Three-dimensional multi-frequency antenna

Communications: radio wave antennas – Antennas – Microstrip

Reexamination Certificate

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C343S703000, C343S749000

Reexamination Certificate

active

07920095

ABSTRACT:
A three-dimensional multi-frequency antenna includes a substrate; a shorting wall vertically formed on a first edge of the substrate; a radiation element including a first radiator corresponding to a first resonance frequency band, and a second radiator corresponding to a second resonance frequency band, the first radiator and the second radiator capable of generating a frequency-multiplying third resonance frequency extending toward opposite directions; and a connection element, for connecting the shorting wall and the radiation element, separated from a second edge of the substrate by a gap; wherein the width of the radiation element and the gap conforms to a specific ratio.

REFERENCES:
patent: 7170464 (2007-01-01), Tang et al.
patent: 2007/0115200 (2007-05-01), Ishimiya
patent: 2008/0122717 (2008-05-01), Su et al.
K. L. Wong, L. C. Chou, and C. M. Su, “Dual-Band Flat-Plate Antenna With a Shorted Parasitic Element for Laptop Applications,” IEEE Trans. Antennas Propagat., vol. 53, No. 1, pp. 539-544, Jan. 2005.

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