| 摘要 |
PURPOSE: A flat film antenna is provided to accomplish high receiving efficiency, semi-permanent durability, light weight, and small size. CONSTITUTION: A flat film antenna comprises a bottom film(20), a ferrite coating film(21), a magnetic field generating circuit(22), a power supply(23), an electric wave receiver(24), a protection film, a converter(25), and a magnetic field controller(30). The bottom film(20) is circular or polygonal synthesized resin. The ferrite coating film(21) is formed along the boundary of the bottom film. The magnetic field generating circuit(22) magnetizes the ferrite coating film when power is applied. The electric wave receiver(24) is printed to form a network by fine solid lines with low receiving efficiency material for receiving the electric wave inside the ferrite coating film(21). The protection film is laminated on the magnetic field generating circuit(22) and the electric wave receiver(24). The magnetic field controller(30) adjusts strength of power to form magnetic field on the ferrite coating film(21) to increase receiving strength.
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