Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Reexamination Certificate
2007-05-15
2007-05-15
Dinh, Trinh Vo (Department: 2821)
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
C343S808000, C343S815000, C343S818000, C343S793000
Reexamination Certificate
active
11315017
ABSTRACT:
An antenna comprising a rectangular reflector; first and second dipole antennae disposed in front of the reflector and aligned parallel to the long edge of the reflector; rod-shaped first metal conductors arranged parallel to the first and second dipole antennae and separated from the dipole antennae by a distance X1to the outside in the direction parallel to the short edge of the reflector, and separated by a distance Y1in the direction perpendicular to the reflector; and rod-shaped second metal conductors disposed at a position separated from the dipole antennae by a distance X2greater than distance X1to the outside with respect to each other, and separated by a distance Y2greater than distance Y1forward in the direction perpendicular to the reflector.
REFERENCES:
patent: 5629713 (1997-05-01), Mailandt et al.
patent: 5710569 (1998-01-01), Oh et al.
patent: 6008773 (1999-12-01), Matsuoka et al.
patent: 2003/0095076 (2003-05-01), Lee et al.
patent: 0 730 319 (1996-09-01), None
patent: 5-291822 (1993-11-01), None
patent: 6-132721 (1994-05-01), None
patent: 7-3928 (1995-01-01), None
patent: 7-15232 (1995-01-01), None
patent: 2003-264426 (2003-09-01), None
patent: 2004-15365 (2004-01-01), None
Yuki Yamaguchi, et al., “Design of a Base Station Antenna with 60° Beam Width in the Horizontal Plane for Cellular Mobile Radios”, Electronics and Communications in Japan, Part I, XP-001200042, vol. 87, No. 11, 2004, pp. 68-76.
Yasuko Kimura, et al., “Horizontal Pattern Control of 60-Degree Sector Antennas by Closely Arranged Conductive Poles”, Technical Report of IEICE, vol. 104, No. 201, Jul. 21, 2004, pp. 37-42. (with English Abstract).
Yasuko Kimura, et al., “Control of Horizontal Radiation Pattern of Base Station Antenna for Cellular Mobile Communications by Performing Approach Arrangement of Slender Metal Conductors”, Academic Journal B of IEICE, Japan, vol. J87-B, No. 5, May 1, 2004, pp. 673-684. (with English Abstract).
Mikio Iwamura, et al. “Optimal Beamwidth of Base Station Antennas for W-CDMA”, 1999 General Conference of the Institute of Electronics, Information, and Communication Engineers, 4 pages.
Dinh Trinh Vo
NTT DoCoMo Inc.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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