An Accurate Delay-Time Measuring Equipment in the 50-GHz Region

An accurate delay-time measuring equipment operating in the 50-GHz region has been developed. The equipment can measure wide-band delay-time characteristics of millimeter wave component and waveguide line. Sweep frequency range is variable from 0 to 1.5 GHz at any of the 46 to 52 GHz. The measurement method employs the usual comparison method and a newly developed rapid automatic switching method. The accuracy of the equipment is 0.1 ns at 20-dB insertion loss. Finally, some measured results are described.