Antenna device

Communications: radio wave antennas – Antennas – Microstrip

Reexamination Certificate

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Details

C343S846000

Reexamination Certificate

active

07106256

ABSTRACT:
An antenna body is configured to comprise a dielectric member including a planar radiating conductor and a feeder. The radiating conductor is configured by combining a first forming element and a second forming element so as to share one portion, the first forming element having a circular shape, and the second forming element having a semi-oval shape. The feeder is connected to the radiating conductor at a peripheral portion in the second forming element, which is located on a side of the second forming element seen from the first forming element.

REFERENCES:
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patent: 6809687 (2004-10-01), Yuanzhu
patent: 6897808 (2005-05-01), Murch et al.
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patent: 2004/0100406 (2004-05-01), Hironori
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patent: 2004/0100408 (2004-05-01), Hironori
patent: 2004/0100409 (2004-05-01), Okado
patent: 2005/0156788 (2005-07-01), Lin
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patent: 3273463 (2002-02-01), None
patent: 2002-164731 (2002-06-01), None
M. Hammoud, et al., “Matching The Input Impedance of A Broadband Disc Monopole”, Electronics Letters, vol. 29, No. 4, Feb. 18, 1993, pp. 406-407.
Sung-Bae Cho, et al., “Ultra Wideband Planar Stepped-Fat Dipole Antenna for High Resolution Impulse Radar”, 2003 Asia-Pacific Microwave Conference, 4 pages.
Do-Hoon Kwon, et al., “A Small Ceramic Chip Antenna for Ultra-Wideband Systems” 5 pages.

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