Antenna device

Communications: radio wave antennas – Antennas – Microstrip

Reexamination Certificate

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C343S702000

Reexamination Certificate

active

11260985

ABSTRACT:
An antenna device includes a first radiation electrode having an open end and a short-circuited end connected to ground and being coupled to a feed line at a feeding point. Furthermore, the antenna device has a second radiation electrode having an open end and a short-circuited end connected to ground, wherein a portion of the second radiation electrode is part of an electric circuit. The first radiation electrode, the feed line and the electric circuit are arranged such that an alternating current through the feed line to the short-circuited end of the first radiation electrode, for feeding the second radiation electrode, induces an alternating current into the electric circuit via magnetic coupling.

REFERENCES:
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patent: 6864841 (2005-03-01), Dai et al.
patent: 6897810 (2005-05-01), Dai et al.
patent: 2001/0043159 (2001-11-01), Masuda et al.
patent: 2002/0024466 (2002-02-01), Masuda
patent: 10142384 (2002-03-01), None
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patent: 2002223108 (2002-08-01), None
patent: 2003284398 (2003-10-01), None
patent: WO01/33665 (2001-05-01), None
Wong, K., et al. “Panar Antennas for Wireless Communication.” John Wiley and Sons, Inc., Hoboken, NJ, USA, 2003, pp. 26-53.
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Guo, Y., et al. “A Quarter-Wave U-Shaped Patch Antenna With Two Unequal Arms for Wideband and Dual-Frequency Operation.” IEEE Transactions on Antennas and Propagation. vol. 50, No. 8, Aug. 2002.
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Fei, L., et al. “Method Boosts Bandwidth of IFAs for 5-GHz WLAN NICs.” Microwaves & RF. Sep. 2002.
Korean Intellectual Property Office, “Notice of Reasons for Rejection”, (English translation), Oct. 26, 2006, 1 page.
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Japanese Patent Office, “Automatic Translation of JP 2002-223108”, Aug. 9, 2002, pp. 1-8.

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