Calibrating E-field probes with a tapered cell

Tapered cells can be used in E-filed probes calibration. Nevertheless, few research documents on tapered cells are found presently. In our lab, we configured an E-field probe calibration system with a tapered cell. By using a reference probe as standard, we can determine the correction factors of E-field probes for frequency range from 200 MHz to 2.5 GHz. This paper describes the structure and characteristics of the tapered cell. The way to use it for probes calibration is also introduced.