| 摘要 |
PROBLEM TO BE SOLVED: To measure electric field intensity distribution on the periphery of an antenna for transmitting a modulated radio signal without impressing the antenna with any continuous sine wave for measurement.SOLUTION: Amplitude information on a vicinal electric field is found based on a signal component in a pilot channel extracted from a radio signal detected by an electric field sensor for signals with its measurement position variable. A phase difference between the phase of the radio signal detected by the field sensor and the phase of a radio signal detected by an electric field sensor for reference with its measurement position fixed is found as phase information on the vicinal electric field. Distant electric field intensity is calculated from position information acquired by the field sensor, the amplitude information on the vicinal electric field, and the phase information on the vicinal electric field. |
