Multi-Channel PCB Filter Layout for Low Electron Temperature
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Solution Overview
Problem
Existing signal filters for quantum computer processors do not effectively reduce electron temperature, leading to inefficiencies in signal transmission.
Innovation Solution
A multi-channel filter design comprising elongate signal tracks on a printed circuit board (PCB) with shielding tracks and an electromagnetically absorbing material to minimize cross-talk and reduce electron temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If existing signal filters are used for quantum computer processors, then signal transmission is maintained, but electron temperature is not effectively reduced
Solution Approach 1:
The filter is divided into multiple independent signal tracks (first, second, third signal tracks) with shielding tracks between them. Each signal track is electrically isolated and can be independently optimized for electron temperature reduction, allowing the system to maintain signal transmission efficiency while effectively reducing electron temperature through multiple parallel filtering paths
Solution Approach 2:
Shielding tracks are introduced as intermediary elements positioned between adjacent signal tracks. These shielding tracks act as electromagnetic shields that prevent cross-talk between signal tracks while maintaining the electrical isolation necessary for effective electron temperature reduction in each individual track
2Area of stationary object
If multiple signal tracks are placed close together on the PCB, then space is saved, but cross-talk between tracks increases
Solution Approach 1:
Shielding tracks are positioned between adjacent signal tracks to act as electromagnetic shields. These intermediary shielding elements block electromagnetic interference between closely spaced signal tracks, enabling compact PCB layout while preventing cross-talk through the shielding effect of the intermediate tracks
Solution Approach 2:
Each region between signal tracks is locally optimized by introducing shielding tracks at specific positions. The shielding tracks are strategically placed where electromagnetic interference is most likely to occur, providing localized protection against cross-talk while maintaining overall compactness of the PCB design
3Object-generated harmful factors
If signal tracks are electrically isolated to reduce cross-talk, then cross-talk is minimized, but signal transmission efficiency decreases
Solution Approach 1:
The filter is segmented into multiple independent signal tracks with electrical isolation between them. This segmentation prevents cross-talk by ensuring no galvanic connection exists between tracks, while the multi-track architecture maintains overall signal transmission efficiency by providing multiple parallel paths for signal processing
Solution Approach 2:
The patent accepts some signal attenuation due to electrical isolation as an acceptable trade-off, similar to using disposable or low-cost components where perfect performance is not required. The shielding tracks and electrical isolation provide sufficient cross-talk reduction without requiring complex high-performance connections that would compromise the filtering function
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 filter effectively reduces electron temperature and minimizes cross-talk, enhancing signal integrity and efficiency in quantum computer processors.
Implementation Method 1
a first electromagnetically absorbing material covering the first elongate signal tracks
Implementation Method 2
one or more first elongate shielding tracks each formed by an electrically conducting or absorbing path on the first surface, one of the first elongate shielding track(s) being positioned between each pair of neighbouring first elongate signal tracks
Data Source
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AI summary
A multi-channel filter with a PCB with a first side with signalling tracks and shielding tracks between neighbouring signalling tracks. On the second side, a conductive layer is provided. The signalling tracks are covered by an electromagnetically absorbing material, such as a powder of an electrically conducting material is provided. The filter may have sections with reversed structure where the conductors are on the second side and the layer on the first side, where the conductors on opposite sides are interconnected. The filter may be rolled or folded.