The flat antenna, and the system null median looping has the median looping and the decentering looping, has the rotary magnetic field for the identification which

摘要

The central loop (1) and four it adjoins the antenna also it has the plane surface eccentric loop (2). The central loop (1) starts making the magnetic field which crosses essentially in the antenna. Four eccentric loops (2) center of gravity the central loop (1) is placed on the periphery essentially, the eccentric loop (2) supplies electricity in order to start making the rotary magnetic field mainly inside parallel plane surface to the plane surface of the antenna. In order to form the electromagnetic field of opposite phase with the respective pair, to correlate with pair of the loop which it does not adjoin it is possible the eccentric loop (2). This way, the same electric current in order to flow to the trigonometry direction of opposite, can two loops of pair, connect two loops of pair. The Radio Frequency generator (7), two outputs (8 and 9) the 1st driving signal above (S1) and the 2nd driving signal (S2) the respective central loop (1) and it can supply to the eccentric loop (2) alternately.