SPATIALLY-FED HIGH POWER AMPLIFIER WITH SHAPED REFLECTORS
First Claim
1. A spatially-fed high-power amplifier comprising:
- one or more curved reflectors having an associated one or more radio-frequency (RF) reflective surfaces having curvatures configured to reflect an initial wavefront and generate a reflected wavefront; and
a spatially-fed active array amplifier configured to amplify the reflected wavefront to generate a high-power planar wavefront, the curvatures of the one or more reflective surfaces to at least in part compensate for an amplitude taper of the initial wavefront and provide the reflected wavefront with substantially uniform amplitude when incident on the spatially-fed active array amplifier,wherein an RF source generates the initial wavefront having the amplitude taper.
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Abstract
A spatially-fed high-power amplifier comprises one or more shaped reflectors to reflect an initial wavefront, and an active array amplifier to amplify the reflected wavefront to generate a high-power planar wavefront. The shaped reflectors provide the reflected wavefront with substantially uniform amplitude when incident on the active array amplifier. The initial wavefront may be a substantially spherical wavefront, and the shaped reflectors may compensate for any amplitude taper of the initial wavefront to provide the reflected wavefront with substantially uniform amplitude components for incident on the active array amplifier. In some embodiments, the shaped reflectors may also contour the illumination to fit the shape of the active array amplifier to help minimize spillover.
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Citations
12 Claims
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1. A spatially-fed high-power amplifier comprising:
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one or more curved reflectors having an associated one or more radio-frequency (RF) reflective surfaces having curvatures configured to reflect an initial wavefront and generate a reflected wavefront; and a spatially-fed active array amplifier configured to amplify the reflected wavefront to generate a high-power planar wavefront, the curvatures of the one or more reflective surfaces to at least in part compensate for an amplitude taper of the initial wavefront and provide the reflected wavefront with substantially uniform amplitude when incident on the spatially-fed active array amplifier, wherein an RF source generates the initial wavefront having the amplitude taper. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A spatially-fed millimeter-wave amplifier comprising:
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a first shaped reflector comprising a section of a modified paraboloid surface; a second shaped reflector comprising a section of a modified hyperboloid surface, the reflectors having curvatures configured to reflect a substantially spherical initial wavefront and generate a reflected wavefront; and a spatially-fed active array amplifier configured to amplify the reflected wavefront to generate a high-power planar wavefront, wherein the curvatures of the reflective surfaces are selected to at least in part compensate for an amplitude taper of the initial wavefront and are selected to provide the reflected wavefront with substantially uniform amplitude components when incident on the active array amplifier, and wherein an RF source generates the substantially spherical initial wavefront having the amplitude taper. - View Dependent Claims (10, 11, 12)
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Specification