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US 9,070,971 B2Granted
Dual circularly polarized antenna
OwnerRonald H. Johnstoninventor
Life of this patent
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Abstract
A dual circularly polarized antenna is described. In some embodiments, the antenna includes a waveguide having an aperture at a first end and a conducting component at a second end, the conducting component shorting the waveguide. A first driven dipole is substantially orthogonal to a second driven dipole, and both the first and second driven dipoles are located near the aperture of the waveguide. The first and second driven dipoles are connected to the conducting component by one or more plates and configured to be fed in quadrature. A resonator is positioned near the first and second driven dipoles.
Claims17
An antenna comprising:
- a waveguide having an aperture at a first end and a conducting component at a second end, the conducting component shorting the waveguide;
- a first driven dipole substantially orthogonal to a second driven dipole, both the first and second driven dipoles located near the aperture of the waveguide, wherein the first and second driven dipoles are connected to the conducting component by one or more plates and configured to be fed in quadrature;
- and
- a resonator positioned near the first and second driven dipoles.
1 more element
An antenna comprising:
- a waveguide having an aperture at a first end and a conducting component at a second end, the conducting component shorting the waveguide, the waveguide configured to reduce circumferential current flow;
- and
- a first driven dipole substantially orthogonal to a second driven dipole, both dipoles located near the aperture of the waveguide, wherein the first and second driven dipoles are coupled to the conducting component by one or more plates and configured to be fed in quadrature.
Dependencies are inferred from the claim text.