METHOD FOR MEASURING ELECTROMAGNETIC FIELD, ELECTROMAGNETIC FIELD MEASUREMENT DEVICE, AND PHASE IMAGING DEVICE

摘要

An electromagnetic field measurement device (10) includes a first probe (21) and a second probe (22) arranged in a space to measure an electric field, a reference signal generator (31) that generates a reference signal, a first multiplier (32) that multiplies the reference signal by a signal obtained via the first probe (21), a second multiplier (34) that multiplies a signal obtained via the second probe (22) by the signal output from the first multiplier (33), and a synchronous detector (35) that extracts a signal component that is synchronous with the reference signal from the signal output from the second multiplier (34).