Handset quadrifilar helical antenna mechanical structures

Details Handset quadrifilar helical antenna mechanical structures Handset quadrifilar helical antenna mechanical structures

2007-02-06

2007-02-06

Dinh, Trinh Vo (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S702000

Reexamination Certificate

active

11130035

ABSTRACT:
A quadrifilar helical antenna comprising two pairs of filars having unequal lengths and phase quadrature signals propagating thereon. A disk-like impedance matching element disposed at a lower end of the antenna matches a source impedance to an antenna impedance. In certain embodiments a first crossbar connector on a substrate disposed at an upper end of the antenna electrically connects two helical filars to form a first filar pair and a second crossbar connector disposed on the substrate connects two filars to form a second filar pair.

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