Integrated Single-Piece Antenna Feed for Satellite Systems
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Solution Overview
Problem
Conventional antenna feeds for ring focus dish antennas suffer from performance degradation due to mechanical supports, increased complexity and cost from separate component assembly, and material limitations for space applications, particularly in SATCOM systems.
Innovation Solution
An integrated single-piece antenna feed with a circular waveguide input, coaxial feed horn, and turnstile polarizer, fabricated using 3D metal printing, which eliminates the need for separate components and supports, providing a unified structure for both transmitting and receiving modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If mechanical support structures (struts, dielectric) are used to support the subreflector, then structural stability is achieved, but aperture blockage increases and antenna performance degrades
Solution Approach 1:
The patent removes mechanical support structures (struts, dielectric supports) from the antenna aperture region. The subreflector is supported without requiring physical supports within the aperture, eliminating the blockage caused by these structures while maintaining structural stability through alternative support mechanisms outside the aperture.
Solution Approach 2:
The patent replaces mechanical support structures with a different configuration where the feed horn assembly itself provides the necessary support. The integrated single-piece feed structure eliminates the need for separate mechanical supports, substituting the traditional mechanical support system with an integrated structural design.
2Ease of manufacture
If separate components are used for antenna feed assembly (input section, polarizer, feed horn, subreflector), then manufacturing flexibility is improved, but assembly complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple separate components (input section, polarizer, feed horn, subreflector) into a single integrated feed structure. This merging eliminates the need for complex assembly operations, reduces the number of parts, and simplifies manufacturing while maintaining the functional capabilities of each individual component.
Solution Approach 2:
The integrated single-piece structure performs multiple functions simultaneously - it serves as the input section, polarizer, feed horn, and subreflector support all in one component. This multi-functionality reduces assembly complexity while maintaining manufacturing flexibility through the ability to design different functional regions within the unified structure.
3Manufacturing precision
If conventional separate-component antenna feeds are used, then component optimization is improved, but fabrication time and test time increase
Solution Approach 1:
The patent integrates multiple components into a single piece that can be manufactured in one fabrication process. This eliminates the sequential fabrication of separate components and their subsequent assembly, significantly reducing total fabrication time while maintaining the optimized performance of each functional region through integrated design.
4Stability of the object's composition
If dielectric or strut supports are used in space applications, then structural support is achieved, but material limitations and performance degradation occur
Solution Approach 1:
The patent removes dielectric and strut supports from the antenna structure, eliminating the material limitations associated with these components in space environments. The integrated single-piece structure, likely made from space-grade metal or composite material, provides structural support without relying on dielectric materials that may not be suitable for space applications.
Data Source
AI summary
Embodiments of the invention include an integrated single-piece antenna feed and a turnstile circular polarizer suitable for use in a satellite communications system. One embodiment of the integrated single-piece antenna includes a circular waveguide input, a turnstile, a coaxial feed horn, subreflector and subreflector support. Alternative embodiments utilize symmetrically oriented struts with or without a coaxial subreflector support to physically support a subreflector.