Superconducting output amplifiers with interstage filters

TWI937198BActive Publication Date: 2026-09-01MICROSOFT TECHNOLOGY LICENSING LLC
View PDF 4 Cites 0 Cited by

Patent Information

Application Number
TW111106778
Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-03-26
Filing Date
2022-02-24
Publication Date
2026-09-01
Estimated Expiration
2042-02-23

AI Technical Summary

Technical Problem

CMOS-based digital circuits face limitations in component size and high power consumption due to leakage currents, leading to inefficiencies in data centers and other applications.

Method used

Implementing superconducting output amplifiers with interstage filters using damped Josephson junctions to reduce distortion and power dissipation, utilizing superconducting logic that includes a stack of DC-SQUID stages and interstage filters to convert SFQ pulses into output voltage waveforms.

Benefits of technology

The solution reduces waveform distortion and power dissipation, enhancing the efficiency and performance of superconducting output amplifiers by minimizing ringing and back-coupling effects.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure TWG2TB001908175_001
    Figure TWG2TB001908175_001
  • Figure TWG2TB001908175_002
    Figure TWG2TB001908175_002
  • Figure TWG2TB001908175_003
    Figure TWG2TB001908175_003
Patent Text Reader

Abstract

A superconducting output amplifier with an interstage filter and related methods are described. An example superconducting output amplifier includes a first superconducting output amplifier stage and a second superconducting output amplifier stage. The superconducting output amplifier may further include a first terminal for receiving a first single flux quantum (SFQ) pulse train and coupling the SFQ pulse train to each of the first and second superconducting output amplifier stages. The superconducting output amplifier may further include an interstage filter comprising a damped Josephus junction (JJ) coupled between the first and second superconducting output amplifier stages, wherein the interstage filter is arranged to reduce distortion of the output voltage waveform generated by the superconducting output amplifier in response to at least the first SFQ pulse train.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Superconducting phase-shift system

    US20160087599A1

  • Superconductor analog to digital converter

    US20200127678A1

  • On-chip SQUID cascade

    US4496854A

  • Superconducting analog amplifier circuits

    US5936458A