High temperature superconductor lumped element band-reject filters

A superconductive band reject structure comprising:

• a substrate,
• a transmission line disposed on the substrate, and a superconductive lumped element structure which is epitaxial to the substrate comprising:
• an input pad, and
• a zig-zag conductor comprising an inductor and having one end thereof connected to the input pad and having another end thereof ending in a terminal end,
• the input pad and zig-zag conductor being disposed on the substrate and the input pad being electromagnetically coupled to the transmission line, the structure being operably considered for band reject operation.

A filter comprising:

• a substrate,
• an input coupling structure, an output coupling structure, and a plurality of planar lumped element bandpass resonator structures each disposed on the substrate,
• the lumped element bandpass resonator structures being connected in series, and configured for filtering operation,
• wherein each bandpass resonator structure comprises:
• an input pad,
• an output pad, and
• a zig-zag inductor connecting the input and output pads,
• a first lumped element bandpass resonator structure of said plurality of planar lumped element bandpass resonator structures having an input pad thereof adjacent the input coupling structure,
• the output pad of a particular one of said plurality of bandpass resonator structure, being capacitively coupled to the input pad of an adjacent bandpass resonator structure of said plurality of planar lumped element bandpass resonator structures, and
• a last lumped element bandpass resonator structure of said plurality of planar lumped element bandpass resonator structures having an output pad thereof adjacent the output coupling structure.

A bandreject filter comprising:

• a transmission line having an input for the filter and an output for the filter,
• a plurality of bandreject structures shunt coupled to the transmission line, at least one of said bandreject structures comprising:
• an input pad,
• a zig-zag inductor having a first end connected to the input pad, and having a second end defining a terminal end,
• where the input pad of each bandreject structure is capacitively coupled to the transmission line, the filter operably configured for bandreject operation.

A band reject filter comprising:

• a transmission line including an inductor having an input for the filter and an output for the filter,
• a plurality of band reject structures shunt coupled to the transmission line, at least one of said bandreject structures comprising:
• an input pad,
• a zig-zag inductor having a first end connected to the input pad, and having a second end defining a terminal end,
• where the input pad of each band reject structure is capacitively coupled to the transmission line, the filter operably configured for band reject operation.