Laser Etched Antenna Substrate Tuning
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Solution Overview
Problem
Antenna structures often require last-minute adjustments due to changes in fabrication geometry or material properties, leading to mismatch loss and compromised radiation performance, especially when multi-band antenna band edges fail to meet expected radiation performance, causing delays in shipping deadlines.
Innovation Solution
The use of laser etching to control the intrinsic properties of a substrate material, such as dielectric constant, by varying operating parameters like power, frequency, or distance, allowing for precise tuning of antenna structures to achieve desired electrical characteristics, including resonant frequency, without the need for extensive redesign and production of new parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antenna fabrication geometry or material properties are changed to improve performance, then radiation performance can be enhanced, but manufacturing time and cost increase due to redesign and production of new parts
Solution Approach 1:
The patent applies parameter changes by modifying the dielectric constant of the substrate material through laser etching. By controlling laser parameters (power, speed, pattern) during etching, the substrate's electromagnetic properties are altered to tune the antenna's resonant frequency and radiation characteristics. This allows performance optimization without redesigning the antenna geometry or producing new parts, thus resolving the contradiction between improved radiation performance and reduced manufacturing time.
2Reliability
If antenna fabrication geometry or material properties are changed to improve performance, then radiation performance can be enhanced, but production cost increases due to redesign and production of hundreds of thousands of new parts
Solution Approach 1:
The patent modifies the substrate material's dielectric constant through laser etching to tune antenna performance. This approach changes the electromagnetic properties of the substrate without requiring physical redesign or replacement of antenna components. The laser etching process can be applied to existing substrates, avoiding the need to produce hundreds of thousands of new parts, thereby significantly reducing production costs while achieving the desired radiation performance enhancement.
3Reliability
If material or antenna structural change is made to fix performance issues, then radiation performance can be improved, but shipping deadlines are compromised
Solution Approach 1:
The patent replaces mechanical/physical modification methods (redesign, retooling, remanufacturing) with a laser-based field processing approach. By using laser etching to modify the substrate's dielectric constant, the antenna can be tuned on existing production lines without stopping for redesign or replacement of components. This substitution of physical restructuring with field-based modification enables performance correction while maintaining production schedules and meeting shipping deadlines.
4Manufacturing precision
If laser etching is used to change substrate intrinsic properties for precise antenna tuning, then manufacturing flexibility and tuning accuracy are improved, but process complexity increases
Solution Approach 1:
The patent achieves precise antenna tuning by controlling laser etching parameters (power, speed, pattern, duration) to modify the substrate's dielectric constant. While the process involves multiple controllable parameters, the laser etching technique integrates into existing manufacturing workflows and eliminates the need for complex redesign cycles or multiple tooling changes. The precision gained in antenna tuning outweighs the moderate increase in process complexity, as the same laser system can be used for both substrate processing and antenna fabrication.
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 method enables accurate tuning of antenna structures, providing designers with more freedom and certainty that the antennas will operate as intended, while avoiding the need for large-scale redesign and production, thus ensuring timely delivery and maintaining radiation performance.
Implementation Method 1
a first area of the substrate material is laser etched to change an intrinsic property of the substrate material
Data Source
AI summary
Methods and systems for laser etching substrates to fine tune antennas for wireless communication are provided. A method includes laser etching an antenna element design into a substrate material. The antenna element design is for receiving conductive material to form an antenna structure. The method also includes laser etching a first area of the substrate material to change an intrinsic property of the substrate material in order to control an electrical characteristic of the antenna structure.