Wound Inductive-Capacitive Filter Assembly for Precise Bandstop Tuning
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Solution Overview
Problem
Conventional bandstop filters are large, costly, and difficult to construct, especially for high power applications, and they often suffer from impedance limitations and parasitic effects that make precise bandstop characteristics difficult to achieve.
Innovation Solution
Inductive-capacitive filters are constructed without discrete inductors or capacitors, using a conductive strip wound in parallel with an insulating strip around a winding axis, allowing for precise tuning of bandstop characteristics and minimizing filter size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional discrete component bandstop filters are used, then signal filtering function is achieved, but filter size becomes large and manufacturing complexity increases
Solution Approach 1:
The patent combines the inductor and capacitor into a single integrated strip structure. The conductive strip forms both the inductive element (through its geometry and winding) and the capacitive element (through adjacent parallel sections), eliminating the need for separate discrete components and significantly reducing filter size.
Solution Approach 2:
The conductive strip is wound around a magnetic core in a nested configuration, with the magnetic core providing enhanced inductance within the compact strip structure. This nested arrangement allows the filter to achieve the required electrical characteristics in a minimized volume.
2Reliability
If conventional discrete component bandstop filters are used, then signal filtering function is achieved, but manufacturing cost and construction difficulty increase
Solution Approach 1:
By integrating multiple functional elements (inductor, capacitor, and magnetic core mounting) into a single strip component, the patent reduces the number of assembly steps and component handling required during manufacturing, thereby lowering construction difficulty and associated costs.
Solution Approach 2:
The patent enables easy tuning of filter characteristics by adjusting geometric parameters of the conductive strip (such as width, length, and winding configuration) rather than requiring precise manufacturing of multiple discrete components. This parameter-based tuning simplifies the manufacturing process and reduces costs.
3Reliability
If conventional discrete component bandstop filters are used, then basic filtering is achieved, but precise bandstop characteristics are difficult to achieve due to impedance limitations and parasitic effects
Solution Approach 1:
The patent achieves precise bandstop characteristics by carefully controlling the geometric parameters of the conductive strip (width, length, spacing, and winding configuration) and the properties of the magnetic core. These parameter adjustments allow precise control of the filter's resonant frequency and impedance characteristics, overcoming the limitations of conventional discrete component filters.
Solution Approach 2:
The combination of the conductive strip with specific magnetic core materials creates a composite structure that enhances the filter's electrical characteristics. The magnetic core provides high permeability that strengthens the inductive effect, while the conductive strip's geometry provides capacitive coupling, together achieving precise bandstop characteristics that are difficult to obtain with discrete components alone.
4Volume of moving object
If filter size is reduced, then manufacturing cost decreases, but achieving precise bandstop characteristics becomes more difficult
Solution Approach 1:
The patent maintains precise bandstop characteristics in a compact form by using parameter optimization of the conductive strip geometry and magnetic core properties. The integrated design allows for precise control of electrical characteristics through geometric parameters rather than component tolerances, achieving both small size and high precision.
Solution Approach 2:
The composite structure of the conductive strip and magnetic core creates enhanced electromagnetic properties in a compact volume. The magnetic core's high permeability concentrates magnetic flux within the small strip structure, maintaining strong inductive effects despite reduced size, while the strip's geometry provides the necessary capacitive coupling for precise resonance control.
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 inductive-capacitive filters achieve small size, low cost, and ease of manufacturing, with minimal resistive losses and precise bandstop characteristics, enabling efficient signal attenuation across varying applications.
Implementation Method 1
an inductive-capacitive filter includes a first insulating-conductive strip wound around a winding axis, where the first insulating-conductive strip includes a first conductive strip joined with a first insulating strip
Implementation Method 2
The first conductive strip is wound in parallel with the first insulating strip around the winding axis
Data Source
AI summary
An inductive-capacitive filter includes a first insulating-conductive strip wound around a winding axis, where the first insulating-conductive strip includes a first conductive strip joined with a first insulating strip. An inductive-capacitive filter assembly includes a first and a second insulating-conductive strip concentrically wound around a winding axis, the first insulating-conductive strip including a first conductive strip joined with a first insulating strip, and the second insulating-conductive strip including a second conductive strip joined with a second insulating strip.