Antenna Component Series Resonator Coil Coupling
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Solution Overview
Problem
Existing magnetic field generation circuits face challenges in achieving strong magnetic field coupling between the primary coil and the secondary coil, leading to inefficient magnetic field radiation and reception.
Innovation Solution
The antenna component incorporates a magnetic core with a primary coil and a secondary coil wound in a specific configuration, along with a capacitor forming a resonator circuit, where the secondary coil's turning direction matches the primary coil's, enhancing magnetic field coupling while maintaining a simplified structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the secondary coil is connected in parallel to the primary coil with a resonant capacitor, then resonance occurs at the resonant frequency and magnetic field is radiated, but the magnetic field coupling between the primary coil and secondary coil is insufficient
Solution Approach 1:
The patent inverts the conventional connection approach by connecting the secondary coil in series with the resonant capacitor instead of in parallel. This series connection configuration, combined with the specific winding direction arrangement, creates strong magnetic field coupling between the primary and secondary coils while maintaining manufacturing simplicity. The series connection allows the magnetic flux to pass through both coils effectively, resolving the coupling insufficiency problem.
Solution Approach 2:
The patent introduces asymmetry in the winding directions of the coils. Specifically, the primary coil and secondary coil are wound in opposite directions (one clockwise, one counterclockwise when viewed from the same end), and the secondary coil has a different number of turns than the primary coil. This asymmetric configuration optimizes the magnetic field coupling while keeping the structure simple and easy to manufacture.
2Reliability
If the secondary coil and resonant capacitor form a parallel resonant circuit, then resonance enhances magnetic field radiation, but the structure becomes complex
Solution Approach 1:
The patent merges the resonant circuit function directly into the coil assembly by integrating the resonant capacitor with the secondary coil in a series configuration. This combination creates a compact resonant structure that achieves efficient magnetic field radiation without requiring separate parallel resonant circuit components, thereby reducing overall device complexity while maintaining resonance efficiency.
3Power
If alternating-current voltage is applied to the primary coil at resonant frequency, then resonance occurs in the parallel resonant circuit, but magnetic field coupling remains weak
Solution Approach 1:
The patent inverts the conventional parallel connection approach to a series connection between the secondary coil and resonant capacitor. This inversion, combined with opposite winding directions of the coils, creates strong magnetic field coupling that enables efficient power transfer and magnetic field radiation when alternating-current voltage is applied at the resonant frequency.
Solution Approach 2:
The patent changes the connection parameter from parallel to series, and modifies the winding direction parameter of the coils. These parameter changes optimize the magnetic field coupling coefficient and resonance characteristics, enabling efficient magnetic field radiation with strong coupling between primary and secondary coils at the resonant frequency.
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 significantly increases magnetic field coupling between the primary and secondary coils, reducing distortion in the magnetic flux density and simplifying the manufacturing process, resulting in improved radiation efficiency and cost-effectiveness.
Implementation Method 1
the capacitor forms a resonator circuit with the primary coil and the first secondary coil, and the resonator circuit is configured to cause a resonance when the signal has a resonance frequency of the resonator circuit
Implementation Method 2
a primary coil that is wound around the magnetic core and that has a first end and a second end, a first secondary coil that is wound around the magnetic core... the turning direction of the first secondary coil when viewed from the fourth end toward the third end is the same as a turning direction of the primary coil when viewed from the first end toward the second end
Data Source
AI summary
An antenna component includes a primary coil that has a first end and a second end and a first secondary coil that has a third end electrically connected to the first end via a capacitor and a fourth end electrically connected to the second end. The antenna component includes a first terminal electrically connected to the first end and a second terminal electrically connected to the second end. The capacitor forms a resonator with the primary coil and the first secondary coil. The first terminal and the second terminal are configured to receive a signal to the antenna component, the capacitor forms a resonator circuit with the primary coil and the first secondary coil, and the resonator circuit is configured to cause a resonance when the signal has a resonance frequency of the resonator circuit.