Millimeter Wave Antenna Phase Pattern Measurement using the Differential Phase Method with Only One Power Meter

The differential phase measurement method has been improved to need the use of only one power meter instead of three power meters. This enables accurate antenna phase pattern measurements with a simplified set-up, accompanied by the reduction in cost. All advantages of the differential phase measurement method are still also present, e.g. there is no need to phase lock oscillators or to use rotary joints. Measurement results for an antenna at 110 GHz are presented. A comparison t earlier data shows good agreement.