| 主权项 |
1. An antenna array system for directing and steering an antenna beam, the antenna array system comprising:
a feed waveguide having
a feed waveguide wall,a feed waveguide length,at least one turn along the feed waveguide length,a first feed waveguide input at a first end of the feed waveguide, anda second feed waveguide input at a second end of the feed waveguide,wherein the feed waveguide is configured to receive a first input signal at the first feed waveguide input and a second input signal at the second feed waveguide input, and at least two directional couplers in signal communication with the feed waveguide,
wherein each directional coupler, of the at least two directional couplers, has a bottom wall that is adjacent to the waveguide wall of the feed waveguide, andwherein each directional coupler is configured to produce a first coupled signal from the first input signal and a second coupled signal from the second input signal; at least two pairs of planar coupling slots along the feed waveguide length,
wherein a first pair of planar coupling slots, of the at least two pairs of planar coupling slots, corresponds to the a first directional coupler, of the at least two directional couplers, and a second pair of planar coupling slots, of the at least two pairs of planar coupling slots, corresponds to the a second directional coupler, of the at least two directional couplers,wherein the first pair of planar coupling slots are cut into the feed waveguide wall of the feed waveguide and the adjacent bottom wall of the first directional coupler and the second pair of planar coupling slots are cut into the feed waveguide wall of the feed waveguide and the adjacent bottom wall of the second directional coupler; and at least two horn antennas,
wherein a first horn antenna, of the at least two horn antennas, is in signal communication with the first directional coupler and a second horn antenna, of the at least two horn antennas, is in signal communication with the second directional coupler,wherein the first horn antenna is configured to receive both the first coupled signal and the second coupled signal from the first directional coupler and the second horn antenna is configured to receive both the first coupled signal and the second coupled signal from the second directional coupler,wherein the first horn antenna is configured to produce a first polarized signal from the received first coupled signal and a second polarized signal from the received second coupled signal and the second horn antenna is configured to produce a first polarized signal from the received first coupled signal and a second polarized signal from the received second coupled signal,wherein the first polarized signal of the first horn antenna is cross polarized with the second polarized signal of the first horn antenna and the first polarized signal of the second horn antenna is cross polarized with the second polarized signal of the second horn antenna, andwherein the first polarized signal of the first horn antenna is polarized in the same direction as the first polarized signal of the second horn antenna and second polarized signal of the first horn antenna is polarized in the same direction as the second polarized signal of the second horn antenna. |
