Electromagnetic Reflecting Structure for Passive Blind Spot Coverage

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Solution Overview

Problem

The deployment and maintenance of additional base stations or signal boosters to address communication blind spots and weak signal areas are costly, labor-intensive, and can cause psychological stress to residents, while existing solutions do not effectively mitigate these issues.

Innovation Solution

An electromagnetic wave reflecting structure with a substrate and multiple reflecting elements, designed to guide electromagnetic waves to specific reflection angles, is manufactured by calculating phase distributions and arranging elements based on incident and reflected wave angles, frequencies, and distances, allowing for cost-effective deployment and maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If additional base stations or signal boosters are deployed to address communication blind spots, then signal coverage is improved, but deployment cost and maintenance cost increase significantly

Engineering Contradiction:
Improvesignal coverageVSAvoiddeployment complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces a reflecting structure as an intermediary element between the base station and the communication blind spot. This reflecting structure redirects electromagnetic waves to reach areas that would otherwise be inaccessible, eliminating the need for additional base stations or signal boosters in those locations.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the mechanical approach of deploying additional active equipment (base stations or signal boosters) with a passive electromagnetic wave reflection system. The reflecting structure uses electromagnetic field interactions rather than active electronic components to extend signal coverage.

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

2Reliability

If additional base stations or signal boosters are deployed to address communication blind spots, then signal coverage is improved, but maintenance workload increases

Engineering Contradiction:
Improvesignal coverageVSAvoidmaintenance ease
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The reflecting structure is designed as a passive system that requires no power supply, no active maintenance, and no operational intervention. Once installed, it automatically performs its function of redirecting electromagnetic waves without requiring maintenance personnel or technical expertise.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent employs simple, inexpensive reflecting elements that can be easily manufactured and installed. These elements are designed to be low-cost substitutes for expensive, complex active equipment like base stations and signal boosters.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Reliability

If additional base stations are deployed to address communication blind spots, then signal coverage is improved, but power consumption increases

Engineering Contradiction:
Improvesignal coverageVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The reflecting structure operates passively without requiring any power supply. It utilizes the natural properties of electromagnetic wave reflection to extend signal coverage, eliminating the need for electrical power that would be required by active signal boosting equipment.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent converts the naturally occurring phenomenon of electromagnetic wave reflection, which would otherwise be a passive physical effect, into an active solution for extending signal coverage. By strategically positioning reflecting elements, the system harnesses this natural effect to achieve the desired outcome without energy input.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

4Manufacturing precision

If reflecting elements are designed with specific phase shifts to control wave reflection, then reflection precision is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvereflection phase precisionVSAvoidstructure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent divides the reflecting structure into multiple discrete reflecting elements, each contributing a specific phase shift to the overall reflection pattern. This segmentation allows for precise control of the reflected wavefront while maintaining simplicity in the design of individual elements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different reflecting elements are designed with different phase shift characteristics tailored to their specific positions in the array. This local optimization ensures that each element contributes appropriately to the overall beamforming pattern, achieving precise reflection control without requiring complex individual element designs.

Inventive Principle:
Principle #3Local quality

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 structure provides effective signal coverage without power consumption, reduces maintenance needs, and is compatible with building decor, while supporting broad bandwidth and directivity, effectively eliminating communication blind spots.

Implementation Method 1

the i-th reflecting element among the reflecting elements is related to a coordinate location of the i-th reflecting element with respect to the reference point, a wave number at the operating frequency, the reflected wave pointing angle, and an incident distance of the electromagnetic wave source to the i-th reflecting element

Methodology Applied
Scientific EffectElectromagnetic wave reflection: Reflection

Data Source

PatentUS12562497B2Electromagnetic wave reflecting structure and manufacturing method thereof
Publication Date: 2026.02.24 NATIONAL CHUNG CHENG UNIV
  • US12562497B2 patent drawing
  • US12562497B2 patent drawing
  • US12562497B2 patent drawing

AI summary

A method of manufacturing an electromagnetic wave reflecting structure includes the steps of presetting an operating frequency, a reflected wave pointing angle, an incident wave pointing angle, and an incident distance of an electromagnetic wave; obtaining an electromagnetic wave reflecting structure phase distribution of an electromagnetic wave reflecting structure according to the operating frequency, the reflected wave pointing angle, the incident wave pointing angle, and the incident distance; and arranging a plurality of reflecting elements on a substrate according to the electromagnetic wave reflecting structure phase distribution and a reflecting element phase curve of any one of the reflecting elements at the operating frequency.