Importance

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Abstract

An annular antenna system comprises a first ring assembly having a first shorting wall and a second ring assembly having a second shorting wall. The second ring assembly is arranged substantially parallel to the first ring assembly. The annular antenna system further comprises four RF ports on a top surface of the first annular conductor at ninety-degree intervals. Each of the RF ports has a housing electrically connected to the first annular conductor and a center conductor electrically connected to the second annular conductor. Each RF port is configured to receive and apply an RF signal to the first ring assembly. The first ring assembly comprises first and second annular conductors, and the first shorting wall electrically couples the first and second annular conductors. The second ring assembly comprises a third and fourth annular conductors, and the second shorting wall electrically couples the third and fourth annular conductors.

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First Claim