Composite Antenna Structure With Laser-Modified Covering Layer

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Solution Overview

Problem

Traditional chip antenna manufacturing methods face precision issues due to the three-dimensional structure of ceramic bodies, leading to disconnected transmission lines and increased manufacturing time, especially on corners and multiple surfaces.

Innovation Solution

A composite antenna structure with a dielectric main body and a covering layer, where the metallic transmission line is formed using laser technology or precise molding methods, improving precision and allowing for smaller antenna sizes while enhancing electrical properties and anti-vibration reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the traditional printing method is used to form transmission lines on ceramic body, then the manufacturing process is simple, but the transmission line precision is poor and disconnected issues occur especially on corners

Engineering Contradiction:

Improvetransmission line precisionVSAvoidmanufacturing process complexity

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent replaces the traditional mechanical printing method with a molding process where the transmission line structure is formed as an integrated part of the ceramic body during sintering. This substitution eliminates the precision problems of printing while maintaining manufacturing simplicity through a single-step forming process.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The transmission line structure is merged with the ceramic body as a single integrated component rather than being applied separately. The grooves and ridges are formed directly during ceramic sintering, combining the transmission line formation with the substrate manufacturing process to achieve both precision and ease of manufacture.

Inventive Principle:

Principle #5Merging (Combining)

2Productivity

If operators rotate the ceramic body to print transmission lines on multi surfaces, then all surfaces can be covered, but the manufacturing procedure takes much time and alignment is difficult

Engineering Contradiction:

Improvemanufacturing efficiencyVSAvoidalignment precision

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent divides the ceramic body into multiple surfaces with integrated transmission line structures formed during sintering. By creating grooves and ridges that extend across different surfaces as part of the monolithic ceramic structure, the need for rotation and alignment is eliminated while maintaining complete surface coverage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The transmission line structures on multiple surfaces are prepared in advance as an integrated part of the ceramic body during the sintering process. This preliminary formation of all transmission lines simultaneously eliminates the need for subsequent rotation and alignment operations, improving both productivity and precision.

Inventive Principle:

Principle #10Preliminary action

3Volume of moving object

If the antenna size is shrunk to meet small size requirements, then the antenna fits better in compact devices, but the electrical properties deteriorate

Engineering Contradiction:

Improveantenna sizeVSAvoidelectrical properties

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The patent modifies specific local regions of the ceramic body by creating grooves and ridges that concentrate electromagnetic energy in particular areas. This local structural modification allows the antenna to maintain excellent electrical properties even when the overall size is reduced, as the energy distribution is optimized in critical regions.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent uses the composite structure of ceramic material with integrated grooves and ridges to achieve both small size and good electrical properties. The ceramic body provides mechanical support and electrical insulation, while the molded transmission line structures provide efficient signal transmission, creating a composite antenna system that overcomes the size-performance tradeoff.

Inventive Principle:

Principle #40Composite materials

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 results in higher manufacturing efficiency, improved radiation efficiency, reduced size, and increased reliability by enabling precise formation of complex patterns and reducing weight, addressing the precision and time issues of traditional methods.

Implementation Method 1

a covering layer disposed on the dielectric main body, the covering layer having a laser-modified area to expose the dielectric main body

Methodology Applied

Scientific EffectLaser ablation: Laser Ablation

Data Source

PatentUS8803740B2Composite antenna structure

Publication Date: 2014.08.12 INPAQ TECHNOLOGY CO LTD

AI summary

A composite antenna structure includes a dielectric main body, a covering layer and a metallic transmission line structure. The dielectric constant of the dielectric main body is ranged from 1 to 200. The covering layer is disposed on the dielectric main body and has a pattern area defined thereon. The metallic transmission line structure is formed on the pattern area of the covering layer.