COMMUNICATION METHOD, METHOD FOR DETECTING POSITION OF RECEIVER AND TRANSMITTER

摘要

PURPOSE: To provide a communication method which can extend a communication possible range. CONSTITUTION: Synchronized transmission signals are simultaneously radiated from first and second antennas 1 and 2 of a transmitter for transmission. Information is transmitted by using an interference wave obtained by interfering with radio waves radiated from the antennas. Since the intensity of an electric field in the inside part of an interference pattern in the interference wave becomes stronger, a maximum transmittable area becomes wider than that of one regular antenna. In the part of the node of the interference pattern, the radio wave cannot be received. However a transmission state at the time of radiating the radio wave is adjusted and the interference pattern is changed and thereby, information can be transmitted to an arbitrary receiver existing in the maximum area.