Antenna Module with Slit and Connecting Members for Narrow Bezel Broadband

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Solution Overview

Problem

Mobile terminals face challenges in achieving broadband antenna characteristics due to the narrow bandwidth of planar inverted-F antennas and limited space, especially with the trend of reducing bezel size, which complicates the integration of multi-band operation antennas.

Innovation Solution

A mobile terminal antenna module is designed using a metallic member forming the external appearance as an antenna, with a conductive member connected to a feeding and grounding portion, and additional connecting members to form a slit between the feeding and grounding portions, along with variable switches for impedance matching, allowing for robust operation in narrow bezel designs and wider bandwidth frequencies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a planar inverted-F antenna is used, then the antenna structure is simple and easy to manufacture, but the bandwidth is narrow

Engineering Contradiction:
Improveantenna structure simplicityVSAvoidbandwidth
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The antenna is divided into multiple conductive members (first conductive member, second conductive member, third conductive member) that are arranged in a specific three-dimensional configuration. Each conductive member serves as a separate radiating element, allowing the antenna to achieve broadband characteristics through the combined effect of multiple segmented elements rather than relying on a single planar structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from a two-dimensional planar inverted-F antenna to a three-dimensional configuration by arranging conductive members in multiple layers and orientations. The first conductive member is disposed on a first surface, the second conductive member on a second surface, and the third conductive member connects them, creating a spatial structure that expands the antenna's electromagnetic radiation capabilities across multiple dimensions, thereby achieving broadband performance.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Shape

If the bezel size is reduced, then the terminal appearance is more compact and modern, but the antenna arrangement space becomes insufficient

Engineering Contradiction:
Improvebezel sizeVSAvoidantenna arrangement space
Core Design Contradiction:
ShapeVSArea of stationary object

Solution Approach 1:

The patent utilizes the third dimension (vertical depth) to arrange antenna elements by disposing conductive members on different surfaces and layers within the terminal body. This three-dimensional arrangement allows the antenna system to fit within the limited space created by narrow bezels while maintaining adequate radiation performance.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The conductive members serve dual functions: they form part of the terminal's external appearance structure and simultaneously function as antenna elements for wireless communication. This multi-functionality allows the antenna to be integrated into the terminal's structural components rather than requiring separate dedicated space.

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

3Adaptability or versatility

If multiple conductive members are used to achieve broadband characteristics, then the frequency coverage is improved, but the device complexity increases

Engineering Contradiction:
Improvefrequency coverageVSAvoidantenna structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines multiple conductive members into a single integrated antenna module where the first, second, and third conductive members work together as a unified broadband antenna system. The conductive members are electrically connected through feeding portions and grounding portions, merging their individual radiation capabilities into a coordinated broadband structure that achieves wide frequency coverage without requiring separate antenna systems for different bands.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The antenna module is designed to support multiple frequency bands and communication standards (LTE, WCDMA, CDMA2000, GSM) through a single multi-element structure. The conductive members are configured to simultaneously support different resonance frequencies, allowing the antenna to function as a universal broadband solution rather than requiring separate specialized antennas for each frequency band.

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

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

The solution enables a mobile terminal to achieve broadband characteristics and robust antenna performance even with a narrow bezel, effectively utilizing the metallic member for antenna functions and enhancing frequency coverage.

Implementation Method 1

Antenna as a device formed to transmit and receive wireless electromagnetic waves for wireless communication

Methodology Applied
Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

a first conductive member (131) connected to a feeding portion (137) and a grounding portion (138)

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentEP3029767B1Antenna module and mobile terminal using the same
Publication Date: 2019.10.16 LG ELECTRONICS INC
  • EP3029767B1 patent drawingFigure 1A
  • EP3029767B1 patent drawingFigure 1B~1C
  • EP3029767B1 patent drawingFigure 2A

AI summary

The present disclosure relates to an antenna module and a mobile terminal having the same, and the antenna module may include a first conductive member connected to a feeding portion and a grounding portion, a second conductive member disposed to be separated from the first conductive member, a first connecting member configured to connect the first conductive member to the second conductive member at a position adjacent to the feeding portion, and a second connecting member configured to connect the first conductive member to the second conductive member at a position adjacent to the grounding portion, wherein a slit is formed on the first conductive member, and the slit is formed between the feeding portion and the grounding portion. And the first connecting member connects the first conductive member to the second conductive member at a location between a portion connected to the feeding portion an end of the first conductive member, the second connecting member connects the first conductive member to the second conductive member at a location between a portion connected to the grounding portion an end of the first conductive member