Article comprising a superconducting RF filter
First Claim
1. An article comprising a RF filter comprising a multiplicity of coupled circular disk resonators selected for operation in a resonator mode that has substantially no azimuthal current flow, and further comprising an input contact for providing a RF input current to the filter and an output contact for receiving a RF output current from the filter;
- CHARACTERIZED IN THATsaid disk resonators are arranged in a coaxial stack, with a circular metal spacer sandwiched between any two neighboring disk resonators, any given said metal spacer having a central through-aperture, with a conductive member disposed in said through-aperture and electrically connecting said two neighboring disk resonators that are sandwiching said given metal spacer.
3 Assignments
0 Petitions
Accused Products
Abstract
The disclosed superconducting multipole RF filter comprises a multiplicity of coupled circular disk resonators designed for operation in the TM 010 mode. The disk resonators are arranged in a co-axial stack, with a circular metal spacer sandwiched between any two neighboring disk resonators. Each metal spacer has a central through-aperture, with a conductive member disposed in the through-aperture and electrically connecting the two neighboring disk resonators that are sandwiching a given metal spacer. A disk resonator comprises two circular members, each circular member comprising a circular dielectric substrate, exemplarily a LaAlO3 wafer. Superconducting layers (typically YBCO) are disposed on each major surface of the substrate. The two members are joined together such that conductive layers (typically gold) electrically connect the two outside superconducting layers. The disclosed RF filter has good power handling capability, is compact, has good heat removal and relatively simple tuning. It can, for instance, be advantageously used as transmit filter in base stations of a wireless communication system.
5 Citations
9 Claims
-
1. An article comprising a RF filter comprising a multiplicity of coupled circular disk resonators selected for operation in a resonator mode that has substantially no azimuthal current flow, and further comprising an input contact for providing a RF input current to the filter and an output contact for receiving a RF output current from the filter;
CHARACTERIZED IN THAT said disk resonators are arranged in a coaxial stack, with a circular metal spacer sandwiched between any two neighboring disk resonators, any given said metal spacer having a central through-aperture, with a conductive member disposed in said through-aperture and electrically connecting said two neighboring disk resonators that are sandwiching said given metal spacer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
Specification