Interlaced Inductor Windings for Harmonic Reduction
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Solution Overview
Problem
Conventional methods to mitigate the negative effects of harmonics in RF devices, such as second and third harmonics, often require external filters that affect circuit functionality and increase costs.
Innovation Solution
An inductor device design featuring interlaced windings on the same layer and strategically positioned capacitor connections to enhance inductance density, allowing for increased inductance without external filtering solutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If wires are disposed only at edges of the inductor device, then the structure is simple, but the inductance density is low
Solution Approach 1:
The patent transitions from a one-dimensional wire arrangement (only at edges) to a two-dimensional interlaced pattern that utilizes both edges and corners of the inductor device. This dimensional expansion allows wires to be positioned at multiple locations including corners, thereby increasing inductance density while maintaining manufacturing simplicity through the systematic interlaced configuration.
2Object-affected harmful factors
If external filters are added to mitigate harmonics, then harmonic interference is reduced, but circuit functionality is affected and costs increase
Solution Approach 1:
The inductor device performs self-filtering of harmonics through its internal interlaced wire structure and capacitive coupling mechanism. The alternating current paths created by the interlaced wires at corners generate opposing magnetic fields that cancel harmonic components, allowing the device to mitigate its own harmful effects without requiring external filter components, thus maintaining circuit functionality and reducing costs.
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 inductor device achieves at least a 50% enhancement in inductance compared to prior art, effectively reducing harmonic interference without the need for external filters, thus improving circuit performance and reducing costs.
Implementation Method 1
The first windings and the second windings are disposed to each other in an interlaced manner, and located at a first corner of the inductor device
Data Source
AI summary
An inductor device includes a first trace, a second trace, and a capacitor. The first trace includes a first sub-trace and a second sub-trace. The first sub-trace includes a plurality of first wires. The second sub-trace includes a plurality of second wires, wherein the first wires and the second wires are disposed on the same layer. The first wires and the second wires are disposed to each other in an interlaced manner, and located at a first corner of the inductor device. The second trace includes a third sub-trace and a fourth sub-trace. The capacitor is coupled between the first sub-trace and the third sub-trace.