Antenna device

Details Antenna device Antenna device

2007-06-05

2007-06-05

Le, Hoanganh (Department: 2821)

Communications: radio wave antennas

Antennas

Antenna with parasitic reflector

Reexamination Certificate

active

10542783

ABSTRACT:
Linear elements101ato101dare conductors, which have the element length equivalent to half a wavelength, have been placed so that they may draw a diamond shape. Delay elements102aand102bare bent conductors, which have a total length equivalent to one fourth wavelength and a length L2equivalent to one eighth. The linear elements101aand101care connected one another via the delay element102a, while the linear elements101band101dare connected one another via the delay element102b. A feeding section103is connected to each of the ends of the linear elements101aand101bfor feeding power to them. Between the tips of the linear elements101cand101d, a gap with a length L3is left. A reflector104has been placed at a distance h from a diamond-shape antenna with delay elements along the −Z axis, the distance h being equivalent to 0.42 wavelength. This achieves the antenna device, which may be suitably mounted on any of small wireless apparatuses and form a primary beam, of which horizontally-polarized wave or vertically-polarized wave tilts toward the horizontal direction.

REFERENCES:
patent: 4044360 (1977-08-01), Wolfson et al.
patent: 5404146 (1995-04-01), Rutledge
patent: 5914693 (1999-06-01), Takei et al.
patent: 6163306 (2000-12-01), Nakamura et al.
patent: 6573874 (2003-06-01), Saito et al.
patent: 6753826 (2004-06-01), Chiang et al.
patent: 6759988 (2004-07-01), Purr et al.
patent: 6836255 (2004-12-01), Davis
patent: 6861988 (2005-03-01), Gabriel et al.
patent: 7015871 (2006-03-01), Gottl et al.
patent: 2003/0043084 (2003-03-01), Egashira
patent: 0604304 (1994-06-01), None
patent: 1150381 (2001-10-01), None
patent: 7273541 (1995-10-01), None
patent: 11355030 (1999-12-01), None
European Search Report dated Nov. 17, 2005.
PCT International Search Report dated Apr. 27, 2004.
T. Kawamura, et al.; “A Planar-Type Multi-Sector Antenna Consisting of Slot Yagi-Uda Array,” IEICE B vol. J85-B No. 9, Sep. 2002, pp. 1633-1643 with partial English translation.
Y. Saito, et al.; “Design and analysis of the Open Ended Diamond Antenna,” IEICE B vol. J82-B No. 10, Oct. 1999, pp. 1915-1922 with partial English translation.

Affiliated with

Also associated with

Rating

Antenna device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Antenna device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3852914