Equalizer for Wireless Electromagnetic Field Coupling Bandwidth

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Solution Overview

Problem

Current short-range wireless communication systems using electromagnetic field coupling face limitations in achieving high-speed data transmission due to restricted frequency bandwidth, which results in inefficient data transfer and increased costs and power consumption.

Innovation Solution

Incorporating an equalizer in the wireless communication system that performs equalization on transmit signals to counteract the transmission characteristic of the couplers, allowing for electromagnetic field coupling between modules, thereby expanding the frequency bandwidth and maintaining constant gain across a wide range, enabling efficient high-speed data transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If electromagnetic field coupling is used for wireless communication, then wired connection can be replaced and device manufacturing can be simplified, but communication speed is limited due to restricted frequency bandwidth

Engineering Contradiction:
Improvedevice manufacturing simplificationVSAvoidcommunication speed
Core Design Contradiction:
Ease of manufactureVSSpeed

Solution Approach 1:

The patent applies parameter changes by introducing an equalizer that modifies the frequency response characteristics of the transmission path. The equalizer adjusts equalization coefficients to compensate for frequency-dependent attenuation and distortion, thereby expanding the usable frequency bandwidth and enabling higher communication speeds while maintaining the simplicity of electromagnetic field coupling architecture

Inventive Principle:
Principle #35Parameter changes

2Productivity

If high-speed wireless communication is achieved by expanding frequency bandwidth, then data transmission efficiency improves, but system complexity increases due to need for equalization processing

Engineering Contradiction:
Improvedata transmission efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements feedback mechanisms where the equalizer continuously monitors the received signal quality and adjusts equalization coefficients accordingly. This adaptive feedback approach allows the system to maintain high data transmission efficiency while managing complexity through intelligent control rather than purely hardware-based solutions

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces complex hardware-based bandwidth expansion mechanisms with signal processing-based equalization. By using digital or analog equalization circuits that process signals electronically, the system achieves wideband performance without the mechanical or structural complexity that would otherwise be required

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Speed

If wider frequency bandwidth is used for transmission, then data transmission speed increases, but power consumption and operational costs increase

Engineering Contradiction:
Improvedata transmission speedVSAvoidpower consumption
Core Design Contradiction:
SpeedVSUse of energy by moving object

Solution Approach 1:

The patent applies partial action by using equalization to selectively enhance only the frequency components that are most beneficial for data transmission. Rather than uniformly amplifying all frequencies, the equalizer applies frequency-dependent gain adjustments, thereby achieving high data speeds while minimizing unnecessary power consumption in less critical frequency bands

Inventive Principle:
Principle #16Partial or excessive action

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 equalizer enhances the frequency bandwidth, allowing for increased data transmission speeds and efficiency, reducing the operational frequency requirements of components and minimizing costs and power consumption.

Implementation Method 1

a first coupler configured to wirelessly transmit a signal and a second coupler configured to wirelessly receive a signal by being coupled to the first coupler by at least one of electric-field coupling or magnetic-field coupling

Methodology Applied
Scientific EffectElectromagnetic field coupling: Electromagnetic Induction

Data Source

PatentUS12199800B2Wireless communication system and operating method of wireless communication system
Publication Date: 2025.01.14 CANON KK
  • US12199800B2 patent drawing
  • US12199800B2 patent drawing
  • US12199800B2 patent drawing

AI summary

A wireless communication system includes a first communication device and a second communication device. The first communication device includes a modulator configured to provide modulation and a first coupler configured to wirelessly transmit a signal. The second communication device includes a second coupler configured to wirelessly receive a signal by being coupled to the first coupler by at least one of electric-field coupling or magnetic-field coupling and a demodulator configured to provide demodulation. The first communication device or the second communication device includes an equalizer configured to provide equalization.