Dual polarized antenna

Communications: radio wave antennas – Antennas – Fractional – multiple – or full wave length linear type

Reexamination Certificate

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Details

C343S725000, C343S728000, C343S853000

Reexamination Certificate

active

07936314

ABSTRACT:
To provide a dual polarized antenna capable of reducing correlation between antenna elements.A dual polarized antenna is constituted by a vertically polarized antenna and a horizontally polarized antenna formed on a printed circuit board and radiates two kinds of polarized waves. The vertically polarized antenna has a configuration in which: a first microstripline is extended along the longitudinal direction of the printed circuit board from the lower portion of the printed circuit board; a first conductive radiating element is disposed at one end of the first microstripline; a phase delay circuit is serially connected to the first conductive radiating element; a second conductive radiating element is added to one end of the phase delay circuit; and a third conductive radiating element is added to a ground conductor which is disposed on the rear side of the surface of the printed circuit board on which the first conductive radiating element and first microstripline are connected at a corresponding portion thereof.

REFERENCES:
patent: 6104356 (2000-08-01), Hikuma et al.
patent: 6163306 (2000-12-01), Nakamura et al.
patent: 7-7321 (1995-01-01), None
patent: 7-86825 (1995-03-01), None
patent: 9-64639 (1997-03-01), None
patent: 10-107533 (1998-04-01), None
patent: 2003-514422 (2003-04-01), None
patent: 2003-347822 (2003-12-01), None
patent: 2005-94088 (2005-04-01), None
patent: 2005-167705 (2005-06-01), None
patent: 2008-512940 (2008-04-01), None
patent: 2006031276 (2006-03-01), None

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