Waveguide Radiator, Array Antenna Radiator and Synthetic Aperture Radar System
AssigneeAstrium GmbH
InventorsChristian ROEMER, Alexander HERSCHLEIN
Life of this patent
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Abstract
A waveguide radiator includes a slotted waveguide with a plurality of transverse or longitudinal slots provided in the waveguide and an additional inner conductor provided in the waveguide. The inner conductor is formed, depending on the alignment of the slots in such a manner that the result is a feed according to the traveling wave principle, wherein all slots of the waveguide can be excited with identical phase.
Claims16
A waveguide radiator, comprising
- a slotted waveguide having a plurality of transversal or longitudinal slots provided in the slotted waveguide;
- and
- an additional inner conductor arranged in the slotted waveguide, wherein the additional inner conductor is configured, depending on the alignment of the slots, in such a manner that a result is a feed according to the traveling wave principle, wherein all slots of the waveguide are excited with identical phase.
The waveguide radiator of claim 110, wherein the slotted waveguide with the additional inner conductor is formed mirror-symmetrically around the feed point.
An array antenna radiator, comprising:
- one or more first slotted waveguides having
- a plurality of transverse slots provided in the first slotted waveguides;
- and
- an additional first inner conductor arranged in the first slotted waveguides, wherein the additional first inner conductor is configured, depending on alignment of the transverse slots, in such a manner that a result is a feed according to the traveling wave principle, wherein all transverse slots of the one or more first waveguides are excited with identical phase;
- and
- one or more second slotted waveguides having
- a plurality of longitudinal slots provided in the second slotted waveguides;
- and
- an additional second inner conductor arranged in the second slotted waveguides, wherein the additional second inner conductor is configured, depending on alignment of the longitudinal slots, in such a manner that a result is a feed according to the traveling wave principle, wherein all longitudinal slots of the one or more second waveguides are excited with identical phase.
The array antenna radiator of 12, wherein the one or more first waveguides are offset upwards with respect to the one or more second waveguides to form a step-like structure of the array antenna radiator.
A high-resolution synthetic aperture radar system, comprising:
- an array antenna radiator, which comprises
- one or more first slotted waveguides having
- a plurality of transverse slots provided in the first slotted waveguides;
- and
- an additional first inner conductor arranged in the first slotted waveguides, wherein the additional first inner conductor is configured, depending on alignment of the transverse slots, in such a manner that a result is a feed according to the traveling wave principle, wherein all transverse slots of the one or more first waveguides are excited with identical phase;
- and
- one or more second slotted waveguides having
- a plurality of longitudinal slots provided in the second slotted waveguides;
- and
- an additional second inner conductor arranged in the second slotted waveguides, wherein the additional second inner conductor is configured, depending on alignment of the longitudinal slots, in such a manner that a result is a feed according to the traveling wave principle, wherein all longitudinal slots of the one or more second waveguides are excited with identical phase.
Dependencies are inferred from the claim text.