Segmented Housing Antenna for Multi-Band Wireless Devices

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Solution Overview

Problem

Conventional electronic devices face challenges in mounting multiple antennas due to space limitations, leading to communication performance degradation and increased specific absorption rate (SAR) due to electromagnetic interference and user interaction.

Innovation Solution

The use of conductive patterns separated by nonconductive members to form multiple antennas within the electronic device's housing, allowing for switching between frequency bands and reducing interference through strategic grounding and feeding configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple antennas are mounted in a limited space, then multi-band communication capability is improved, but communication performance deteriorates due to mutual interference

Engineering Contradiction:

Improvemulti-band communication capabilityVSAvoidcommunication performance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The conductive member is divided into multiple conductive patterns (first conductive pattern, second conductive pattern, third conductive pattern) separated by nonconductive members. Each conductive pattern functions as an independent antenna element, enabling multi-band communication while reducing mutual interference through physical segmentation and electrical isolation.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If multiple antennas are mounted in a limited space, then multi-band communication capability is improved, but mounting space requirements increase

Engineering Contradiction:

Improvemulti-band communication capabilityVSAvoidmounting space

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

Multiple antenna functions are integrated into a single conductive member structure. The first, second, and third conductive patterns are formed on the same conductive member, allowing multiple antennas to share common mounting space while maintaining independent electrical paths through nonconductive separators.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The conductive member serves multiple functions: it provides structural support for the antenna system, acts as the radiator element for multiple frequency bands, and enables both single-band and multi-band operation modes through its segmented conductive patterns.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If antenna is positioned near user for calling, then communication performance is improved, but specific absorption rate (SAR) increases due to electromagnetic wave generation

Engineering Contradiction:

Improvecommunication performanceVSAvoidspecific absorption rate (SAR)

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The antenna system is segmented into multiple conductive patterns that can be independently controlled. This allows the device to use only the necessary antenna elements for current communication needs, reducing overall electromagnetic radiation and SAR when the device is held near the user.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The antenna system dynamically switches between different conductive patterns based on communication requirements. The switching mechanism enables the system to activate only the minimal necessary radiation elements, adapting the electromagnetic field distribution to reduce SAR while maintaining communication performance.

Inventive Principle:

Principle #15Dynamics

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 solution enables efficient multi-band communication, reduces SAR, and maintains communication performance even when the device is gripped or held near the user, by optimizing antenna design and switching mechanisms.

Implementation Method 1

first to third nonconductive members separating the conductive member

Methodology Applied

Scientific EffectElectromagnetic isolation: Electromagnetic Induction

Implementation Method 2

antenna for wireless communication

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS11728563B2Antenna for wireless communication and electronic device including the same

Publication Date: 2023.08.15 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic device is provided, which includes a housing; a conductive member forming at least a part of the housing; first to third nonconductive members separating the conductive member, wherein the conductive member includes a first conductive pattern disposed between the first nonconductive member and the second nonconductive member, and a second conductive pattern disposed between the second nonconductive member and the third nonconductive member; a first feeding part connected to the first conductive pattern; a second feeding part connected to the second conductive pattern; a first ground part connected to the first conductive pattern at a point adjacent to the second nonconductive member; and a communication circuit electrically connected with the conductive member.