Concentric Solenoid and Permanent Magnet Magnetic Structure
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Solution Overview
Problem
Modern signal generators and measurement devices require high-quality high frequency signals with low phase noise, which are challenging to achieve with existing YIG oscillators due to the complexity and large assembly volume required for generating strong adjustable magnetic fields.
Innovation Solution
A magnetic structure for electromagnetic resonators comprising a solenoid and a permanent magnet arranged concentrically within a housing element with high magnetic permeability, where the magnetic field lines of the permanent magnet are perpendicular to those generated by the solenoid, reducing assembly volume and enhancing sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a solenoid is used to generate a strong magnetic field for YIG oscillators, then the magnetic field strength is sufficient for high frequency signal generation, but the assembly volume becomes large and the device complexity increases
Solution Approach 1:
The patent combines a permanent magnet and a solenoid into a single integrated magnetic structure. The permanent magnet provides a strong static magnetic field while the solenoid provides adjustable field control, achieving both high magnetic field strength and compact size by merging two separate components into one unified structure.
Solution Approach 2:
The solenoid is positioned concentrically around the permanent magnet, with the permanent magnet located at the center of the solenoid winding. This nested arrangement allows the weaker permanent magnet field to be amplified by the solenoid's magnetic field, achieving strong overall magnetic field strength in a compact configuration.
2Power
If a permanent magnet is combined with an electromagnet to generate strong magnetic fields, then the magnetic field strength is improved, but the device complexity and assembly volume increase
Solution Approach 1:
The patent merges the permanent magnet and electromagnet into a single integrated structure where the permanent magnet is positioned at the center of the solenoid. This unified design simplifies the overall device structure while maintaining the ability to generate strong, adjustable magnetic fields through the cooperative action of both components.
3Measurement precision
If the solenoid and permanent magnet are arranged concentrically with perpendicular magnetic field lines, then the sensitivity and performance are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent employs asymmetric magnetic field orientation where the permanent magnet's field lines are arranged perpendicular to the solenoid's field lines in the inner area. This asymmetric perpendicular arrangement optimizes the magnetic field interaction for enhanced sensitivity while the concentric geometric symmetry simplifies the alignment requirements during manufacturing.
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
This configuration enables the generation of high-quality high frequency signals with reduced assembly volume and power loss, suitable for use in oscillators and frequency filters, particularly in signal generators and measurement devices like spectrum analyzers.
Implementation Method 1
a solenoid (20) and a first permanent magnet (30), wherein the solenoid (20) and the first permanent magnet (30) are concentrically arranged to each other with respect to a predetermined axis (B-B)
Implementation Method 2
The magnetic field lines of the first permanent magnet (30) are essentially perpendicular to the magnetic field lines of a magnetic field generated by the solenoid (20)
Implementation Method 3
a first permanent magnet (30), wherein the solenoid (20) and the first permanent magnet (30) are concentrically arranged to each other
Implementation Method 4
housing element (10) with high magnetic permeability
Implementation Method 5
The magnetic field lines of the first permanent magnet (30) are essentially perpendicular to the magnetic field lines of a magnetic field generated by the solenoid (20), at least in an inner area of the concentrically arranged solenoid (20) and first permanent magnet (30)
Data Source
AI summary
A magnetic structure for an electromagnetic resonator is provided. The magnetic structure comprises at least a solenoid and a permanent magnet, wherein the solenoid and the permanent magnet are concentrically arranged to each other such that the magnetic field lines provided by the permanent magnet are at least essentially perpendicular to magnetic field lines of a magnetic field generated by the solenoid. The arrangement of the permanent magnet and the solenoid may be housed by an element with a high magnetic permeability.