Meta-material Antenna for Underground Communication

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing underground communication systems rely on heavy antennas operating at low frequency bands, which are not suitable for efficient and safe data transmission in underground mining or tunnel environments, posing challenges for rescue operations and data communication.

Innovation Solution

A communication system comprising a surface layer and an underground layer with a meta-material antenna, unburied and buried transceiver stations, sensors, routers, and coordinators, enabling communication through high-frequency bands and facilitating data exchange between the underground and surface layers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If heavy antennas operating at low frequency bands are used for underground communication, then communication coverage is improved, but device weight and portability deteriorate

Engineering Contradiction:

Improvecommunication coverageVSAvoidantenna weight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The patent changes the operating frequency parameter from low frequency to high frequency (microwave band), which allows for significantly reduced antenna size and weight while maintaining communication functionality. The meta-material structure enables high-frequency operation with compact dimensions, resolving the contradiction between coverage and weight.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs meta-materials with composite structures (periodic arrangements of conductive elements on substrate) to achieve electromagnetic wave manipulation at high frequencies. This composite material approach enables compact antenna design that maintains effective communication coverage while dramatically reducing weight compared to traditional low-frequency antennas.

Inventive Principle:

Principle #40Composite materials

2Reliability

If traditional antennas are used for underground communication, then communication capability is achieved, but device size and complexity increase

Engineering Contradiction:

Improvecommunication capabilityVSAvoidantenna size

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

By transitioning to high-frequency operation, the patent reduces the physical dimensions of the antenna according to the inverse relationship between frequency and wavelength. The meta-material design further compresses the effective electrical length, achieving compact size while preserving communication capability.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces traditional mechanical antenna structures with meta-material based electromagnetic structures. The periodic conductive elements create effective electromagnetic properties that enable compact sizing without sacrificing communication performance, substituting conventional antenna mechanics with electromagnetic field manipulation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Volume of moving object

If low frequency band operation is used, then antenna size is reduced, but communication efficiency and data transmission speed deteriorate

Engineering Contradiction:

Improveantenna sizeVSAvoiddata transmission speed

Core Design Contradiction:

Volume of moving objectVSProductivity

Solution Approach 1:

The patent changes the frequency parameter to high frequency (microwave band), which directly increases data transmission capacity and speed according to Shannon-Hartley theorem. The compact antenna size is achieved through meta-material design rather than low-frequency operation, allowing simultaneous achievement of small size and high transmission speed.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If heavy antennas are deployed for underground communication, then communication range is improved, but ease of operation and portability deteriorate

Engineering Contradiction:

Improvecommunication rangeVSAvoidportability

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The high-frequency operation enables compact antenna design that is portable and easy to deploy in underground environments. The meta-material structure maintains effective communication range through enhanced directivity and efficiency at high frequencies, resolving the contradiction between range and portability.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10541759B2Underground communication system

Publication Date: 2020.01.21 INDIAN INSTITUTE OF TECHNOLOGY BOMBAY

AI summary

Embodiments herein provide a system for underground communication. The system includes a surface layer and an underground layer. The surface layer includes an unburied transceiver station connected to a base station. The underground layer includes a buried transceiver station connected to the unburied transceiver station. The underground layer includes an electronic device with a meta-material antenna and a transceiver in communication with the buried transceiver station. Further, the underground layer includes a coordinator in communication with a plurality of sensors nodes and a plurality of routers. The underground layer includes an unburied transceiver station in communication with the plurality of routers and meta-material antenna. The unburied transceiver station in underground layer communicates with the buried transceiver station. The communication is facilitated between the underground layer and base station in the surface layer through either a meta-material antenna or an unburied transceiver station in underground layer, by buried transceiver station.