Short answer
When designing 3D metallic antennas for wireless power telemetry, consider CNC milling for superior gain and bandwidth performance over additive manufacturing.
- Field
- Modelling
- Source
- IEEE Open Journal of Antennas and Propagation (2023)
- Method
- Comparative experimental analysis
- Evidence
- Strong effect
Additive manufacturing and CNC milling offer distinct advantages in fabricating 3D Vivaldi antennas, with CNC milling yielding higher gain and bandwidth. This modelling research insight is drawn from a 2023 study published in IEEE Open Journal of Antennas and Propagation. Using Comparative experimental analysis, researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing 3D metallic antennas for wireless power telemetry, consider CNC milling for superior gain and bandwidth performance over additive manufacturing.
3D Vivaldi Antenna Performance Boosted by Additive Manufacturing vs. CNC Milling
Additive manufacturing and CNC milling offer distinct advantages in fabricating 3D Vivaldi antennas, with CNC milling yielding higher gain and bandwidth.
IEEE Open Journal of Antennas and Propagation · 2023
Key Findings
- 01The CNC milled antenna achieved a higher measured gain of 5.70 dBi compared to the AM antenna's 4.95 dBi.
- 02The CNC milled antenna exhibited a wider measured bandwidth of 4.95 GHz (56.73% FBW) compared to the AM antenna's 4.70 GHz (52.86% FBW).
- 03The CNC milled version was found to be 1.2x more effective in terms of realized gain than the AM version.
Application
Design takeaway
When designing 3D metallic antennas for wireless power telemetry, consider CNC milling for superior gain and bandwidth performance over additive manufacturing.
How to apply
When specifying manufacturing for a high-performance antenna project, conduct a comparative analysis of AM and CNC milling based on required gain, bandwidth, and geometric complexity.
Project actions
- 01Clearly define the performance metrics (gain, bandwidth) that are critical for your antenna design.
- 02Investigate the capabilities and limitations of different manufacturing techniques relevant to your project's materials and complexity.
Method & Evidence
Variables
Strengths & Limitations
Strengths
- +Direct comparison of two common advanced manufacturing techniques.
- +Focus on a practical application (wireless power telemetry).
Limitations
The study did not explore the cost-effectiveness or lead times associated with each manufacturing method.
Reliability & validity
The study's validity is supported by experimental measurements of gain and bandwidth. Reliability would depend on the consistency of the manufacturing processes and the accuracy of the measurement equipment.
Think critically
Beyond gain and bandwidth, what other performance characteristics of an antenna might be differentially affected by additive manufacturing versus CNC milling, and how would these impact the overall system design?
Design Principles
"Manufacturing process selection directly influences the electromagnetic performance characteristics of complex antenna designs."
The choice of manufacturing technique significantly impacts the performance of complex metallic structures like 3D Vivaldi antennas. Understanding these differences allows designers to select the optimal fabrication method to meet specific performance targets for applications such as wireless power telemetry.
What This Means for Your Design
When making a 3D antenna, using a CNC machine to carve it out of metal works better for signal strength and range than building it up layer by layer with a 3D printer.
How to use in your project
- 1.Reference this study when discussing the impact of manufacturing choices on the performance of your prototype antenna.
Add to My Project
Quick Cite
Paragraph starter
The fabrication method significantly influences antenna performance, as demonstrated by a study comparing additive manufacturing (AM) and CNC milling for 3D Vivaldi antennas. The CNC-milled version exhibited superior gain and bandwidth, highlighting the importance of selecting the appropriate manufacturing technique to meet specific performance requirements for wireless power telemetry applications.
Source
IEEE Open Journal of Antennas and Propagation
A Slot-Connected Cavity Design With Corresponding Equivalent Circuit Model Analysis for Fully Metallic 3-D Vivaldi Antenna for Wireless Power Telemetry Applications
journal · 2023
View sourceQuestions About This Research
- What does the research say about 3d vivaldi antenna performance boosted by additive manufacturing vs. cnc milling?
- When designing 3D metallic antennas for wireless power telemetry, consider CNC milling for superior gain and bandwidth performance over additive manufacturing. Evidence: IEEE Open Journal of Antennas and Propagation (2023).
- Why does "3D Vivaldi Antenna Performance Boosted by Additive Manufacturing vs. CNC Milling" matter for design?
- The choice of manufacturing technique significantly impacts the performance of complex metallic structures like 3D Vivaldi antennas. Understanding these differences allows designers to select the optimal fabrication method to meet specific performance targets for applications such as wireless power telemetry.
- How can designers apply this research?
- When designing 3D metallic antennas for wireless power telemetry, consider CNC milling for superior gain and bandwidth performance over additive manufacturing.
- What were the main findings?
- The CNC milled antenna achieved a higher measured gain of 5.70 dBi compared to the AM antenna's 4.95 dBi.. The CNC milled antenna exhibited a wider measured bandwidth of 4.95 GHz (56.73% FBW) compared to the AM antenna's 4.70 GHz (52.86% FBW).. The CNC milled version was found to be 1.2x more effective in terms of realized gain than the AM version.
- What research method was used?
- Comparative experimental analysis.
- How strong is the evidence?
- Evidence strength is rated Strong effect, based on a 2023 journal from IEEE Open Journal of Antennas and Propagation.
- What should I do differently in my next project?
- When specifying manufacturing for a high-performance antenna project, conduct a comparative analysis of AM and CNC milling based on required gain, bandwidth, and geometric complexity.
- What are the limitations?
- The study focused on a specific antenna design; results may vary for different antenna types or geometries. The cost and complexity of each manufacturing method were not explicitly detailed.