3D Antenna Orientation Control for Stable Mobile Links
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Communication between antennas can become unstable due to the movement characteristics of mobile bodies and the directivity of antennas, particularly in scenarios like marine vessels communicating with land, where beam widths of E and H planes differ and need to accommodate both horizontal and vertical movements.
Innovation Solution
An antenna control device that measures displacement in three-dimensional directions, determines antenna gain thresholds, and adjusts the orientations of both mobile and fixed antennas to maintain optimal gain levels by using a control unit and drive mechanisms like stepping motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a directional antenna with high directivity is used for communication between mobile bodies, then communication distance and signal strength are improved, but communication stability deteriorates due to movement characteristics and directivity constraints
Solution Approach 1:
The patent applies dynamics by making the antenna orientation adjustable rather than fixed. The antenna can dynamically change its orientation angle based on the relative position and movement of communication partners, allowing the system to adapt to changing environmental conditions while maintaining stable communication
Solution Approach 2:
The patent changes the orientation parameter of the antenna to optimize communication. By adjusting the orientation angle according to displacement measurements and antenna characteristics, the system maintains optimal signal strength despite movement characteristics of mobile bodies
2Power
If the antenna orientation is fixed to optimize for one direction, then gain in that direction is improved, but adaptability to different movement scenarios deteriorates
Solution Approach 1:
The system transitions from a static fixed orientation to a dynamic adjustable orientation. The antenna orientation is continuously adjusted based on real-time displacement measurements and communication quality, enabling the system to adapt to various movement scenarios while maintaining optimal gain
Solution Approach 2:
The patent implements feedback by measuring displacement in three-dimensional space and using this information to adjust antenna orientation. The system continuously monitors communication conditions and adjusts the antenna angle accordingly, creating a closed-loop control system that balances gain optimization with adaptability
3Power
If the antenna beam width is narrowed to increase directivity, then signal strength is improved, but the ability to accommodate three-dimensional movement deteriorates
Solution Approach 1:
The patent makes the antenna orientation dynamic to compensate for the narrow beam width. By continuously adjusting the orientation angle based on displacement measurements, the system maintains signal strength despite the limited angular coverage of a narrow beam, effectively tracking the movement of communication partners
Data Source
AI summary
An antenna control device (10) according to the present invention includes: a mobile environment characteristic measurement unit (11) that measures a displacement amount in a three-dimensional direction of a first communication device (1) on which a first antenna (3) is mounted; a storage unit (14) that stores antenna characteristics of the first antenna (3); and a determination unit (12) that determines whether or not a gain of the first antenna (3) is equal to or greater than a threshold when the first communication device (1) communicates with a second communication device (2), and in a case where the gain of the first antenna (3) is less than the threshold value, receives as input the antenna characteristics of the first antenna (3) and the displacement amount in the three-dimensional direction of the first communication device (1) to determine orientations of the first antenna (3) and a second antenna (4) that is mounted on the second communication device (2) so that the gain of the first antenna (1) is equal to or greater than the threshold; and a first antenna orientation change unit (13) that receives a determination result from the determination unit (12) and changes the orientation of the first antenna (3).