PURPOSE: To prevent the generation of standing waves and to perform stable detection of the positions, by dividing a plurality of conductors into sections having the specified length, forming the entire conductor pattern wherein the rotation is sequentially performed by the sections having the specified length in the longitudinal direction of the conductors, thereby equalizing input impedances of a plurality of the conductors.

CONSTITUTION: The total length of the N (8) conductors is divided into M blocks (M≥N). The conductors 2W8 are shifted to the left by K (1) blocks and the rotation is performed. Thus the entire conductor pattern is obtained. A signal having a constant frequency is transmitted from a moving body position detector Dt to the conductors 1W8 through an antenna L. The conductors 1, 3, 4, and 6 which are intensely coupled with the signal are detected by a position detecting device Ds through a switch S, and the positions of the moving bodies are detected from said outputs. Since the input impedances of the conductors 1W8 are equal, the generation of the standing waves are prevented and the stable position detection is performed.