Combo Antenna Module Mode Switching for Wireless Power Range
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Solution Overview
Problem
Portable electronic devices face challenges in expanding the range and improving the efficiency and performance of wireless power transmission and communication due to the need for multiple antennas with different frequencies, which complicates the implementation of additional patterns for NFC or A4WP antennas without affecting existing WPC, PMA, or MST antennas.
Innovation Solution
A combo antenna module with a switching unit that includes a circuit board with a first antenna for magnetic resonance and a second antenna for magnetic induction, where capacitors and a switch allow for mode switching to form a closed loop, enhancing the range and efficiency of wireless power transmission by coupling antennas of different frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate antennas are provided for different frequencies and applications, then the wireless power transmission and communication functions are covered, but the device complexity and space occupation increase
Solution Approach 1:
The patent combines multiple antenna functions (NFC, A4WP, WPC, PMA, MST) into a single integrated antenna unit. The antenna unit includes a first antenna for magnetic resonance wireless power transmission and a second antenna for other wireless communications, merging what would traditionally require separate antenna components into one unified structure that occupies less space and reduces overall device complexity.
Solution Approach 2:
The integrated antenna unit is designed to perform multiple wireless communication and power transmission functions simultaneously. The first antenna supports both magnetic resonance wireless power transmission and NFC/A4WP communications, while the second antenna handles WPC, PMA, and MST functions, making each antenna component multi-functional rather than single-purpose.
2Adaptability or versatility
If additional patterns are added for NFC or A4WP antennas, then the wireless power transmission range is expanded, but the existing WPC, PMA, or MST antenna performance may be affected
Solution Approach 1:
The antenna unit is segmented into distinct first and second antenna components with different functional specializations. The first antenna is dedicated to magnetic resonance operations (NFC, A4WP) while the second antenna handles WPC, PMA, and MST functions. This segmentation allows each antenna to be optimized for its specific frequency range and function without interference from additional patterns needed for other functions.
Solution Approach 2:
Different regions of the antenna unit are designed with locally optimized characteristics. The first antenna is positioned and configured specifically for magnetic resonance frequencies with appropriate inductance values, while the second antenna is optimized for WPC/PMA/MST frequencies. Each antenna's physical configuration, inductance, and positioning are locally tailored to its specific function, preventing performance degradation when multiple functions are integrated.
3Volume of moving object
If the antenna unit is miniaturized, then the device size is reduced, but the wireless power transmission range and efficiency may be compromised
Solution Approach 1:
The antenna design employs a nested configuration where the second antenna is positioned within or adjacent to the first antenna's structure. The first antenna has a larger area to support magnetic resonance operations, while the second antenna is integrated into the same spatial footprint. This nesting allows multiple antenna functions to coexist in a compact form factor without requiring proportional increases in overall device size.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement to pack multiple antenna functions into a compact volume. Rather than simply reducing two-dimensional area, the antenna unit employs vertical stacking, overlapping patterns, and multi-layer configurations to achieve miniaturization while preserving the effective radiating area and transmission range of each antenna function.
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 improves the range, efficiency, and performance of wireless power transmission and communication by allowing the combo antenna module to switch between modes, effectively extending the range of magnetic resonance without adding separate antennas, thus miniaturizing the module and enhancing user convenience.
Implementation Method 1
the A4WPC antenna performs the wireless power transmission in a magnetic resonance manner transmitting energy by coupling coils having the same resonance frequency with each other
Implementation Method 2
The WPC and PMA antennas perform the wireless power transmission in a magnetic induction manner inducing a current from one coil to another coil via a magnetic field
Data Source
AI summary
Provided are a combination antenna module and a portable electronic device including the same. There is provided a combo antenna module that includes an antenna unit including and a switching unit. The antenna unit includes a circuit board, a first wireless power transmission antenna, and a second wireless power transmission antenna of which manner is different from that of the first wireless power transmission antenna. The switching unit includes a first capacitor and a second capacitor connected in parallel to the second wireless power transmission antenna, and a switch, disposed between the first capacitor and the second capacitor, to be opened or closed based on an operation mode of the antenna unit. The second antenna and the second capacitor form a closed loop which is coupled with the first antenna when the switch is opened.