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Effects of package width on K‐band high‐temperature superconducting filters
Author(s) -
Carlsson E.,
Gevorgian S.,
Linnér P.
Publication year - 1995
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650100603
Subject(s) - insertion loss , materials science , ripple , microstrip , bandwidth (computing) , band pass filter , superconductivity , optoelectronics , high temperature superconductivity , filter (signal processing) , copper , substrate (aquarium) , electrical engineering , condensed matter physics , physics , telecommunications , engineering , voltage , metallurgy , oceanography , geology
The effect of substrate/package width on filter performance is demonstrated and discussed for 18‐GHz packaged filters using high‐temperature superconducting (HTS), coupled microstrip lines. The filters are made of 0.3‐μm YBa 2 Cu 3 O 7 – ∂8 (YBCO) on MgO substrates with copper ground planes. The HTS filter shows a minimum insertion loss (IL) of 0.9 dB, steep skirts, and very good out‐of‐band rejection (> 45 dB up to 21 GHz) at 77 K with a bandwidth of 2.8% and a 0.3‐dB ripple. © 1995 John Wiley & Sons, Inc.