Ring-Shaped Antenna Structure for Multi-Band Wireless Communication

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing antenna structures in wireless communication devices face challenges in efficiently covering multiple frequency bands while maintaining optimal radiation performance, particularly in multi-band communication systems, where the bandwidth needs to be wide enough to accommodate various frequency ranges.

Innovation Solution

The antenna structure incorporates a ring-shaped frame with multiple radiating portions and ground portions, along with clearance areas, to activate multiple resonance modes across different frequency bands, utilizing switch circuits and matching circuits to adjust frequency bands and improve isolation between antennas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the antenna uses a conventional monopole or inverted f-shaped structure, then the structure is simple and easy to manufacture, but the bandwidth is insufficient to cover multiple frequency bands effectively

Engineering Contradiction:

Improvebandwidth coverageVSAvoidantenna structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The antenna structure is divided into multiple radiating portions (first, second, third, and fourth radiating portions) arranged in a ring-shaped configuration. Each radiating portion can be independently fed and controlled, allowing different segments to operate at different frequency bands simultaneously, thereby achieving multi-band coverage through structural segmentation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The ring-shaped antenna structure serves multiple functions: it provides radiation for multiple frequency bands, creates clearance areas for improved performance, and integrates ground portions for proper grounding. The same structural elements (radiating portions, ground portions, clearance areas) work together to achieve both single-band and multi-band operation, making the antenna universally applicable across different frequency ranges.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If the antenna includes clearance areas to promote radiation performance, then the radiation performance is improved, but the metal chassis requires plastic areas which increases manufacturing complexity

Engineering Contradiction:

Improveradiation performanceVSAvoidchassis manufacturing complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The clearance areas of the antenna structure are merged with the plastic areas of the metal chassis, creating a unified design where the antenna's clearance requirements and the chassis's structural requirements are satisfied simultaneously. This integration allows the antenna to achieve optimal radiation performance while the chassis maintains its structural integrity without requiring separate or additional plastic components.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If multiple resonance modes are activated across different frequency bands, then the multi-band communication capability is enhanced, but the isolation between different antenna components becomes more difficult to maintain

Engineering Contradiction:

Improvemulti-band communication capabilityVSAvoidinterference between antenna components

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

Different portions of the ring-shaped antenna are designed with locally optimized characteristics. Each radiating portion and ground portion is positioned and dimensioned to optimize performance for specific frequency bands. The clearance areas are strategically placed to enhance radiation performance in specific directions and frequency ranges, allowing each local region to contribute to overall multi-band operation while minimizing interference through localized optimization.

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 allows for simultaneous activation of multiple resonance modes across various frequency bands, enhancing the antenna's ability to transmit and receive signals efficiently across multiple frequency bands, including LTE-A and GPS bands, while maintaining isolation between different antenna components.

Implementation Method 1

Methodology Applied

Scientific EffectResonance: Resonance

Data Source

PatentUS10530056B2Antenna structure and wireless communication device using same

Publication Date: 2020.01.07 CHIUN MAI COMM SYST INC

AI summary

An antenna structure includes a first feeding source, a second feeding source, and a ring-shaped frame. The ring-shaped frame defines a first radiating portion and a second radiating portion. A current signal flows from the first feeding source to the first radiating portion, the first radiating portion activates a first resonance mode and a second resonance mode simultaneously to generate radiation signals in a first frequency band and a second frequency band. A current signal flows from the second feeding source to the second radiating portion, the second radiating portion activates a third resonance mode and a fourth resonance mode simultaneously to generate radiation signals in a third frequency band and a fourth frequency band. A wireless communication device is also provided.