Thermoelectric Wireless Communication Between Chip Devices

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Solution Overview

Problem

Current methods for wireless communication between devices within the same electronic chip, such as radiofrequency transmission, are expensive due to the need for radiofrequency antennas within the chip.

Innovation Solution

The use of thermoelectric generators, where one device generates a thermal gradient based on a signal using the Peltier effect and another device generates an electrical signal using the Seebeck effect, allowing for wireless communication between thermally coupled thermoelectric generators without the need for additional antennas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If radiofrequency transmission is used for wireless communication between devices within the same chip, then wireless communication capability is achieved, but manufacturing cost increases due to the need for radiofrequency antennas

Engineering Contradiction:
Improvewireless communication capabilityVSAvoidmanufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent replaces the radiofrequency electromagnetic system with a thermal field system using thermoelectric generators. Instead of using radiofrequency antennas and electromagnetic waves for communication, the invention uses thermally coupled thermoelectric generators that convert electrical signals to thermal gradients and back, thereby substituting a complex RF system with a simpler thermal-based system that leverages existing chip infrastructure.

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

Solution Approach 2:

The patent introduces thermal coupling as an intermediary mechanism between the transmitting and receiving devices. The thermal field acts as a mediator that transfers information between the two thermoelectric generators without requiring direct electrical connection or radiofrequency antennas, thus enabling wireless communication through a thermal intermediary that is already present in the chip structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If radiofrequency antennas are introduced into the chip for wireless communication, then communication function is enabled, but device complexity increases

Engineering Contradiction:
Improvewireless communication functionVSAvoidchip structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent makes the thermoelectric generators serve multiple functions: they act as both transmitters and receivers, convert between electrical and thermal energy, and enable wireless communication. This multi-functionality eliminates the need for separate RF antennas, signal processing circuits, and power management components, thereby reducing overall device complexity while maintaining wireless communication capability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent substitutes the complex radiofrequency system (including antennas, impedance matching networks, and RF amplifiers) with a simpler thermal-based system using thermoelectric generators. The thermal field system requires fewer components and can be integrated more easily into existing chip architectures, thereby reducing device complexity.

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

3Ease of manufacture

If thermoelectric generators are used for wireless communication, then manufacturing cost is reduced by eliminating antennas, but thermal coupling efficiency must be optimized

Engineering Contradiction:
Improvemanufacturing costVSAvoidthermal coupling efficiency
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent optimizes thermal coupling efficiency by changing physical parameters such as the thermal conductivity of the coupling medium, the geometry and spacing of the thermoelectric generators, and the operating temperature ranges. These parameter adjustments ensure reliable thermal coupling between generators while maintaining cost-effectiveness and eliminating the need for expensive RF antennas.

Inventive Principle:
Principle #35Parameter changes

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

This method enables cost-effective wireless communication between devices within the same chip by leveraging existing microelectronics technologies and fabrication methods, facilitating the transmission of logic information cues without the expense of radiofrequency antennas.

Implementation Method 1

a first signal is generated within the first device and the first thermoelectric generator is electrically powered as a function of the first signal so as to generate a first thermal gradient in the first generator

Methodology Applied
Scientific EffectPeltier effect: Peltier Effect

Implementation Method 2

a second thermal gradient in the second generator and generating a second signal generated within the second device on the basis of the electrical energy produced by the second thermoelectric generator in response to the second thermal gradient

Methodology Applied
Scientific EffectSeebeck effect: Seebeck Effect

Data Source

PatentUS10388695B2Method of wireless communication between two devices, especially within one and the same integrated circuit, and corresponding system
Publication Date: 2019.08.20 STMICROELECTRONICS (ROUSSET) SAS
  • US10388695B2 patent drawing
  • US10388695B2 patent drawing
  • US10388695B2 patent drawing

AI summary

Method of wireless communication between a first device and a second device, in which, the first device and the second device comprising respectively a first thermoelectric generator and a second thermoelectric generator, the two thermoelectric generators being in thermal coupling, a first signal is generated within the first device, the first thermoelectric generator is electrically powered as a function of the first signal so as to create a first thermal gradient in the said first generator and a second thermal gradient in the second generator, and a second signal is generated within the second device on the basis of the electrical energy produced by the second thermoelectric generator in response to the said second thermal gradient.