Communications: radio wave antennas – Antennas – Fractional – multiple – or full wave length linear type
Reexamination Certificate
2011-05-03
2011-05-03
Wimer, Michael C (Department: 2821)
Communications: radio wave antennas
Antennas
Fractional, multiple, or full wave length linear type
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.
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Kuramoto Akio
Yusa Hiroyuki
NEC Corporation
Sughrue & Mion, PLLC
Wimer Michael C
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