On the Field Measurement of a Highly Efficient Reflectarray Antenna Using Electromagnets

This paper introduces a measurement on a highly efficient reflectarray antenna using electromagnets. Since the reflectarray antenna under test is electrically large, conventional measurement in an anechoic chamber is not available and field measurement is required. To eliminate the reflection interference from the ground, two approaches are proposed and utilized in the measurement. As a result, by simultaneously applying both methods, the measurement error is improved around 2.5 dB. This work provides another option to measure the reflectarray antenna with comparatively lower cost without significantly sacrificing the percision and accuracy.