Communications: radio wave antennas – Antennas – Plural diverse-type antennas using same active element
Reexamination Certificate
2005-09-06
2005-09-06
Wong, Don (Department: 2821)
Communications: radio wave antennas
Antennas
Plural diverse-type antennas using same active element
C343S7000MS
Reexamination Certificate
active
06940463
ABSTRACT:
An ultra-wideband antenna for operating in a frequency is disclosed wherein a monopole antenna extends from a ground plane. The monopole has an effective length L of one quarter wavelength at the lowest frequency f1. A dielectric resonator antenna (DRA) surrounds the monopole antenna for resonating at substantially between or at two and three times the lowest frequency f1, the DRA is of a height of less than ¾ L and is disposed in such a manner as being above the ground plane and either contacting or spaced therefrom by a gap G, wherein 0≦G≦0.2 H. The ultra-wideband antenna is of a much greater bandwidth than the sum of bandwidth of the monople or the DRA alone.
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Autar Yahia
Ittipiboon Apisak
Lapierre Marc
Lee David
Petosa Aldo
Alemu Ephrem
Her Majesty the Queen in Right of Canada, as represented by the
MacLean Doug
Teitelbaum Neil
Teitelbaum & MacLean
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