| 摘要 |
<p>PURPOSE:To provide the convenient microwave card not requiring the reception and transmission surfaces to turn to a host side at all times being used for the non-contact identification/information transfer system using the microwave, incorporating no oscillator for transmission, and having the function of reception, modulation, and transmission. CONSTITUTION:The microwave card 10 is provided with a composite double- sided micro strip antenna means 11 having a micro strip antenna 21 receiving the microwave transmitted from a host on one side of a card-like box and a slot antenna 22 to be connected to the micro strip antenna 21 on the other side. The receiving signal of this antenna means is carried to a microwave modulator 18 through a microwave guide path 17. The receiving signal is modulated by the information data stored in advance, and it can be transmitted to the host side through the microwave guide path 18 by the antenna means 11.</p> |
