Switchable Coupled Inductor for Multi-Band Circuit Area Reduction
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Solution Overview
Problem
Current integrated circuit designs require multiple inductors to accommodate different frequency bands, leading to increased circuit area due to the need for separate inductors for each circuit.
Innovation Solution
An inductor apparatus with a dynamic inductance adjusting mechanism, comprising a primary coil, a secondary coil, and a pair of switch circuits. The switch circuits control the secondary terminals to either float or be electrically coupled to the primary terminals, adjusting the equivalent coil width and inductance accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple inductors are disposed to match different frequency band requirements, then the frequency adaptability is improved, but the circuit area increases
Solution Approach 1:
The patent implements dynamic inductance adjustment by using switch circuits to reconfigure the connection states of secondary coils around the primary coil. The inductance value can be dynamically changed by controlling the switch circuits to connect or disconnect secondary coils, allowing a single inductor apparatus to adapt to different frequency bands without requiring multiple fixed inductors, thus resolving the contradiction between frequency adaptability and circuit area.
Solution Approach 2:
The inductor apparatus is designed with multi-functionality by incorporating a primary coil surrounded by multiple secondary coils that can be selectively connected. This universal design allows the same inductor structure to serve multiple frequency band requirements by adjusting the connection configuration, eliminating the need for separate dedicated inductors for each frequency band and reducing overall circuit area.
2Area of stationary object
If a single inductor is used for multiple frequency bands, then the circuit area is reduced, but the inductance adjustment capability is limited
Solution Approach 1:
The patent employs dynamic switching mechanisms that allow the inductance of the single inductor apparatus to be adjusted in real-time. The switch circuits can connect or disconnect secondary coils based on control signals, enabling the inductance value to be dynamically adapted to different frequency band requirements, thus providing sufficient inductance adjustment capability while maintaining a compact single-inductor structure.
Solution Approach 2:
The inductor apparatus is segmented into a primary coil and multiple secondary coils that can be independently connected or disconnected. This segmentation allows flexible combination of coil sections to achieve different inductance values, enhancing the inductance adjustment capability of the single inductor structure without requiring multiple separate inductors.
3Adaptability or versatility
If multiple separate inductors are used for different circuits, then the frequency band requirements are satisfied, but the device complexity increases
Solution Approach 1:
The patent designs a universal inductor apparatus that can satisfy multiple frequency band requirements through a single multi-functional structure. The primary coil surrounded by multiple selectable secondary coils creates a versatile component that can be configured for different frequency bands, reducing the number of separate inductor components needed and thereby simplifying the overall circuit complexity.
Solution Approach 2:
The patent merges multiple inductor functions into a single integrated inductor apparatus. By combining the primary coil with multiple secondary coils that can be selectively connected, the design consolidates what would traditionally require multiple separate inductors into one unified structure, reducing device complexity while maintaining comprehensive frequency band coverage.
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 dynamic inductance adjustment allows for a single inductor apparatus to operate effectively across different frequency bands, reducing circuit area and improving frequency flexibility.
Implementation Method 1
An inductor is an electronic component that generates an electromotive force against a variation of a current flowing therethrough
Data Source
AI summary
The present disclosure discloses an inductor apparatus having dynamic inductance adjusting mechanism that includes a primary coil, a secondary coil and a pair of switch circuits. The primary coil includes a primary coil main body and a pair of primary terminals that electrically coupled an external circuit. The secondary coil has a secondary coil main body electrically coupled to the primary coil main body and a pair of secondary terminals. A first one of the primary coil main body and the secondary coil main body surrounds a second one of the primary coil main body and the secondary coil main body. The switch circuits control the pair of secondary terminals to be floating in a first mode and controls the pair of secondary terminals to be electrically coupled to the pair of primary terminals in a second mode.