Antenna using proximity-coupled feed method, RFID tag having...

Communications: radio wave antennas – Antennas – Microstrip

Reexamination Certificate

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Reexamination Certificate

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07629929

ABSTRACT:
An antenna, a RFID tag using the same, and an antenna impedance matching method thereof are provided. The antenna includes: a radiation patch for deciding a resonant frequency of the antenna; a ground plate disposed in parallel to the radiation patch; and a feeder disposed between the radiation patch and the ground plate in parallel for providing a RF signal to an element connected to the antenna, wherein the feeder includes a microstrip feed line proximately coupled to the radiation patch by being formed perpendicularly to the resonant length direction of the radiation patch.

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“Increasing the Bandwidth of a Microstrip Antenna by Proximity Coupling”. D.M. Pozar. Electonics Letter Apr. 9, 1987. vol. 23, No. 8. pp. 368-369.

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