Dual-antenna system for single-frequency band
First Claim
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1. A dual-antenna system comprising:
- a circularly polarized antenna for receiving circularly polarized signals from a satellite transmitter, said circularly polarized antenna having a first output; and
a linear antenna for receiving linear signals from a terrestrial transmitter, said linear antenna having a second output different from said first output, said circularly polarized antenna and said linear antenna being substantially concentric, said linear antenna including a plurality of linear antenna elements arranged symmetrically about said circularly polarized antenna.
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Abstract
A combination satellite and terrestrial antenna system for a single-source application. A first embodiment includes a cross dipole for receiving the circularly polarized satellite signals, and a plurality of monopoles for receiving linearly polarized terrestrial signals. The mono-poles are arranged symmetrically about the cross dipole. Alternative embodiments include a helix antenna for receiving the satellite signals, and one or more linear antennas arranged symmetrically with respect to the helix for the terrestrial signals.
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Citations
15 Claims
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1. A dual-antenna system comprising:
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a circularly polarized antenna for receiving circularly polarized signals from a satellite transmitter, said circularly polarized antenna having a first output; and
a linear antenna for receiving linear signals from a terrestrial transmitter, said linear antenna having a second output different from said first output, said circularly polarized antenna and said linear antenna being substantially concentric, said linear antenna including a plurality of linear antenna elements arranged symmetrically about said circularly polarized antenna. - View Dependent Claims (2, 3, 4)
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5. A dual-antenna system comprising:
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a first antenna for receiving and outputting circularly polarized signals, said first antenna having a center and a first output; and
a second antenna for receiving and outputting linearly polarized signals, said second antenna having a center and a second output separate from the first output, said first antenna and said second antenna being substantially concentric, said second antenna including a plurality of linear antenna elements arranged in a substantially symmetric configuration about said first antenna. - View Dependent Claims (6, 7, 8)
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9. A dual-antenna system comprising:
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a cross dipole antenna having a cross dipole output; and
a plurality of linear antenna elements arranged in a substantially symmetric pattern about said cross dipole antenna, said linear antenna elements having a linear output.
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10. A dual-antenna system comprising:
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a cross dipole antenna; and
four monopole antennas arranged in a substantially symmetric pattern about said cross dipole antenna with one of said monopole antennas located in each of the quadrants of said cross dipole antenna. - View Dependent Claims (11)
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12. A dual-antenna system comprising:
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a helix antenna having a first output; and
a plurality of linear antennas arranged symmetrically with respect to said helix, said linear antennas having a second output different from said first output antenna. - View Dependent Claims (13)
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14. A dual-antenna system comprising:
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a helix antenna having a first output; and
a plurality of monopole antennas arranged symmetrically with respect to said, said monopole antennas having a second output different from said first output helix antenna. - View Dependent Claims (15)
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Specification