Communication system with broadband antenna
First Claim
1. An antenna assembly comprising:
- a first horn antenna adapted to receive a signal from a source;
a second horn antenna, substantially identical to the first antenna, and adapted to receive the signal;
a first dielectric lens coupled to the first horn antenna to focus the signal to a feed point of the first horn antenna, the first dielectric lens having at least one groove formed in a surface thereof;
a second dielectric lens coupled to the second horn antenna to focus the signal to a feed point of the second horn antenna, the second dielectric lens having at least one groove formed in a surface thereof;
a waveguide feed network coupled to the feed points of the first and second horn antennas and including a first feed port and a second feed port, the waveguide feed network being constructed to receive the signal from the horn antennas and to provide a first component signal having a first polarization at the first feed port and a second component signal having a second polarization at the second feed port; and
a polarization converter unit coupled to the first feed port and the second feed port that is configured to compensate for any polarization skew between the antennas and the source.
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Accused Products
Abstract
A communication system including an antenna array with feed network coupled to communication electronics. In one example, a communication subsystem comprises a plurality of antennas each adapted to receive an information signal and a plurality of orthomode transducers coupled to corresponding ones of the plurality of antennas, each OMT is adapted to provide at a first component signal having a first polarization and a second component signal having a second polarization. The communication subsystem also comprises a feed network that receives the first component signal and the second component signal from each orthomode transducer and provides a first summed component signal at a first feed port and a second summed component signal at a second feed port, and a phase correction device coupled to the first and second feed ports and adapted to phase match the first summed component signal with the second summed component signal.
28 Citations
13 Claims
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1. An antenna assembly comprising:
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a first horn antenna adapted to receive a signal from a source; a second horn antenna, substantially identical to the first antenna, and adapted to receive the signal; a first dielectric lens coupled to the first horn antenna to focus the signal to a feed point of the first horn antenna, the first dielectric lens having at least one groove formed in a surface thereof; a second dielectric lens coupled to the second horn antenna to focus the signal to a feed point of the second horn antenna, the second dielectric lens having at least one groove formed in a surface thereof; a waveguide feed network coupled to the feed points of the first and second horn antennas and including a first feed port and a second feed port, the waveguide feed network being constructed to receive the signal from the horn antennas and to provide a first component signal having a first polarization at the first feed port and a second component signal having a second polarization at the second feed port; and a polarization converter unit coupled to the first feed port and the second feed port that is configured to compensate for any polarization skew between the antennas and the source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An antenna assembly comprising:
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an antenna adapted to receive an information signal; an orthomode transducer coupled to a feed point of the antenna and having a first port and a second port, the orthomode transducer being constructed to receive the information signal from the antenna and to split the information signal to provide, at the first port, a first component signal and, at the second port, a second component signal, the second component signal being orthogonally polarized to the first component signal; and a polarization converter unit coupled to the first and second ports of the orthomode transducer and adapted to receive the first and second component signals; wherein the polarization converter unit is constructed to compensate for polarization skew between the antenna and a source of the information signal and to phase match the first component signal to the second component signal; and wherein the polarization converter unit is further adapted to reconstruct the information signal, with any polarization, from the first and second component signals. - View Dependent Claims (13)
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Specification