Coupling-Fed Antenna Structure for Compact Multi-Band Electronics

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The increasing demand for multiple frequency bands in electronic devices, such as smartphones and tablets, poses a challenge due to limited internal space, leading to potential interference between antennas and reduced radiation performance.

Innovation Solution

An electronic device design incorporating a housing with a first conductive member, a second conductive member, and a conductive connection member with an elastic portion, allowing for direct power feeding to a first frequency band and coupling-feeding to a second frequency band, thereby optimizing space efficiency and radiation performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple antennas are added to support multiple frequency bands, then communication capability is improved, but internal space is consumed and interference occurs

Engineering Contradiction:

Improvecommunication capabilityVSAvoidinternal space

Core Design Contradiction:

Adaptability or versatilityVSVolume of stationary object

Solution Approach 1:

The conductive connection member is designed to serve multiple functions: it acts as a direct feed for the first frequency band and as a coupling structure for the second frequency band. This multi-functionality allows a single component to support multiple communication bands without requiring separate antenna structures, thereby improving adaptability while conserving internal space.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the feeding structure for the first frequency band and the coupling structure for the second frequency band into a single conductive connection member. By merging these functions into one component, the design reduces the number of separate antenna elements needed, thus maintaining communication capability across multiple bands while minimizing space consumption and avoiding interference between separate antenna structures.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If antenna space is increased to avoid interference, then radiation performance is improved, but device size increases

Engineering Contradiction:

Improveradiation performanceVSAvoiddevice size

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent applies different structural characteristics to different parts of the conductive connection member: one portion is configured for direct electrical connection for the first frequency band, while another portion is spaced apart to create a coupling structure for the second frequency band. This local differentiation optimizes radiation performance for each frequency band without requiring the entire structure to be oversized, thus maintaining good radiation characteristics while keeping the device compact.

Inventive Principle:

Principle #3Local quality

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 enhances radiation efficiency, particularly in frequency bands above 3.3 GHz, by adjusting the area of the second conductive member, thus improving antenna performance without increasing device size.

Implementation Method 1

receive a signal of a first frequency band by directly feeding power to the first conductive member via the conductive connection member

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

receive a signal of a second frequency band higher than the first frequency band by coupling-feeding power to the second conductive member via the conductive connection member

Methodology Applied

Scientific EffectElectromagnetic coupling: Electromagnetic Induction

Data Source

PatentUS12051851B2Electronic device including antenna including coupling-feeding structure

Publication Date: 2024.07.30 SAMSUNG ELECTRONICS CO LTD

AI summary

According to various embodiments, an electronic device includes: a housing; a first conductive member comprising a conductive material corresponding to a portion of the housing; a second conductive member comprising a conductive material arranged inside the housing; a printed circuit board arranged inside the housing; a wireless communication circuit arranged on the printed circuit board; and a conductive connection member comprising a conductive material electrically connected to the wireless communication circuit. The conductive connection member includes an elastic portion and at least one of a first surface, a second surface, a third surface, and a fourth surface. The elastic portion of the conductive connection member is in contact with the first conductive member, and the at least one of the first surface, the second surface, the third surface, and the fourth surface of the conductive connection member is spaced apart, by a gap, from a portion of the second conductive member. The wireless communication circuit may be configured to: receive a signal in a first frequency band by directly feeding power to the first conductive member via the conductive connection member, and receive a signal in a second frequency band higher than the first frequency band by coupling-feeding power to the second conductive member via the conductive connection member.