Wireless Interface Antenna Segmentation for Power Efficiency
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Solution Overview
Problem
Electronic tickets require a trade-off between flexibility and power consumption, as more antennas provide flexibility but increase power usage, while fewer antennas reduce flexibility and power consumption.
Innovation Solution
A wireless communication interface with a substrate, active antennas, passive antennas, and a sensing driving circuit, where passive antennas resonate radio frequency signals from active antennas, allowing for flexible use while reducing power consumption by selectively turning on antennas based on proximity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If more antennas are used, then flexibility in use of electronic ticket is improved, but power consumption increases
Solution Approach 1:
The antenna system is segmented into active antennas and passive antennas. Active antennas are connected to power supply and can be selectively activated, while passive antennas are not connected to power supply and only activate when needed for sensing. This segmentation allows the system to have multiple antennas available for flexibility while only consuming power for the minimal number of active antennas needed at any given time.
Solution Approach 2:
The system dynamically switches between scan mode and transaction mode, and dynamically activates or deactivates antennas based on operational requirements. During scan mode, multiple passive antennas can be activated for comprehensive sensing; during transaction mode, only necessary active antennas remain powered. This dynamic operation allows the system to adapt antenna configuration to actual needs, maintaining flexibility while minimizing power consumption.
2Use of energy by moving object
If fewer antennas are used, then power consumption is reduced, but flexibility in use of electronic ticket decreases
Solution Approach 1:
Passive antennas serve as intermediaries between active antennas and the sensing target. They are not directly connected to power supply but can be activated by coupling with radio frequency signals from active antennas. This intermediary role allows passive antennas to extend the sensing coverage and flexibility of the system without requiring direct power connection, thus maintaining flexibility while minimizing power consumption.
Solution Approach 2:
The system changes the operational state of antennas based on mode requirements. Passive antennas can be switched between dormant state (not consuming power) and active state (coupled with RF signals). This parameter change allows the system to have a large number of antennas available for flexibility while keeping power consumption low by only activating necessary antennas during specific operations.
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 solution achieves flexible use of electronic tickets with reduced power consumption by using passive antennas to couple radio frequency signals, enhancing sensing effectiveness and minimizing power usage.
Implementation Method 1
a plurality of passive antennas B11-B16 disposed on the substrate SB and configured to resonate the radio frequency signal Srf of the adjacent active antennas A11-A16 in response to a control signal
Data Source
AI summary
A wireless communication interface and a driving method thereof are provided. The wireless communication interface includes a substrate, a plurality of active antennas, a plurality of passive antennas, and a sensing driving circuit. The active antennas are disposed on the substrate for receiving a radio frequency signal. The passive antennas are disposed on the substrate for resonating the RF signals of the adjacent active antennas in response to a control signal. The sensing driving circuit is coupled to the active antennas and the passive antennas for providing the radio frequency signal and the control signal.