Wide bandwidth antenna arrays

Details Wide bandwidth antenna arrays Wide bandwidth antenna arrays

1998-06-11

1999-05-04

Wong, Don

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343803, H01Q 916

Patent

active

059008440

ABSTRACT:
A skewed Log Periodic Dipole Array (LPDA) used as the element in a linear or planar array, serves to remove the element spacing restriction and hence eliminates the grating lobe problem. The skewed form of the device has all dipoles greater in length than the shortest one, i.e. the highest frequency one, skewed such that they are "Z" shaped. When the angle between the end and center segments of the Z dipole is 90 degrees, the skewed LPDA has a constant width equal to the length of the highest frequency dipole.

REFERENCES:
patent: 2290800 (1942-07-01), Brown
patent: 2485138 (1949-10-01), Carter
patent: 4031536 (1977-06-01), Alford
patent: 4054877 (1977-10-01), Bogner et al.

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