A Narrow-Band Superconducting Filter Using Spirals with a Reversal in Winding Direction

Research output: Contribution to journalArticlepeer-review

Authors

Colleges, School and Institutes

Abstract

A resonator consisting of a microstrip spiral, with a reversal in winding direction, is used for a narrowband superconducting filter. The fields are tightly confined, leading to the required small coupling coefficients, without a large separation between resonators. Nevertheless, tunability and power-handling capacity are better than some other resonators with localized fields. A quality factor exceeding a million was achieved. A 148 MHz, 0.1% bandwidth sixth-order quasi-elliptic filter is demonstrated.

Details

Original languageEnglish
Pages (from-to)3954-3959
Number of pages6
JournalIEEE Transactions on Microwave Theory and Techniques
Volume54
Issue number11
Publication statusPublished - 1 Nov 2006

Keywords

  • narrowhand, spiral, superconducting, filters