Liquid Crystal Inductor with Magnetic Nanoparticles
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Solution Overview
Problem
Existing circuit configurations for varying inductance and capacitance, such as switched combinations of fixed-value inductors and capacitors, are limited in adaptability, size, weight, and power consumption, making them inadequate for quickly and efficiently adapting to a wide range of frequencies in radio frequency applications.
Innovation Solution
An adjustable inductor core composed of liquid crystals enhanced with magnetic nanoparticles, where the magnetic permeability is altered by changing the voltage applied to electrodes, allowing for rapid and efficient variation of inductance without increasing the size, weight, or power consumption of the circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If switched combinations of fixed-value inductors are used to vary inductance, then inductance can be adjusted, but the adaptation speed is slow and the circuit size and weight increase
Solution Approach 1:
The patent applies the dynamics principle by replacing static fixed-value inductors with a dynamic liquid crystal core whose magnetic permeability can be continuously adjusted in real-time through voltage control. The liquid crystal material's molecular orientation changes dynamically with applied voltage, enabling fast adaptation of inductance values without mechanical switching.
Solution Approach 2:
The patent implements parameter changes by controlling the magnetic permeability of the liquid crystal core through voltage adjustment. By changing the electric field applied to the liquid crystal, the magnetic permeability parameter is modified, which directly changes the inductance value. This allows continuous parameter adjustment rather than discrete fixed values.
2Adaptability or versatility
If switched combinations of fixed-value inductors are used to vary inductance, then inductance can be adjusted, but the circuit complexity increases
Solution Approach 1:
The patent merges multiple fixed-value inductor functions into a single liquid crystal-based adjustable inductor. Instead of using multiple discrete inductor components that need to be switched, the liquid crystal core provides continuous inductance adjustment within one integrated component, significantly reducing circuit complexity.
Solution Approach 2:
The liquid crystal core serves multiple functions simultaneously: it acts as the magnetic core, the adjustable element, and the control medium. A single component with voltage control provides the functionality that previously required multiple inductors and switching mechanisms, achieving multi-functionality and simplifying the overall circuit design.
3Adaptability or versatility
If switched combinations of fixed-value inductors are used to vary inductance, then inductance can be adjusted, but power consumption increases
Solution Approach 1:
The patent replaces the mechanical switching system with an electric field-based control mechanism. Instead of physically switching between inductor components using mechanical switches or relays, the liquid crystal's magnetic permeability is adjusted through applied voltage, creating an all-electronic control system that consumes less power.
4Adaptability or versatility
If switched combinations of fixed-value inductors are used to vary inductance, then inductance can be adjusted, but the inductor size and weight increase
Solution Approach 1:
The patent combines multiple inductor functions into a single liquid crystal-based component, eliminating the need for multiple discrete inductor assemblies. This integration significantly reduces the overall size and weight of the inductor assembly while maintaining the ability to provide a range of inductance values.
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
Enables fast and efficient adaptation of inductance across a wide range of frequencies, reducing the complexity and size of circuit networks while maintaining performance, particularly in radio frequency applications, and facilitating the development of smaller, lighter, and more cost-effective impedance matching and filtering networks.
Implementation Method 1
a core comprising a plurality of liquid crystals and a plurality of magnetic nanoparticles
Implementation Method 2
changing a voltage applied to the plurality of electrodes changes a magnetic permeability of the core
Data Source
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AI summary
A method and apparatus for managing a magnetic permeability (230) of a core (204). The apparatus comprises a core (204) and a plurality of electrodes (206) positioned relative to the core (204). The core (204) comprises a plurality of liquid crystals (220) and a plurality of magnetic nanoparticles (222). Changing a voltage (226) applied to the plurality of electrodes (206) changes a magnetic permeability (230) of the core (204).