Embedded Monopulse Waveguide in Additive Parabolic Antenna
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Solution Overview
Problem
Current monopulse tracking antenna designs are bulky and difficult to work with due to the physical mounting of RF components on the rear portion, leading to space constraints and changes in the antenna's center of gravity, necessitating reinforcement and customized mounting frameworks.
Innovation Solution
The design embeds RF components, including monopulse comparator waveguides, within the parabolic reflector itself using additive manufacturing techniques, creating a single 3D unit that integrates the main reflector's inner and outer faces with the embedded components, reducing the need for external mounting and enhancing structural stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RF components are physically mounted on the rear portion of the dish antenna, then the antenna can perform monopulse tracking functions, but the antenna becomes bulky and the center of gravity changes requiring reinforcement
Solution Approach 1:
The patent combines the RF components (monopulse comparator waveguide structure) with the dish antenna by embedding them within the reflector body itself. The waveguide structure is formed as an integrated part of the reflector using additive manufacturing, eliminating the need for separate mounting frameworks and reducing overall structural complexity while maintaining monopulse tracking functionality
Solution Approach 2:
The reflector body serves multiple functions: it acts as the reflective surface for signal reception and simultaneously houses the embedded RF components for monopulse tracking. This multi-functionality eliminates the need for separate mounting structures and reduces the overall device complexity
2Reliability
If hardware components are mounted on the rear portion of the dish antenna, then monopulse tracking is enabled, but physical space behind the antenna is constrained
Solution Approach 1:
The RF components are nested within the reflector body itself. The monopulse comparator waveguide structure is embedded inside the reflector, utilizing the internal volume of the dish antenna rather than occupying external rear space. This nesting approach enables monopulse tracking functionality while preserving rear space for other purposes
3Ease of manufacture
If multiple separate components are used for the reflector and RF components, then manufacturing flexibility is improved, but fabrication and assembly time increases
Solution Approach 1:
The patent merges the reflector and RF components into a single integrated structure that can be fabricated as one piece using additive manufacturing. This eliminates the need for separate assembly steps while maintaining the flexibility to customize the waveguide structure's position and configuration within the reflector body
Solution Approach 2:
The additive manufacturing process allows for easy modification of design parameters such as waveguide position, shape, and configuration without requiring different manufacturing processes or assembly steps. This maintains manufacturing flexibility while significantly reducing fabrication and assembly time
4Measurement precision
If waveguides are used to confine radio wave propagation, then directional control is improved, but waveguide losses occur
Solution Approach 1:
The patent extracts the waveguide structure from conventional separate mounting and integrates it directly into the reflector body. This embedded configuration shortens the waveguide path length and eliminates unnecessary transitions and connections, thereby reducing waveguide losses while maintaining directional control precision
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces fabrication and assembly time, eliminates the need for multiple vendors, minimizes waveguide losses, and improves antenna performance by embedding components closer to the feed horn array, while freeing up rear space and reducing the complexity of mounting and tuning processes.
Implementation Method 1
Reflector antennas are useful for a wide variety of applications
Implementation Method 2
a waveguide is a metallic transmission line that restricts a radio wave so that it travels in only one direction
Implementation Method 3
In order to redirect a radio wave, a waveguide must include walls that are completely reflective
Data Source
AI summary
Optimizations are provided in the design and fabrication of a parabolic antenna reflector. In particular, a parabolic antenna reflector comprises an inner reflective face being formed in a parabolic shape and a first outer circumferential portion. The parabolic antenna also includes an outer face being formed in a different parabolic shape and a second circumferential portion. The first outer circumferential portion is coupled to the second outer circumferential portion to form an inner body between the inner reflective face and the outer face. This inner body includes a monopulse comparator waveguide. As a result, the monopulse comparator waveguide is embedded between the inner reflective face and the outer face. In some instances, this waveguide includes one or more bends. Additionally, in some instances, the parabolic antenna reflector is fabricated using additive manufacturing techniques such that the parabolic antenna reflector is a single printed unit.