Skycross, Inc.

Other

Murray Fugate

Young-Min Jo

John Charles Farrar

Gregory A O'Neill, Jr

Se-Hyun Oh

Jin Hee Yoon

Myung Sung Lee

Joo Mun Lee

Sang Ok Choi

Eun Seok Han

Paul Anthony Tornatta, Jr

Ki-Chul Kim

Joon-Wan Lee

A quadrifilar helical antenna comprising two pairs of filars having unequal lengths and phase quadrature signals propagating thereon. A conductive H-shaped impedance matching element matches a source impedance to an antenna impedance. The impedance matching element having a feed terminal at the center thereof from which current is supplied to the two filars of each filar pair disposed about an edge of the impedance matching element and symmetric with respect to a center of the impedance matching element. The impedance matching element further comprises a reactive element for matching the antenna and source impedances.

Quadrifilar helical antenna

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.

Handset quadrifilar helical antenna mechanical structures

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Coral Springs, FL, United States of America

Murray Fugate