A wideband dual-band bandstop filter with flexible control of stopband rejection, bandwidth and centre frequency ratio

IF 1.1 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Iet Microwaves Antennas & Propagation Pub Date : 2023-12-29 DOI:10.1049/mia2.12451

Chang Xu, Xiaolong Wang, Lei Zhu, Wenzhong Sun, Kun Li, Gennadi Milinevsky, Geyu Lu

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引用次数: 0

Abstract

A novel wideband dual-band bandstop filter with multi-transmission zeros and multi-reflection zeros is presented. It consists of two pairs of symmetric open-ended coupled lines at two sides and (2N − 1) pairs of coupled-line sections with an open-circuited stub in the middle. Through even- and odd-mode analyses, general simultaneous equations for characteristic impedances are derived with the proposed algorithm. By suitably selecting all the design parameters, the proposed topology could not only provide a controllable equal-ripple response in the passband but also control the stopband rejection, bandwidth (BW), and centre frequency ratio in the stopband flexibly. For verification, one prototype circuit is finally fabricated and measured in the experiment. Good agreement between the measured and simulated results is attained so as to successfully validate the correctness of the proposed design method.

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可灵活控制阻带抑制、带宽和中心频率比的宽带双频带阻带滤波器

本文介绍了一种具有多传输零点和多反射零点的新型宽带双频带阻带滤波器。它由两边对称的两对开口耦合线和 (2N - 1) 对耦合线部分组成，中间有一个开口短路。通过偶模和奇模分析，利用所提出的算法得出了特性阻抗的一般同步方程。通过适当选择所有设计参数，所提出的拓扑结构不仅能在通带提供可控的等纹波响应，还能灵活控制止带抑制、带宽（BW）和止带中心频率比。为了进行验证，最终制作了一个原型电路，并在实验中进行了测量。测量结果与模拟结果非常吻合，从而成功验证了所提出设计方法的正确性。

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来源期刊

Iet Microwaves Antennas & Propagation 工程技术-电信学

CiteScore

4.30

自引率

5.90%

发文量

109

审稿时长

7 months

期刊介绍： Topics include, but are not limited to: Microwave circuits including RF, microwave and millimetre-wave amplifiers, oscillators, switches, mixers and other components implemented in monolithic, hybrid, multi-chip module and other technologies. Papers on passive components may describe transmission-line and waveguide components, including filters, multiplexers, resonators, ferrite and garnet devices. For applications, papers can describe microwave sub-systems for use in communications, radar, aerospace, instrumentation, industrial and medical applications. Microwave linear and non-linear measurement techniques. Antenna topics including designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal and integrated antennas. Computational electromagnetics and synthesis of antenna structures including phased arrays and antenna design algorithms. Radiowave propagation at all frequencies and environments. Current Special Issue. Call for papers: Metrology for 5G Technologies - https://digital-library.theiet.org/files/IET_MAP_CFP_M5GT_SI2.pdf