Design of a dual-wideband high temperature superconducting filter

被引：2

作者：

Yu, Xiao ^{[1
,2
]}

Xi, Wei-Bin ^{[3
]}

Wu, Song-Tao ^{[3
]}

Yan, Pei-Guang ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China

[2] Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China

[3] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2021年 / 589卷

关键词：

HTS filter; Wideband; Dual-band; Quarter-wavelength; Stub-loaded; STEPPED-IMPEDANCE RESONATORS; COMPACT;

D O I：

10.1016/j.physc.2021.1353937

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A 7-pole dual-wideband high temperature superconducting (HTS) filter based on a quarter-wavelength stubloaded dual-mode resonator is introduced. The resonance characteristics, coupling patterns, external factor and cross coupling structure are discussed in turn. The filter is fabricated on a double side DyBa2Cu3O7 HTS thin film with a 2 inch-diameter and 0.5-mm-thick MgO substrate. The fabricated filter is measured at 77 K. The measured results show that the filter has an excellent in-band performance with center frequencies of 240 MHz, 541 MHz and passbands of 40 MHz, 140 MHz, respectively. Due to the introduction of transmission zeros, the selectivity of filter is further improved. The measured results agree with the simulated ones substantially.

引用

页数：6

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