Multi-Resonance Antenna for Compact Wireless Power and Data
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Solution Overview
Problem
Electronic devices, especially miniaturized ones like mobile communication terminals, face challenges in accommodating antenna devices due to limited space, and there is a difficulty in integrating different communication standards and wireless power transmission/reception antennas within a single device.
Innovation Solution
An antenna device with a radiation pattern that includes multiple radiation units and open boundaries, allowing for the formation of different resonance frequencies across various frequency bands, enabling the same device to operate for wireless power transmission/reception and data communication by selectively using the radiation units as short circuits or open circuits based on frequency, with active elements like PIN diodes or MEMS switches controlling the impedance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a miniaturized electronic device is designed to reduce size and weight, then portability is improved, but the available space for mounting antenna devices is reduced
Solution Approach 1:
The patent combines multiple antenna functions (wireless power transmission/reception and data communication) into a single integrated antenna device. The radiation pattern includes multiple radiation units that can operate at different frequency bands, allowing one antenna structure to replace what would traditionally require multiple separate antennas, thereby saving mounting space in miniaturized devices
Solution Approach 2:
The antenna device is designed with multi-functionality to perform both wireless power transmission/reception in the low-frequency band (5-15 MHz) and data communication in the high-frequency band (700 MHz-65 GHz). This universal design allows a single antenna structure to serve multiple purposes, eliminating the need for separate dedicated antennas for each function and thus preserving valuable mounting space in compact devices
2Adaptability or versatility
If separate antenna devices are provided for different communication standards and wireless power transmission, then communication functionality is improved, but device complexity and mounting difficulty are increased
Solution Approach 1:
The patent merges multiple antenna systems into a single integrated structure. The radiation pattern comprises multiple radiation units (first, second, third, and fourth radiation units) that can be selectively activated based on the required frequency band, consolidating what would traditionally be separate antenna devices into one unified system
Solution Approach 2:
The antenna device incorporates dynamic switching capability through active elements (such as PIN diodes or MEMS switches) that can change the impedance and electrical characteristics of the radiation units based on the operating frequency band. This allows the same physical structure to adapt its electrical length and resonance characteristics dynamically, enabling it to function as different antenna types depending on the required communication standard or power transmission mode
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 solution allows for a compact antenna device that can operate in multiple frequency bands, including low-frequency wireless power transmission and high-frequency data communication, making it suitable for devices with restricted space, and enabling simultaneous wireless power and data communication.
Implementation Method 1
a radiation pattern that includes a plurality of radiation units, the radiation pattern forms a resonance frequency in a first frequency band, and at least one of the radiation units forms a resonance frequency in a second frequency band that is higher than the first frequency band
Implementation Method 2
The secondary coil or the resonance circuit equipped in an electronic device receives power from a primary coil or a resonance circuit equipped in a power transmission device (e.g., a wireless charger), in an electromagnetic induction manner or a resonance manner
Implementation Method 3
with active elements like PIN diodes or MEMS switches controlling the impedance
Data Source
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AI summary
An antenna device of an electronic apparatus, according to embodiments of the present invention, includes radiation patterns comprising: at least one open boundary; and a plurality of radiation sections having the open boundary placed and arranged therebetween, wherein the radiation pattern forms a resonant frequency in a first frequency band (hereinafter, referred to as "a first resonance frequency") and at least one among the radiation sections can form a resonant frequency in a second frequency band (hereinafter, referred to as "a second resonant frequency band") higher than the first resonant frequency. The antenna device of the electronic apparatus, according to the present invention, can be implemented through other various embodiments.