MOBILE DEVICE

• Main Authors: Kishimoto, Yoshihisa, Kanbayashi, Satoshi, Yoneyama, Naoto, Kawasaki, Ryuta, Yamamoto, Shinichi
• Format: Patent
• Language: English; French; German
• Published: 05.02.2020
• Subjects: ANTENNAS, i.e. RADIO AERIALS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE; BASIC ELECTRIC ELEMENTS; CALCULATING; CHECKING-DEVICES; COMPUTING; COUNTING; ELECTRICITY; GENERATING RANDOM NUMBERS; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; TIME OR ATTENDANCE REGISTERS; VOTING OR LOTTERY APPARATUS

A mobile device (10) includes a first communication means (1) that transmits a first transmission signal (1a) to a vehicle side, a second communication means (2) that transmits a second transmission signal (2a) in response to an electromagnetic field received from the vehicle side, a control unit (15) that controls the first communication means (1) and second communication means (2), and a circuit board (9). The first communication means (1) includes a loop antenna (7) that is formed by a conductive wire (7a) formed on the circuit board (9). The second communication means (2) includes a transponder coil (6), having a substantially rectangular shape, on the circuit board (9). One shorter edge (6a) of the transponder coil (6) is placed near an edge (9a), of the circuit board (9), that faces the vehicle (50). The conductive wire (7a) is formed so as to enter a projected area, on the circuit board (9), of the transponder coil (6) from one longer edge of the projected area and exit the projected area from the other longer edge.