To simulate transmission conditions of EM wave in freespace, the biomedical microwave anechoic chamber used for biomedical engineering research was developed.
为模拟电磁波在自由空间的传输状态，研制了用于生物医学工程研究的大型专用微波暗室。
2
To resolve this problem, a freespacetransmission system for optical signals is developed on base of diffraction effect of acoustooptic crystal.
The input impedances of the double-loop antenna in freespace are also calculated, and the results obtained are compared with those from transmission line transformation of ca…