Phased Array Antenna Switching for Multi-Satellite Modem Routing
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Solution Overview
Problem
Existing satellite communication antennas face challenges with large Size, Weight, Power, Cost, and Reliability (SWaP-C+R) due to mechanical steering systems and electronically steered arrays, limiting their applications, especially in moving platforms, and requiring multiple satellite connections and secure data transfer.
Innovation Solution
A system utilizing multiple phased array antennas with variable dielectric phase shifters and real-time control mechanisms to dynamically switch and combine signals, enabling secure and efficient communication with multiple satellites, even in moving platforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanically steered antennas are used to maintain directional steering, then the antenna can track satellites, but the system becomes physically large and has reduced reliability due to moving parts
Solution Approach 1:
The patent replaces mechanical steering systems with electronically steered arrays (ESAs) that use phase shifters and signal processing to achieve beam steering without moving parts. This substitution eliminates mechanical wear and failure points while reducing the physical size and weight of the antenna system, directly resolving the contradiction between reliability and weight.
2Volume of moving object
If electronically steered arrays are used to reduce physical size, then the antenna becomes more compact, but power consumption increases significantly
Solution Approach 1:
The patent implements dynamic antenna selection and beamforming strategies where the system actively monitors signal quality and dynamically switches between multiple antennas and adjusts beam directions in real-time. This dynamic operation allows the system to use multiple lower-power antennas in sequence or combination rather than continuously operating a single high-power ESA, thereby reducing overall power consumption while maintaining compact form factor.
Solution Approach 2:
The patent combines multiple antennas and their signal paths into a unified system with centralized control and signal processing. By merging the functionality of multiple antennas and using beamforming techniques to combine their outputs, the system achieves the performance of a single high-power ESA while distributing the power consumption across multiple lower-power antenna elements.
3Device complexity
If a single antenna is used to reduce complexity, then the system becomes simpler, but the ability to maintain connections with multiple satellites is limited
Solution Approach 1:
The patent designs the antenna system with multiple ESAs that can independently and simultaneously track multiple satellites. Each antenna is capable of electronic beam steering to any satellite in view, making the system universally adaptable to different satellite configurations. The centralized controller intelligently assigns satellites to appropriate antennas and manages beamforming parameters, enabling multi-satellite connectivity without proportionally increasing system complexity.
Solution Approach 2:
The patent segments the antenna system into multiple independent ESA units, each capable of autonomous satellite tracking. This segmentation allows the system to divide and conquer the complex task of multi-satellite communication by assigning different satellites to different antenna segments, thereby managing complexity through modular architecture while achieving high versatility.
4Power
If larger aperture size is used to increase gain, then signal strength improves, but the physical size and thickness of the antenna increases
Solution Approach 1:
The patent uses electronic beamforming and phase shifting techniques to achieve high gain in the angular domain without increasing the physical aperture dimensions. By manipulating the phase and amplitude of signals across the antenna elements, the system creates focused beams with high directional gain while maintaining a compact physical footprint, effectively trading spatial dimension for signal processing dimension.
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
Enhances communication reliability and security by maintaining connections and splitting data across multiple paths, reducing power consumption and physical size, while supporting secure file transfer and efficient data handling.
Implementation Method 1
Each antenna includes a phased array of radiators and a plurality of phase shifters, each phase shifter introducing delay to an RF signal propagating therethrough
Data Source
AI summary
A system having a platform upon which several phased antenna arrays are mounted and which can communicate with satellites. The system includes a switch that can connect any of the phased array antennas to any of available modems. The system further includes a router that can connect any of the modems to any available computing devices. Based on parameters such as data rates, signal strength, and account information, one or more communication paths are selected for a computing device requesting to communicate with a satellite. Each communication path is established by operating the switch to connect a selected antenna to a selected modem, and operating the router to transfer data between the computing device and the selected modem.