Loop Antenna Switch Circuit for Voltage Stabilization
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Solution Overview
Problem
Electronic devices with radiators face unstable voltage levels due to backward current flow from the radiator to the battery, making stable power supply challenging, and the use of capacitive elements increases device volume and manufacturing costs.
Innovation Solution
An electronic device with a loop antenna, printed circuit board, and switches controlled by a processor to manage power flow, allowing controlled discharge of power to the radiator, reducing backward current flow and potentially eliminating the need for large capacitive elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a capacitive element is added to stabilize voltage level, then voltage stability is improved, but device volume and manufacturing cost increase
Solution Approach 1:
The patent extracts the voltage stabilization function from a separate capacitive element and integrates it into the existing battery-radiator circuit through controlled switching. The switch enables the battery to directly stabilize voltage for the radiator without requiring an additional capacitive element, thereby maintaining voltage stability while reducing device volume.
Solution Approach 2:
The battery is made multi-functional by enabling it to perform both power supply and voltage stabilization functions. Through the switch, the battery can selectively connect to the radiator to provide stable voltage, eliminating the need for dedicated capacitive elements and reducing overall device volume.
2Reliability
If a capacitive element is added to stabilize voltage level, then voltage stability is improved, but manufacturing cost increases
Solution Approach 1:
The patent removes the need for separate capacitive elements by extracting the voltage stabilization function and implementing it through the existing battery and switch combination. This eliminates additional component costs and simplifies the manufacturing process.
Solution Approach 2:
The patent uses a simple switch, which is a low-cost component, to achieve voltage stabilization instead of expensive capacitive elements. The switch provides an economical solution that maintains voltage stability while significantly reducing manufacturing costs.
3Device complexity
If battery supplies power to radiator directly, then power supply is simple, but voltage level becomes unstable due to backward current
Solution Approach 1:
The switch acts as an intermediary component between the battery and radiator. It controls the power flow direction, allowing the battery to supply power to the radiator while preventing backward current from destabilizing the voltage level. This simple intermediary element maintains both power supply simplicity and voltage stability.
4Reliability
If switch is added to control power flow, then voltage stability is improved, but device complexity increases
Solution Approach 1:
The switch serves as a simple intermediary that provides voltage stabilization through basic on/off control. Its straightforward design and operation minimize the increase in device complexity while effectively preventing backward current and stabilizing voltage levels.
Data Source
AI summary
An electronic device according to an embodiment of the disclosure may include a loop antenna, a printed circuit board including a power wire and a ground wire, a first switch electrically connected between a first terminal of the loop antenna and the power wire, a second switch electrically connected between the first terminal and the ground wire, a third switch electrically connected between a second terminal of the loop antenna and the power wire, a fourth switch electrically connected between the second terminal and the ground wire, and a controller.