Robotic Measurements of Antenna Patterns
With the development of millimeter-wave antennas in our research group, there is a need for characterizing such antennas after they are designed and fabricated. In practice, currently available facilities such as the anechoic chamber at the ElectroScience Laboratory, are fairly limited at frequencies above 40 GHz. A task like this requires specialized test setup for antenna gain measurements as a function of position or angle. These are generally grouped into near-field and far-field measurements. In the RF Microsystems group, we have integrated a programmable robotic arm with a network analyzer for performing gain measurements on small scale millimeter-wave antennas. Currently this robotic arm allows accurate and repeatable measurements at 50-67 GHz.