Middle Frame Antenna Assembly for Thinner Electronic Devices

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Solution Overview

Problem

Existing electronic devices face challenges in efficiently integrating antenna radiators within their frames, leading to potential increases in device thickness and complexity due to the need for separate antenna arrangements and limited space for other components.

Innovation Solution

The antenna radiator is integrated with the middle frame assembly, forming a continuous and integral structure using a metal substrate, such as magnesium alloy, allowing for a stronger and more compact design by positioning the antenna at the fringe of the frame, which can include escape slots or holes to accommodate other functional components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the antenna radiator is separately arranged within the frame, then the antenna can transmit signals effectively, but the device thickness increases and the structure becomes more complex

Engineering Contradiction:

Improvesignal transmission capabilityVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The antenna radiator is integrated with the middle frame assembly to form a unified structure. The frame body serves as both the structural support and the antenna radiator, eliminating the need for separate antenna components while maintaining signal transmission functionality. This merging reduces structural complexity and achieves a more compact design.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If the antenna radiator is separately arranged within the frame, then the antenna can transmit signals effectively, but the device thickness increases

Engineering Contradiction:

Improvesignal transmission capabilityVSAvoiddevice thickness

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

3Strength

If the antenna radiator is integrated with the middle frame assembly, then the structural strength is enhanced and thickness is reduced, but the antenna arrangement becomes more constrained

Engineering Contradiction:

Improvestructural strengthVSAvoidantenna arrangement flexibility

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The middle frame assembly is designed to serve multiple functions: it provides structural support, acts as the antenna radiator for signal transmission, and offers space for accommodating other functional components through escape slots or holes. This multi-functionality allows the same structure to fulfill various roles without requiring separate dedicated components, thereby maintaining adaptability while achieving integration.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP3483982B1Middle frame assembly and electronic device

Publication Date: 2023.11.01 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

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AI summary

The present disclosure provides a middle frame assembly and an electronic device. The middle frame assembly includes a middle frame (12) and an antenna radiator (20). The middle frame (12) includes a metal substrate (121). The antenna radiator (20) is disposed at a fringe of the metal substrate (121). The antenna radiator (20) defines an escape space (29) through the antenna radiator (20) and configured to receive a functional component (60). According to the present disclosure, the antenna radiator (20) may be disposed at the fringe of the middle frame (12) such that the middle frame assembly may be a continuous and integral structure.