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Compact Dual-Band HTS Bandpass Filter Using Coplanar Waveguide Short-Circuited Stub-Loaded Ring Resonator

Authors :
Chenfei Le
Chuanyun Wang
Ping Gui
Shuhai Xie
Chaochao Tao
Junhui Zhao
Baoping Ren
Xuehui Guan
Source :
IEEE Transactions on Applied Superconductivity. 29:1-4
Publication Year :
2019
Publisher :
Institute of Electrical and Electronics Engineers (IEEE), 2019.

Abstract

A compact coplanar waveguide (CPW) dual-band high-temperature superconducting (HTS) bandpass filter using a short-circuited stub-loaded ring resonator (SC-SLRR) is introduced in this paper. The equivalent circuit of the SC-SLRR is built and its resonant formulas are presented. The relationship between the parameters of electrical length and resonant performances are deduced. Resonant modes of the proposed resonators can be simultaneously excited and easily tuned for a dual-band application. To verify this methodology, a second-order CPW HTS dual-band bandpass filter operating at 2.36/4.93 GHz is designed. This filter is implemented on a 0.5-mm thick MgO wafer with a one-sided YBa 2 Cu 3 O 7 film, and it has the compact size of 0.146λg × 0.083λg. Measured results agree well with the simulated ones, which show that the minimum insertion losses of both bands are less than 0.15 dB.

Details

ISSN :
23787074 and 10518223
Volume :
29
Database :
OpenAIRE
Journal :
IEEE Transactions on Applied Superconductivity
Accession number :
edsair.doi...........74afebe082c8bff9a489bffac119a695
Full Text :
https://doi.org/10.1109/tasc.2019.2896234