VSAT
Maritime VSAT antenna concept
Year
2022
Type of Project
Main Project
My Role
Diploma project/Research
Case Study
Objective
Develop a concept for a VSAT satellite internet antenna for maritime transport. The goal was to design an antenna for Ku and Ka bands that could withstand sea conditions, including pitching, rolling, and vibrations, while providing stable communication. The design needed to include the reflector shape, directional diagram, and a concept for three-axis stabilization and rotation (azimuth, elevation, and feed axis). The concept was intended as a basis for further detailed development.
Process
I worked independently, consulting with the project supervisor and specialists from structural and radio engineering departments. The process included creating a concept based on existing solutions (Intellian, KNS, Cobham) and performing calculations for strength and stiffness of the support and rotating frame using Creo and Nastran.
Drive mechanisms were selected considering required angular speeds and accelerations, including sea motion effects, to ensure proper stabilization. The reflector shape and radiation pattern were calculated and simulated using specialized software.
The concept design provides a clear mechanical and functional solution. While additional detailing is required—such as electronic components, cabling, and refinement of mechanical nodes—the structural frame and reflector form are ready for next stages of development.
Outcome
The project resulted in a complete concept for a maritime VSAT antenna with a mechanically sound frame and optimized reflector. The concept includes preliminary three-axis rotation and stabilization principles. The antenna design can withstand marine conditions, and the reflector’s directional diagram meets the communication requirements. The concept serves as a strong foundation for detailed engineering and further prototyping.
Standout Features
Maritime-ready design able to withstand pitching, rolling, and vibrations.
Optimized reflector and frame for Ku and Ka band frequencies.
Three-axis rotation and stabilization concept covering azimuth, elevation, and feed axis..
Integrated mechanical and simulation work for structural strength, stiffness, and radiation pattern.