Title :
Far Range Transponder; Field-physical basis for electrically coupled bidirectional far range transponders
Author :
Meyl, Konstantin
Author_Institution :
Furtwangen Univ., Furtwangen
Abstract :
With the current RFID technology the transfer of energy takes place on a chip card by means of longitudinal wave components in close range of the transmitting antenna. Those are scalar waves, which spread towards the electrical or the magnetic field pointer. In the wave equation with reference to the Maxwell field equations, these wave components are set to zero, why only postulated model computations exist, after which the range is limited to the sixth part of the wavelength. A goal of this paper is to create, by consideration of the scalar wave components in the wave equation, the physical conditions for the development of scalar wave transponders which are operable beyond the close range. The energy is transferred with the same carrier wave as the information and not over separated ways as with RFID systems. Besides the bi-directional signal transmission, the energy transfer in both directions is additionally possible because of the resonant coupling between transmitter and receiver. First far range transponders developed on the basis of the extended field equations are already functional as prototypes, according to the US-Patent No. 787,412 of Nikola Tesla, New York 1905.
Keywords :
Maxwell equations; radiofrequency identification; transmitting antennas; transponders; wave equations; Maxwell field equation; RFID technology; bidirectional signal transmission; far range transponder; longitudinal wave component; scalar wave component; scalar wave transponders; transmitting antenna; wave equation; Antenna accessories; Bidirectional control; Computational modeling; Couplings; Magnetic fields; Maxwell equations; Partial differential equations; Radiofrequency identification; Transmitting antennas; Transponders;
Conference_Titel :
RFID Eurasia, 2007 1st Annual
Conference_Location :
Istanbul
Print_ISBN :
978-975-01566-0-1
DOI :
10.1109/RFIDEURASIA.2007.4368101