Cryogenic Microwave Analyzer

A technology of microwave radiation and microwave filter, applied in instruments, thermometers, scientific instruments, etc., can solve problems such as expensive and difficult reference signals
CN110383020BActive Publication Date: 2022-01-07IQM FINLAND OY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
IQM FINLAND OY
Publication Date
2022-01-07

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Abstract

A microwave radiation detector includes a signal input (401) and a detector output (402). An absorber element (404) having ohmic conductivity is coupled to said signal input (401) through a first length superconductor (405). A variable impedance element (406) is coupled to the detector output (402) through a second length of superconductor (407), the impedance of the variable impedance element being configured to vary with temperature. Also included are a heating input (408) and a heating element (409) coupled to the heating input (408) through a third length of superconductor (410). The absorber element (404), the variable impedance element (406) and the heating element (409) pass through lengths shorter than the first length superconductor (405), second length superconductor (407) and third length superconductor (405) The superconductor portions of any one of are connected to each other (410).
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Description

technical field

[0001] The invention relates to the field of detection and measurement of electromagnetic energy at microwave frequencies. In particular, the present invention relates to an ultrasensitive detector structure and device capable of detecting extremely small amplitude microwave signals. Background technique

[0002] Ultrasensitive detection methods of received electromagnetic radiation include calorimetry and bolometery. A calorimeter is a device in which the instantaneous rise in temperature of a detector element decays exponentially towards the temperature of a surrounding thermal bath. A bolometer has a detector element and a thermal bath, but the method measures power (energy over time), the average flux of incoming photons, rather than the precise energy of individual photons.

[0003] Therefore, the schematic diagram of Figure 1 applies to both calorimeters and bolometers. The incident radiation 101 is absorbed in the absorber 102 such that the absorbed...

Claims

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