Superconducting amplifying circuit

An amplifying circuit and superconducting technology, applied in the field of superconducting integrated circuits, can solve problems such as small working range, reduced system construction flexibility, and low magnification, and achieve the effect of increasing flexibility

Inactive Publication Date: 2021-06-18
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former is a very widely used superconducting device with very sensitive magnetic induction ability and can be easily driven by SFQ signal to work, but SQUID has a large area and low magnification; the latter has the advantages of small area and high magnification , but it is difficult to be driven by the SFQ

Method used

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Embodiment Construction

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0029] Such as figure 1 Shown, a kind of superconducting amplifying circuit of the embodiment of the present invention comprises Josephson transmission line (JTL) array, double magnetic flux quantum amplifier (DFQA) and Josephson latch driver (JLD);

[0030] The Josephson transmission line (JTL) array 11 receives an input single flux quantum (SFQ) signal, and generates a series of single flux quantum (SFQ) signals;

[0031] The dual magnetic flux quantum amplifier (DFQA) 12 receives a series of SFQ signals generated by the JTL array and generates a level signal to generate a current for driving the JLD operation;

[0032] The Josephson latch driver (JLD) 13 generates a stable output voltage under the joint action o...

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Abstract

The invention relates to a superconducting amplifying circuit, and belongs to the field of superconducting integrated circuits. The superconducting amplification circuit comprises a Josephson transmission line (JTL) array which is used as a signal multiplication circuit and is used for receiving an input single flux quantum (SFQ) signal and sending a string of SFQ signals; the double flux quantum amplifier (DFQA) is used as a first-stage amplification circuit, receives a string of SFQ signals from the JTL array to generate a level signal, and is used for providing a driving current for a subsequent circuit; and the Josephson latch driver (JLD) is used as a second-stage amplification circuit, receives the driving current provided by the DFQA, and generates an output voltage of dozens of millivolts under the condition of bias so as to drive the semiconductor integrated circuit. According to the superconducting amplifying circuit, compromise in circuit performance and area is achieved, the amplifier is divided into two stages, the two stages of amplifiers can be packaged separately, and the flexibility of circuit application is improved.

Description

technical field [0001] The invention belongs to the field of superconducting integrated circuits, and in particular relates to a superconducting amplifying circuit. Background technique [0002] The traditional semiconductor manufacturing technology will be developed to the end, and Moore's Law is no longer applicable. The whole world is looking for new materials, new technologies to improve the performance of circuits. Superconducting integrated circuits have the characteristics of high speed, high performance and low power consumption, and are an important direction for the development of integrated circuits, but there are also many shortcomings. Superconducting circuit signal-single-flux-quantum (SFQ) signal is a very small pulse signal, which is difficult to drive commonly used circuits at room temperature, and superconducting memory is difficult to design and has a huge area, which is difficult to use as a superconducting Computer storage devices, so superconducting c...

Claims

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Application Information

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IPC IPC(8): H03F19/00
CPCH03F19/00
Inventor 彭析竹张良赵瑞扬周正柯
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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