is open for future research.

中文翻译：

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基于紧凑型多电磁带隙 (EBG) 单元的超宽带 (UWB) 滤波器，具有改进的阻带特性

目的

该研究的目的是 - 在微波滤波器设计中，无源元件的性能会因千兆赫 (GHz) 频率范围内的寄生效应而恶化。在这项工作中，提出了一种紧凑的多堆栈电磁带隙 (EBG) 结构，其在 GHz 频率范围内具有改进的阻带特性。本文提出了一种具有周期性加载的一维 EBG 的超宽带通滤波器（谐振器 BPF）的新设计，以实现谐波抑制。这种基本的 EBG 结构是在开槽部分结合信号带和接地平面开发的。谐振器 BPF 加载了一个 EBG、两个 EBG 和三个 EBG，以提高阻带抑制。

设计/方法/方法

建议的滤波器采用多堆叠 EBG 单元，以实现良好的通带和阻带性能。第 2 节分析了电路模型。第 3 节讨论加载了一个 EBG 的带通滤波器。在第 4 节和第 5 节中，分别讨论了带有两个和三个 EBG 负载谐振器的滤波器。第 6 节以模拟和测量结果的比较结束。

发现

在 6 GHz 至 20 GHz 的频率范围内，阻带抑制分别为 20 dB、40 dB 和 50 dB。仿真分析采用先进的系统设计软件进行。为了验证模拟结果，制造了所提出的结构，并且发现结果非常一致。

原创性/价值

本文介绍了谐振器 BPF 的设计，它具有慢波通带和阻带特性。使用多堆栈 EBG 抑制二次和三次谐波。提出了具有基本设计的各种堆栈，并且已经证明了改进的结果，这对未来的研究是开放的。