Coil Component With Segmented Internal Coil And Adjustable Taps
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Solution Overview
Problem
Miniaturized electronic devices require coil components with high Q characteristics and adjustable inductance to operate effectively at high frequencies, while existing technologies struggle to optimize the shape and structure of coil components for these requirements.
Innovation Solution
A coil component design featuring a body part with an internal coil and multiple external electrodes, allowing for various connections and inductance adjustments, including three or more connection ports that enable flexible inductance values by combining connections, and utilizing a stacking method with dielectric sheets and conductive materials to form a closed magnetic path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional inductor structure is used, then the device can be manufactured with simple structure, but the quality factor Q is low and inductance adjustment is difficult
Solution Approach 1:
The inductor coil is divided into multiple segments with different numbers of turns in different regions. The coil pattern is segmented into a first region with a first number of turns and a second region with a second number of turns, allowing independent optimization of each segment to achieve high Q characteristics while maintaining manufacturability
Solution Approach 2:
The patent introduces adjustable elements that allow the inductance value to be dynamically changed. By controlling the number of effective turns through external connections or internal switches, the inductor can adapt its inductance value to different operating conditions, achieving high Q across varying frequencies and loads
2Volume of moving object
If the coil component is miniaturized, then it can fit miniaturized electronic devices, but the inductance adjustment capability is reduced
Solution Approach 1:
Multiple functional elements are nested within a compact structure. The coil patterns are embedded within the body part, and adjustable connection points are integrated into the coil structure itself. This nesting allows the inductor to maintain small size while incorporating multiple taps and adjustment mechanisms for versatile inductance control
Solution Approach 2:
The patent utilizes three-dimensional space efficiently by forming coil patterns on multiple layers or surfaces. The coil patterns are arranged in a manner that exploits vertical or lateral dimensions, allowing increased inductance density and adjustment capability within a reduced footprint volume
3Speed
If high frequency operation is required, then the component must operate at 100 MHz or more, but loss increases and Q characteristics deteriorate
Solution Approach 1:
Different regions of the coil are designed with different characteristics optimized for high-frequency operation. The first and second regions have different turn densities and geometries that minimize skin effect and proximity effect losses at 100 MHz and above. Connection points are strategically positioned to minimize parasitic inductance and resistance
Solution Approach 2:
The patent employs composite structures combining different materials with complementary properties. The body part and insulation layers use materials with low loss tangents at high frequencies, while conductive layers use materials optimized for high-frequency current distribution. This composite approach minimizes dielectric and conductor losses in the high-frequency regime
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 design achieves high Q characteristics and allows for easy adjustment of inductance values, enabling the coil component to operate effectively at high frequencies with reduced loss and improved contact reliability.
Implementation Method 1
an internal coil including one end and another end
Implementation Method 2
one or more via electrodes penetrating through insulating layers disposed between the plurality of body sheets
Data Source
AI summary
A coil component includes a body part including an internal coil including one end and another end; a first external electrode connected to the one end of the internal coil; a second external electrode connected to the another end of the internal coil; and a third external electrode connected to a first point between the one end of the internal coil and the another end of the internal coil.