Crossed dipole antenna element

Details Crossed dipole antenna element Crossed dipole antenna element

2006-05-30

2006-05-30

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

C343S793000, C343S795000

Reexamination Certificate

active

07053852

ABSTRACT:
A crossed dipole antenna element comprising first and second dipoles, each dipole having a pair of arms, each arm having a first portion extending from a central axis and a second portion extending out of a plane including the first portion and the central axis. In certain embodiments the second portions of the arms of the first dipole extend in a first rotational direction and the second portions of the arms of the second dipole extend in a second rotational direction. This improves the isolation performance of the antenna. In certain embodiments the second portion of each arm branches out at an intermediate position along the length of the arm. This improves the bandwidth performance of the antenna.

REFERENCES:
patent: 3369245 (1968-02-01), Rea
patent: 5952983 (1999-09-01), Dearnley et al.
patent: 5966102 (1999-10-01), Runyon
patent: 6034649 (2000-03-01), Wilson et al.
patent: 6069590 (2000-05-01), Thompson, Jr. et al.
patent: 6072439 (2000-06-01), Ippolito et al.
patent: 6211840 (2001-04-01), Wood et al.
patent: 6608600 (2003-08-01), Eriksson
patent: 6717555 (2004-04-01), Teillet et al.

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