| 摘要 |
PROBLEM TO BE SOLVED: To obtain an antenna measuring device which measures wide band frequency characteristics of an antenna simultaneously and at low cost.SOLUTION: A high frequency signal in a frequency range desired to be measured is radiated from an antenna 110 and received by a measuring antenna part 120. After that, the high frequency signal distributed by a power distribution part 130 is band-limited by filters 141, 142, 143 which are different in passing frequency band. The high frequency signal having passed the filters 141, 142, 143 is frequency-converted by frequency conversion parts 151, 152, 153 and detected by a receiver 190 after synthesized by a power synthesizing part 180 so that an amplitude and a phase of the detected signal is detected by an amplitude phase detection part 200. By this configuration, the measurement can be performed using the receiver 190 which corresponds to a frequency range narrower than the frequency range desired to be measured, and wide band frequency characteristics of the antenna can be measured simultaneously and at low cost. |
