Article provided with feed circuit board

The invention claims a device is set with stable frequency characteristics of the feed circuit feed circuit board and it can be all kinds of them are connected with signal feedback circuit board of the object. The object is set with inductance element l of the feed circuit feed circuit board and the feed-back circuit is connected with the wireless communication circuit board used in. The wireless communication circuit carrier plate is installed on the feeding circuit board. The object also provided with radiant panel of the radiant panel radiation through the magnetic field coupling with the feed circuit feed and it is composed of feeding circuit resonance frequency of determining the frequency of sending signal and the received signal is received through the magnetic field coupling with supply feed circuit.