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Multi-Probe Measurement System Based on Single-Cut Transformation for Fast Testing of Linear Arrays
Fernando Rodríguez Varela1, Manuel José López Morales1, Rubén Tena Sánchez1
1Radiation Group, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
Sensors (Basel, Switzerland)
|April 3, 2021
Summary
This study presents a rapid near-field measurement system for mass-producing linear arrays. The system quickly computes antenna performance metrics and feeding coefficients, enabling faster production line testing.
Area of Science:
- Electrical Engineering
- Antenna Theory and Measurement
Background:
- Mass production of linear antenna arrays requires efficient and fast testing methods.
- Traditional antenna measurements can be time-consuming, hindering high-volume manufacturing.
Purpose of the Study:
- To introduce a novel near-field measurement system concept for rapid testing of linear antenna arrays.
- To enable fast computation of radiation patterns, directivity, gain, and feeding coefficients for mass-produced antennas.
Main Methods:
- A linear multi-probe array measures the near-field of the antenna under test.
- Single-cut transformation techniques are employed for data postprocessing.
- A 'Gold Antenna' is fully characterized to compensate for limited 3D data.
Main Results:
- An X-band 16-probe demonstrator was successfully implemented and tested.
- The system computes key antenna parameters in seconds.
- Measurements show comparable results to traditional anechoic chamber methods.
Conclusions:
- The proposed near-field measurement system offers a fast and reliable solution for mass production testing of linear arrays.
- This concept has the potential to significantly reduce testing time and costs in antenna manufacturing.
