Superconducting narrow band pass filters for advanced multiplexers
- 30 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 1277-1280 vol.3
- https://doi.org/10.1109/mwsym.1993.277107
Abstract
X-band microstrip filters with a 50-MHz-wide passband that provide 1.3-dB insertion loss at 77 K using copper ground planes have been built. Recent advances in double side coating of lanthanum aluminate substrates with YBa/sub 2/Cu/sub 3/O/sub 7- delta / will lower this figure to 0.6 dB. Circuit designs were evaluated for intermodulation distortion effects. An improvement over previous designs has increased the third-order output intercept point to +29 dBm. Methods of nondestructive dielectric and conductor loss testing were used to evaluate materials throughout the filter development.Keywords
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