ESTIMATING SYSTEM FOR ENVIRONMENTAL CHARACTERISTIC OF ELECTROMAGNETIC FIELD IN WIRELESS TERMINAL MACHINE

摘要

PROBLEM TO BE SOLVED: To realize more accurate estimation by carrying out sufficient characteristic estimation of a wireless terminal machine through an indoor simulation, and preventing an interference between a signal received in the wireless terminal machine and that transmitted from there. SOLUTION: Transmitting antennas 23a-23c are arranged in a sealed box 20 and a wireless terminal machine 22 being estimated object is also installed, and the environmental characteristic in electromagnetic field of a signal which is transmitted from the transmitting antennas 23a-23c and received by the terminal machine 22 is therefore reproduced. The terminal machine 22 is provided with a means for transmitting an information signal about the received signal of the strength of an electric field as a signal except a radio wave namely an optical signal, and an optical sensor 24 for receiving a received information signal transmitted from the terminal machine 22 is provided in the sealed box 20. Thus the received information signal from the terminal machine 22 in the sealed box 20 is inputted into the estimation control means of a personal computer 26 provided outside the sealed box 20 through the optical signal.