Curved Antenna Beam Trajectory Control
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Solution Overview
Problem
There is a need for a novel approach to control antenna patterns, particularly to ensure that the trajectory of antenna beams does not intersect with obstacles in the vicinity of the antenna device, requiring a method to manipulate the curvature of the beam in the near field region.
Innovation Solution
A method involving data constraints on the antenna array's trajectory curvature, using processing units to define electrical inputs for antenna units, assigning weighting parameters for amplitude and phase to achieve a predetermined electromagnetic field trajectory that avoids obstacles, employing functions like Airy and Half-Bessel functions to simulate and adjust the beam's path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional linear antenna beam trajectories are used, then the beam propagation is simple and predictable, but the beam cannot bypass obstacles in the near field region
Solution Approach 1:
The patent applies dynamics by transitioning from static linear beam trajectories to dynamic curved trajectories. The antenna system uses time-varying phase and amplitude distributions across the antenna elements to generate beams that naturally curve in the near field region, allowing the beam path to adapt dynamically to obstacle locations while maintaining control through mathematical function-based parameter adjustment.
Solution Approach 2:
The patent implements parameter changes by modifying the phase and amplitude parameters of individual antenna elements based on selected mathematical functions (Airy, Bessel, etc.). By adjusting these parameters according to the chosen function and its arguments, the system controls the curvature and shape of the beam trajectory in the near field without changing the physical antenna structure, thus achieving adaptability through parameter optimization.
2Reliability
If the beam trajectory is curved to avoid obstacles, then obstacle avoidance is achieved, but control precision of the beam path becomes more difficult
Solution Approach 1:
The patent applies preliminary action by pre-selecting appropriate mathematical functions (Airy, Bessel, or combinations) that inherently produce the desired curved trajectory characteristics. These functions are chosen based on the obstacle location and communication requirements before beam transmission, allowing the system to predict and control the beam path accurately in advance, thereby achieving both reliable obstacle avoidance and precise trajectory control.
Solution Approach 2:
The patent implements feedback through an iterative optimization process where the beam trajectory is simulated and compared against the desired path. The system adjusts the phase and amplitude parameters of antenna elements based on the difference between the actual and target trajectories, repeating this process until the beam path accurately follows the intended curved trajectory that bypasses obstacles while maintaining communication quality.
3Shape
If weighting parameters are assigned to control near field trajectory, then beam curvature is achieved, but far field performance may be compromised
Solution Approach 1:
The patent applies local quality by applying different phase and amplitude weighting parameters to different regions of the antenna array based on the selected mathematical function. The weighting is localized to create the desired curved trajectory in the near field region while maintaining appropriate beam characteristics in the far field. This spatially varying quality control allows the beam to have different shapes and properties in different regions, achieving both near field curvature and far field communication reliability.
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
The method effectively controls the curvature of antenna beams in the near field region, allowing them to bypass obstacles while maintaining desired properties in the far field region, such as gain and side lobe levels, enhancing communication and reducing interference.
Implementation Method 1
building, using a processing unit, at least one set of at least one function usable for defining electrical input to be provided to said antenna units for complying with said constraint, and based on data indicative of an arrangement of the antenna units in the array and said at least one set of at least one function, assigning to each of the antenna units a respective weighting parameter for at least an amplitude of electrical input to be provided to said antenna unit
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
A method of controlling an electromagnetic antenna field generated by an array of antenna units comprises controlling at least the amplitude of electrical input provided to each of the antenna units, and generating at least one electromagnetic antenna field by the antenna units, wherein the trajectory of the electromagnetic antenna field is curved in the near field region, as a consequence of at least said control. A method comprises providing data indicative of at least one constraint on a curvature of a trajectory of propagation of an electromagnetic antenna field to be generated by the array of antenna unit in the near field region, building, using a processing unit, at least one set of at least one function usable for defining electrical input to be provided to said antenna units for complying with said constraint, assigning to each of the antenna units a respective weighting parameter and generating an electromagnetic antenna field.