High temperature superconducting quasi-elliptic function filter without cross-coupled line

被引：0

作者：

Zhang T.-L. ^{[1
]}

Zhou L.-G. ^{[1
]}

Yang K. ^{[1
]}

Chen P. ^{[1
]}

Ren X.-Y. ^{[1
]}

Hou F.-Y. ^{[1
]}

Yang C.-L. ^{[1
]}

机构：

[1] School of Astronautics and Aeronautics, University of Electronic Science and Technology of China, Chengdu

来源：

Dianzi Keji Daxue Xuebao/Journal of the University of Electronic Science and Technology of China | 2016年 / 45卷 / 01期

关键词：

Filter; High temperature superconducting; Miniaturization; Multi-zigzag resonator; Transmission zero;

D O I：

10.3969/j.issn.1001-0548.2016.01.003

中图分类号：

学科分类号：

摘要：

This paper presents a group of improved multi-zigzag resonators to design high temperature superconducting (HTS) miniaturization quasi-elliptic filter. With a little change of the filter's layout, cross-couplings between non-adjacent resonators in topology logic are directly achieved without any cross-coupling line by optimizing the resonator's structure, and multi-pairs of transmission zeros are introduced to improve out-of-band rejection of filter, which are not only beneficial for filter's miniaturization, but also avoids the high processing-technical requirement caused by cross-line coupling. By using a self-synthesized coupling matrix, a 12th-order HTS filter is designed with 3 pairs of transmission zeros on a double-sided YBCO/LaAlO3/YBCO high temperature superconducting thin film whose size is 31.5 mm×15.6 mm, thickness is 0.5 mm, and dielectric constant is 24. At 77 K, the filter's tested center frequency is 830 MHz with a bandwidth of 10 MHz, a band edge roll-off more than 45 dB/MHz, a insert losing less than 0.4 dB and a return losing better than -11.3 dB. © 2016, Editorial Board of Journal of Electronic Science and Technology of China. All right reserved.

引用

页码：26 / 29and76

页数：2950

共 13 条

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