Calibration of antennas in the frequency range 18-40 GHz
| Reference number | |
| Coordinator | RISE Research Institutes of Sweden AB - RISE EMC Borås |
| Funding from Vinnova | SEK 400 000 |
| Project duration | January 2019 - December 2019 |
| Status | Completed |
Purpose and goal
The aim of the project was to develop a traceable method for calibrating antennas in the frequency range 18-40 GHz. A method, with associated measurement uncertainty, has been developed. Also instrument control software and data processing software has is developed and is in various states of completion. Work has begun to reach the final goal, which is a method published on BIPM with the associated CMC.
Expected results and effects
When comparing with computable antennas and an antenna calibrated at another NMI, good results are shown. As a result, there are good conditions for expanding today´s calibration possibilities, which is in the range of 30 MHz-18 GHz, to 40 GHz. In addition, it will also create a bridge, which means that in the long term it will be possible to develop methods for calibrating antennas even higher up in frequency.
Planned approach and implementation
The calibration is implemented by a so-called three-antenna method. This means that the antennas are measured against each other, two at a time. The calibration takes place in a fully anechoic chamber. By using one antenna with already known properties, the risks of systematic errors can be reduced by comparing the results with respect to previous calibrations for this known antenna.