All-Metal Casing Antenna Structure for Compact Wireless Devices

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Solution Overview

Problem

As wireless communication technology advances, integrating diverse signal transceiver circuits into electronic devices poses a challenge in accommodating antennas within the increasingly compact and thin device designs, affecting wireless communication quality.

Innovation Solution

An all-metal casing structure incorporating a casing unit, substrate units, an antenna module, and conductive elements, where the antenna module is electrically connected to substrate bodies and conductive elements, enhancing antenna efficiency by utilizing the metal casing's structure and shielding elements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the volume of the electronic device is reduced to achieve short, small, light, and thin design, then the device portability is improved, but the space available for antenna integration is reduced

Engineering Contradiction:
Improvedevice volumeVSAvoidantenna integration capability
Core Design Contradiction:
Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The patent combines multiple antenna functions into a single integrated antenna structure that utilizes the metal casing itself as part of the antenna system. The first and second metal casings are pivotally connected and together form an antenna structure with through openings that serve as antenna elements, eliminating the need for separate antenna components and enabling full-function wireless communication in compact devices.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The metal casing serves dual functions: providing structural protection for the device and acting as an antenna structure for wireless communication. The through openings in the metal casings serve both as structural features and as antenna elements for signal transmission and reception, allowing a single component to fulfill multiple roles and reducing overall device volume.

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

2Adaptability or versatility

If multiple signal transceiver circuits are integrated into the electronic device, then the device functionality is improved, but the complexity of antenna integration is increased

Engineering Contradiction:
Improvewireless communication functionVSAvoidantenna integration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The antenna structure is segmented into multiple functional parts: the first metal casing with its through openings, the second metal casing pivotally connected, the substrate unit with circuit board, and the conductive unit with conductive elements. Each segment serves a specific function in the antenna system, allowing for modular integration that simplifies the overall design while supporting multiple wireless communication functions.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The substrate unit acts as an intermediary component that connects the antenna elements (metal casings with through openings) to the signal transceiver circuits. The conductive unit with conductive elements serves as another intermediary, providing electrical connection between the metal casing and the substrate. These intermediary components facilitate the integration of multiple signal transceiver circuits without increasing overall system complexity.

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 increases antenna efficiency by effectively integrating antenna functions within the metal casing structure, addressing the challenge of compact device design while maintaining communication quality.

Implementation Method 1

The conductive unit includes at least two conductive elements separated from each other by a predetermined distance and electrically connected between the at least one first metal casing and the at least one first substrate body

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

the at least one through opening is formed on the first front lateral portion of the at least one first metal casing and enclosed by a shielding element

Methodology Applied
Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentUS8902110B2All-metal casing structure and antenna structure
Publication Date: 2014.12.02 RRT TECH LTD
  • US8902110B2 patent drawing
  • US8902110B2 patent drawing
  • US8902110B2 patent drawing

AI summary

An all-metal casing structure includes a casing unit, a first substrate unit, a second substrate unit, an antenna unit and a conductive unit. The casing unit includes at least one metal casing having at least one through opening. The first substrate unit includes at least one first substrate body disposed in the metal casing and neighboring to the through opening. The second substrate unit includes at least one second substrate body disposed in the metal casing and neighboring to the first substrate body. The antenna unit includes at least one antenna module disposed on the first substrate body and corresponding to the through opening, and the antenna module is electrically connected to the second substrate body. The conductive unit includes at least two conductive elements separated from each other by a predetermined distance and electrically connected between the metal casing and the first substrate body.