Antenna Array Layout for Efficient Wireless Power Reception
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Solution Overview
Problem
Existing wireless power transfer technologies face inefficiencies in power reception due to inadequate discussion on the positioning of beacon transmission antennas, resulting in reduced power reception.
Innovation Solution
A power receiver apparatus with an antenna array configuration where first antennas for reception are positioned near the center and second antennas for transmission are positioned farther away, allowing efficient power signal reception and transmission, along with a control system to estimate and transmit power to the optimal antenna positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beacon transmission antenna position is not optimized, then device complexity is reduced, but power reception efficiency deteriorates
Solution Approach 1:
The patent applies local quality by differentiating the functional roles and spatial positions of different antenna elements. First antennas are positioned in a first region while second antennas are positioned in a second region that at least partially surrounds the first region. This spatial differentiation optimizes power reception efficiency by creating distinct functional zones within the antenna array without requiring complex positioning mechanisms.
2Productivity
If multiple antennas are used for power reception, then power reception efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the antenna array into distinct functional groups: first antennas positioned in a first region and second antennas positioned in a second region that at least partially surrounds the first region. This segmentation allows each antenna group to perform optimized functions, improving overall power reception efficiency while maintaining manageable system complexity through clear functional division.
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
Enhances power reception efficiency by focusing power transmission on the center of the antenna array, enabling high-power wireless charging without physical interfaces.
Implementation Method 1
an antenna unit including, on a first face, one or more first antennas that receive radio waves from an outside, and two or more second antennas that transmit the radio waves to the outside
Implementation Method 2
A rectenna in a device to be charged receives and rectifies microwave energy, and uses the microwave energy to charge a battery
Data Source
AI summary
A power receiver apparatus includes an antenna unit, a power reception circuit, a rectifier circuit, and a transmission circuit. The antenna unit includes, on a first face, one or more first antennas that receive radio waves from an outside, and two or more second antennas that transmit the radio waves to the outside. The power reception circuit is connected to the first antennas, and receives a power signal via the one or more first antennas. The rectifier circuit rectifies the power signal received by the power reception circuit. The transmission circuit is connected to the second antennas, and transmits a wireless signal via the second antennas. The first face of the antenna unit includes a first region, and a second region that is at least a portion of a region surrounding the first region, and the second antennas are present in the second region.