Composite Antenna System for Multi-Band Wireless Devices

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Solution Overview

Problem

Existing electronic devices face challenges in securely implementing multiple communication bands within a limited antenna volume while maintaining performance and minimizing human body influence, especially when using metallic exteriors and internal antennas.

Innovation Solution

The design incorporates a composite antenna system with a conductive member and a conductive pattern, utilizing split portions of the metal bezel as antennas and strategically positioning them to ensure efficient spacing and minimize human body interference, allowing for multiple frequency bands to be operated without degrading performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple communication bands are implemented using separate antennas, then communication coverage is improved, but device volume increases

Engineering Contradiction:

Improvecommunication band coverageVSAvoidantenna volume

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The patent combines multiple antenna functions into a single integrated antenna structure that supports multiple communication bands (2G, 3G, 4G, Wi-Fi, Bluetooth) through frequency-selective surfaces and multiple radiating elements within one antenna unit, eliminating the need for separate antennas for each band

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The antenna is designed as a universal multi-functional component that can operate across multiple frequency bands and communication standards simultaneously, with adjustable elements that can be configured for different service types including voice, data, and wireless communications

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If antenna spacing is increased to minimize interference, then antenna performance is improved, but device width increases

Engineering Contradiction:

Improveantenna performanceVSAvoiddevice width

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The antenna structure is segmented into multiple independent radiating elements and frequency-selective surface sections that can be arranged in a compact configuration, allowing each segment to handle specific frequency ranges while maintaining overall compactness

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transitions from horizontal spacing between antennas to vertical stacking and three-dimensional arrangement of antenna elements, utilizing the Z-axis and layered structure to achieve isolation without increasing device width

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Shape

If metallic exterior is used for design, then aesthetic appearance is improved, but antenna performance degrades due to interference

Engineering Contradiction:

Improveaesthetic appearanceVSAvoidantenna performance

Core Design Contradiction:

ShapeVSReliability

Solution Approach 1:

The patent introduces frequency-selective surfaces as intermediary layers between the metallic exterior and antenna elements, allowing the metal to provide aesthetic appearance while the FSS layers selectively transmit or block electromagnetic waves to protect antenna performance

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The antenna structure uses composite construction combining metallic exterior materials with non-conductive FSS layers and dielectric materials, creating a multi-layer composite structure that simultaneously achieves aesthetic appearance and electromagnetic performance

Inventive Principle:

Principle #40Composite materials

4Length of moving object

If antenna length is reduced for compact design, then device slimness is improved, but antenna performance degrades due to human body influence

Engineering Contradiction:

Improveantenna lengthVSAvoidantenna performance

Core Design Contradiction:

Length of moving objectVSReliability

Solution Approach 1:

The patent employs nested antenna elements where shorter antennas are positioned within or near longer antenna structures, creating a protective configuration where the outer antenna shields the inner antenna from human body influence while maintaining compact overall length

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS10224608B2Antenna device and electronic device including the same

Publication Date: 2019.03.05 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic device is provided. The electronic device includes a housing including a first face, a second face, and a side face that at least partially encloses a space between the first face and the second face, a conductive member configured to form at least a portion of the side face, a ground member, at least one communication circuit, and a conductive pattern positioned within the housing, the conductive pattern electrically connected to the communication circuit and the ground member, a first electric path positioned within the housing, and configured to electrically interconnect another end of the conductive member and the communication circuit, a second electric path configured to electrically interconnect the first electric path or the conductive member and the ground member, and a third electric path configured to electrically interconnect the first electric path or the conductive member and the ground member, and including a switching circuit.