Cryogenic-stripline microwave attenuator

A device, comprising:

• an attenuator, comprising,
• a first sapphire substrate;
• a second sapphire substrate;
• and
• a signal conductor between the first sapphire substrate and the second sapphire substrate, the signal conductor compressed by a compression component that presses the first sapphire substrate against one side of the signal conductor and presses the second sapphire substrate against another side of the signal conductor.

A device, comprising:

• a cryogenic-stripline microwave attenuator, comprising,
• a signal conductor comprising an attenuator, the signal conductor having a substantially first flat side and a substantially second flat side opposite the first flat side;
• a first high thermal conductivity substrate pressed against the first side of the signal conductor by a compression component;
• and
• a second high thermal conductivity substrate pressed against the second side of the signal conductor by the compression component.

A method, comprising:

• constructing a cryogenic-stripline microwave attenuator, comprising,
• embedding attenuator lines between a first high thermal conductivity substrate and a second high thermal conductivity substrate;
• and
• pressing the substrates into the attenuator lines, comprising pressing the first high thermal conductivity substrate against one side of the signal conductor and pressing the second high thermal conductivity substrate against another side of the signal conductor.