Measurement of antenna gain for conical monopole antenna with double-Boltzmann tapered-line

It is well known that electromagnetic fields caused by an electrostatic discharge (ESD) have a fast transient impulsive waveform and a broadband spectrum. The electromagnetic field of an ESD event is often threat to information technology equipment such as a computer system. A conical monopole antenna with a double-Boltzmann tapered-line was proposed for measurements of such broadband electromagnetic fields. In the previous study, although a return loss and an impulse response were measured, an antenna gain was not measured. In this paper, the absolute gain of the antenna was measured by the standard field method using a vector network analyzer, and the measurement result were shown. Then an applicability of the antenna for broadband measurements in microwave frequencies was discussed.