Integrated Thin Film Flux Generator and Sensor on Single Substrate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing magnetic circuit devices with flux generators and sensors are large and cumbersome due to separate fabrication and assembly, lacking high flux transfer efficiency, which is necessary for effective electrical signal processing.
Innovation Solution
A thin film magnetic circuit with integrated flux generators and sensors on a single substrate, utilizing conductive induction lines and yokes with pole tips and gaps to enhance flux transfer efficiency, allowing for complex output signals and high flux coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flux generator and sensor are fabricated separately and assembled proximate each other, then device functionality is achieved, but device size becomes large and cumbersome
Solution Approach 1:
The patent combines the flux generator and magnetic sensor into a single integrated device fabricated on one substrate. The flux generator includes conductive induction lines surrounded by a yoke with pole tips, while the magnetic sensor is positioned in the gap between pole tips. This merging eliminates the need for separate fabrication and assembly, reducing device size while maintaining functionality.
2Ease of manufacture
If flux generator and sensor are assembled separately, then device can be constructed, but flux transfer efficiency between them is reduced
Solution Approach 1:
By integrating the flux generator and sensor on a single substrate with the sensor positioned directly in the gap between the pole tips, the patent ensures optimal magnetic flux coupling. This eliminates air gaps and misalignment issues that would reduce flux transfer efficiency in separately assembled devices.
3Reliability
If multiple flux generators and sensors are integrated on single substrate, then flux transfer efficiency is improved, but device complexity increases
Solution Approach 1:
The patent employs a yoke structure that can serve multiple flux generators simultaneously, providing a common magnetic path. This universal structure reduces overall device complexity compared to having separate yokes for each flux generator-sensor pair, while maintaining high flux transfer efficiency for all integrated components.
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 integration of flux generators and sensors on a single substrate enables compact, high-efficiency electrical signal processing with improved flux transfer, enabling complex signal processing and amplification capabilities.
Implementation Method 1
Each flux generator includes at least one conductive induction line that is connected to at least one lead of a pair of input leads
Implementation Method 2
a yoke that surrounds the conductive induction line. The yoke has at least one pair of pole tips and a gap is disposed between the end surfaces of each pair of pole tips
Implementation Method 3
The magnetic sensor may be a current perpendicular to the plane (CPP) sensor or a current in the plane (CIP) sensor, and it may be a magnetoresistive sensor, an anisotropic magnetoresistive sensor, a giant magnetoresistive sensor
Data Source
AI summary
An electrical signal processing device includes at least one thin film flux generator and at least one thin film magnetic sensor. Each flux generator includes at least one conductive induction line that is connected to at least one lead of a pair of input leads, and a yoke that surrounds the conductive induction line. The yoke has at least one pair of pole tips, and a gap is disposed between the end surfaces of each pair of pole tips. A magnetic sensor is disposed in the gap, and a pair of output leads is connected to the sensor. An alternative embodiment may include two or more conductive induction lines that are connected to respective separate pairs of input leads. Alternatively, two or more conductive induction lines may connect to one another to form an induction coil. The flux generator and magnetic sensor are preferably formed on a single substrate to create an integrated device.