Graphene-Insulating-Superconducting Junction Microwave Detector
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Solution Overview
Problem
Existing microwave detectors are often large, have poor performance, or high power consumption, making them unsuitable for use in array detectors, particularly in military and commercial applications such as spectroscopy or microwave imaging.
Innovation Solution
A system comprising an array of resonators with graphene-insulating-superconducting junctions, a probe signal source, and a probe signal analyzer, which measures changes in the amplitude or phase of a probe signal to infer changes in microwave power received by the junctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional microwave detectors are used, then detection function is achieved, but device size is large and power consumption is high
Solution Approach 1:
The patent changes the operating parameters by using graphene-insulating-superconducting junctions with specific electrical characteristics (negative differential resistance region) to achieve detection at lower power consumption while maintaining performance. The junctions operate in a specific voltage/current parameter range that enables efficient microwave detection.
Solution Approach 2:
The patent employs a composite structure combining graphene, insulating materials, and superconducting materials to create junctions with unique electrical properties. This composite approach enables both low power consumption and high detection performance by leveraging the advantageous properties of each material.
2Area of stationary object
If traditional microwave detectors are used, then detection function is achieved, but device size is large
Solution Approach 1:
The patent divides the detector into multiple independent resonators, each capable of detecting specific frequency ranges. This segmentation allows for compact arrangement of multiple detection elements in an array configuration, reducing overall device size while maintaining detection performance through the collective operation of individual elements.
Solution Approach 2:
The patent transitions from conventional planar detector designs to a three-dimensional stacked configuration with multiple resonator layers. This dimensional change enables higher detection element density within a compact footprint, achieving array detector functionality in a reduced size.
3Adaptability or versatility
If an array of resonators with different resonant frequencies is used, then frequency selectivity is improved, but device complexity increases
Solution Approach 1:
The patent designs resonators that can operate across multiple frequency bands or be tuned to different frequencies, allowing a single resonator design to serve multiple detection functions. This multi-functionality reduces the number of different resonator types needed, simplifying the overall array complexity while maintaining frequency selectivity.
Solution Approach 2:
The patent employs可调 resonators whose resonant frequency can be changed or tuned, allowing a single resonator design to cover multiple frequency ranges. This parameter adjustability enables frequency-selective detection without requiring separate fixed-frequency resonators for each band, reducing device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides an improved microwave detector with enhanced performance and reduced power consumption, suitable for use in array detectors, enabling more effective detection of microwave power in various applications.
Implementation Method 1
Microwave power received by a graphene-insulating-superconducting junction causes a change in a differential impedance of the graphene-insulating-superconducting junction
Implementation Method 2
an array of resonators comprising a first resonator and a second resonator, wherein: the first resonator comprises a graphene-insulating-superconducting junction; the first resonator has a first resonant frequency; the second resonator comprises a graphene-insulating-superconducting junction; and the second resonator has a second resonant frequency different from the first resonant frequency
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A system for detecting microwave power. In some embodiments, the system includes: a first resonator (220) including a graphene- insulating-superconducting junction (100); a probe signal source (245), coupled to the first resonator; and a probe signal analyzer (270). The probe signal analyzer is configured: to measure a change in amplitude or phase of a probe signal received by the probe signal analyzer from the probe signal source, and to infer, from the change in amplitude or phase, a change in microwave power received by the graphene- insulating-superconducting junction.