High Tc superconducting high power filters

Details High Tc superconducting high power filters High Tc superconducting high power filters

1993-08-13

1995-04-18

Lee, Benny T.

Superconductor technology: apparatus, material, process

High temperature devices, systems, apparatus, com- ponents,...

High frequency waveguides, resonators, electrical networks,...

505700, 505866, 333 99S, 333212, H01P 1208, H01P 1209, H01B 1202

Patent

active

054079047

ABSTRACT:
To reduce the losses, high Tc superconductive waveguide filters are disclosed. There are two approaches to make the filters. In the first approach, all waveguide sections, irises, flanges are made of a single crystal high Tc superconductor. The single crystal is machined to the desired shape and size, the pieces are brazed and connected with flanges. In the second approach all waveguide sections, irises and flanges are made of a single crystal dielectric material the conducting surfaces of which are deposited with a film of a single crystal high Tc superconductor. The waveguide sections, irises and flanges are connected together by brazing or by a similar method. There are two basic types, (1) band pass and (2) band reject, of filters. In the band pass type, a series of resonators are placed one after another with a separation, typically, of three quarters of a wavelength between the centers of adjacent resonators. In the band reject filters, the resonators are in branch lines, i.e., on the broad wall of the main waveguide with a separation, typically, of three quarters of a wavelength between the centers of adjacent resonators.

REFERENCES:
patent: 4849724 (1989-07-01), Koreeda
patent: 5268659 (1993-12-01), Zaki et al.

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