Unlock instant, AI-driven research and patent intelligence for your innovation.

Noise suppressing interface circuit for device with control circuits in different noise environments

A technology of interface circuit and noise suppression, applied in the field of noise suppression interface circuit

Pending Publication Date: 2021-12-10
量子欧普斯公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is undesirable because the amount of wiring going into and out of the cryostat is often the limiting factor in how many superconducting devices can be operated at one time (limiting the number of optical channels or the size of multi-element detector arrays)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Noise suppressing interface circuit for device with control circuits in different noise environments
  • Noise suppressing interface circuit for device with control circuits in different noise environments
  • Noise suppressing interface circuit for device with control circuits in different noise environments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] While the invention is capable of embodiments in different forms, specific embodiments are shown in the drawings and will be described in detail herein, it should be understood that the disclosure is illustrative of the principles of the invention and should not be construed as The invention is limited within the scope shown in the drawings.

[0012] figure 1 It is a circuit diagram of the cryogenic interceptor plate 10 provided with the interface circuit 12 according to the embodiment of the present invention. As shown, the interface circuit 12 preferably has two low-pass filters 14 , 16 connected in parallel and a blocking capacitor 18 connected in series with one of the low-pass filters 16 . In the cryostat 22 , the circuit 12 is preferably arranged on the interceptor circuit board 10 and connected in series with the nanowire 20 . Intercept circuit board 10 preferably communicates with devices in non-cryostat environment 23, such as connecting to biaser 24, which r...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A thermal and environmental noise suppressing interface circuit which is configured to operate cold and is configured to perform biasing with suppression of noise currents from room temperature noise voltages and dc coupled rf readout of a superconducting device under test with a single coaxial cable or equivalent conductor pair. The circuit is configured to suppress the propagation of thermal and environmental noises to / from sensors operating at a different temperature from its operating and control equipment while maintaining a single input-output channel, and provides for the placement of a local grounding impedance on an intercept board.

Description

technical field [0001] The present invention relates generally to noise suppression interface circuits, and more particularly, to an interface circuit configured to reduce noise caused by ground loops, external sources of electromagnetic interference, and / or sensors operating at a different temperature than the device it operates and controls. noise caused by thermal differences between them while maintaining a single input and output channel. Background technique [0002] Typical operation of a cryogenic amplifier with a sensor such as a superconducting nanowire single-photon detector is achieved by placing a cryogenic bias tee between the nanowire and the amplifier, except for the power supply lines required by the amplifier Also, there are two wires connected to the cryostat's electrical feedthrough (one for the low frequency bias / dc connection and one for the high frequency rf signal). In other words, separate input and output electrical channels are required. This is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H03H7/54H03F1/08H03H7/01H03H7/06G01J1/44H03G1/04H03F19/00H03F1/30
CPCG01J2001/444G01J2001/442G01J1/42G01J1/46G01J2001/0276G01J1/0252G01J1/44H03H7/06H03F1/30H03F1/26H03F2200/165H03F2200/447H03F2200/114H03F2200/451H03F3/08H03F19/00
Inventor A·米勒T·兰博
Owner 量子欧普斯公司