Quadrifilar helical antenna

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 cent...

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Bibliographic Details
Main Authors YOON JIN HEE, FUGATE MURRAY, FARRAR JOHN C, LEE MYUNG SUNG, O'NEILL GREGORY A, JO YOUNG-MIN, OH SE-HYUN, CHOI SANG OK, LEE JOO MUN, HAN EUN SEOK
Format Patent
LanguageEnglish
Published 12.07.2011
Subjects
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRICITY
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Summary: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.
Bibliography:Application Number: US20090367528