Loop-Shaped Antenna in Wearable Electronic Device

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Solution Overview

Problem

The challenge lies in creating a compact, wearable electronic device that balances reduced size and weight with efficient performance, including effective antenna arrangement and heat management, while maintaining user comfort and functionality.

Innovation Solution

The design features a ring-shaped main body made of conductive material with a curved loop shape, incorporating a communication module, battery, and sensors, along with a flexible printed circuit board and insulator layer, which allows for wireless communication and improved heat radiation through metal fins and air flow routes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If the size and weight of the electronic device are reduced to make it wearable, then the device can be worn on the body with convenient feeling, but the functions are limited and the antenna arrangement becomes more constrained

Engineering Contradiction:
Improveweight of electronic deviceVSAvoidantenna arrangement flexibility
Core Design Contradiction:
Weight of moving objectVSAdaptability or versatility

Solution Approach 1:

The patent transitions the antenna from a planar two-dimensional structure to a three-dimensional loop-shaped structure that extends in multiple spatial dimensions. The loop antenna is configured with vertical and horizontal segments that occupy different spatial planes, enabling effective wireless communication while fitting within the constrained volume of a wearable device.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The loop-shaped antenna is integrated within the housing structure of the wearable device, with the antenna loop nested around or within the same body housing that contains other electronic components. This nesting approach allows the antenna to utilize the device's three-dimensional form factor efficiently without adding external bulk.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Volume of moving object

If the size of the electronic device is reduced, then the device can be made wearable, but the internal space for arranging components becomes limited

Engineering Contradiction:
Improvevolume of electronic deviceVSAvoidcomponent arrangement complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The patent combines multiple functional components within the same housing structure. The loop antenna is integrated with the housing body, and other components such as the battery, processor, and sensors are arranged within the same compact volume. This merging of functions into a unified structure reduces overall device volume while managing component complexity through integrated design.

Inventive Principle:
Principle #5Merging (Combining)

3Volume of moving object

If the device is made compact for wearable use, then portability is improved, but heat generation from internal components becomes more problematic

Engineering Contradiction:
Improvevolume of electronic deviceVSAvoidheat transfer to body
Core Design Contradiction:
Volume of moving objectVSTemperature

Solution Approach 1:

The patent extracts heat-generating components such as the battery and processor from direct contact with the user's body by positioning them in specific locations within the housing. The loop antenna structure is configured to create thermal separation zones, and insulating materials are placed between components and the housing surface that contacts the body, effectively extracting the heat transfer path from the user.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces thermal management intermediaries including insulating layers and heat dissipation structures positioned between the internal components and the user's body. These intermediary elements manage heat flow by conducting heat away from sensitive areas or providing thermal insulation to prevent excessive heat transfer to the user.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 configuration enables efficient use of internal space, facilitates wireless communication, stabilizes device operation, and enhances user comfort by reducing heat transfer and improving heat radiation performance.

Implementation Method 1

a main body that is made of a conductive material and has opposite ends extending in a curved form to be adjacent to each other so as to form a loop shape... The main body may receive a feeding signal from the communication module through the feeding line, and may transmit/receive a wireless signal.

Methodology Applied
Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

improved heat radiation through metal fins and air flow routes... enhances user comfort by reducing heat transfer and improving heat radiation performance

Methodology Applied
Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 3

improved heat radiation through metal fins and air flow routes

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentUS10559874B2Electronic device including loop-shaped antenna
Publication Date: 2020.02.11 SAMSUNG ELECTRONICS CO LTD
  • US10559874B2 patent drawing
  • US10559874B2 patent drawing
  • US10559874B2 patent drawing

AI summary

An electronic device according to various embodiments of the present invention may comprise: a body which is made of a conductive material and has both ends curvedly extending to be adjacent to each other so as to have a loop shape; a communication module arranged on the body; a feeding line which extends from the communication module and is arranged to cross a gap between both ends of the body; and at least one connection terminal for connecting the feeding line to the body, wherein the body can receive a feeding signal from the communication module through the feeding line, and transmit/receive a wireless signal. The above-mentioned electronic device can be implemented variously according to embodiments.