High isolation dual polarized antenna system using dipole...

Details High isolation dual polarized antenna system using dipole... High isolation dual polarized antenna system using dipole...

2008-07-15

2008-07-15

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

C343S797000, C343S810000

Reissue Patent

active

RE040434

ABSTRACT:
An antenna for receiving electromagnetic signals comprises: a ground plane with a length and having a vertical axis along the length. A plurality of dipole radiating elements, the radiating elements are comprised of first and second co-located, orthogonal dipoles, the dipoles are aligned at first and second predetermined angles with respect to the vertical axis, the radiating elements and ground plane produce first electromagnetic fields in response to said electromagnetic signals. A plurality of supports, the supports are connected to the ground plane and perpendicular to the vertical axis and placed between selected of the plurality of dipole radiating elements. A plurality of metallic parasitic elements are placed in a selected of said plurality of supports, the first electromagnetic fields exiciting currents in said metallic parasitic elements, the currents creating second electromagnetic fields, the second electromagnetic fields canceling with portions of the first electromagnetic fields.

REFERENCES:
patent: 4446465 (1984-05-01), Donovan
patent: 5629713 (1997-05-01), Mailandt et al.
patent: 5952983 (1999-09-01), Dearnley et al.
patent: 6072439 (2000-06-01), Ippolito et al.
patent: 6121935 (2000-09-01), Reece et al.
patent: 6864852 (2005-03-01), Chiang et al.

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