Dipole antenna having coupling tabs

Details Dipole antenna having coupling tabs Dipole antenna having coupling tabs

1996-09-19

1997-11-25

Hajec, Donald T.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343793, H01Q 916, H01Q 928

Patent

active

056917350

ABSTRACT:
A dipole having radiating elements (9, 14) which taper from the proximal end (1) of the radiating element to the distal end (2) of the radiating element. Electrical coupling is provided between adjacent lateral edges of the radiating elements by means of spaced apart tabs (10, 11, 12, 13). Cut-away portions (5, 5a) are provided between the proximal end (1) and the tabs (3, 4). By adjusting the distance between and the extent to which the tabs (10, 11, 12, 13) overlap the real part of the impedance of the dipole may be adjusted. The dipole may thus be configured to be directly driven from a feed-line without requiring matching components. This results in reduced complexity and losses. The dipole also exhibits reduced impedance variation, increasing the bandwidth of the dipole.

REFERENCES:
patent: 4513292 (1985-04-01), Bowman
patent: 4814783 (1989-03-01), Shelton et al.
patent: 4825220 (1989-04-01), Edward et al.

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