Beam Scanning Resonator Array With Row-Column Voltage Control
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Solution Overview
Problem
Current beam scanning apparatuses, particularly in non-mechanical systems, require a significant amount of voltage information for operation, which can lead to inefficiencies and increased complexity, especially in applications like advanced driving assistance systems and LIDAR technology where reduced voltage information is needed to optimize scanning performance.
Innovation Solution
A beam scanning apparatus is designed with a two-dimensional array of antenna resonators, utilizing row and column voltage lines with saw-toothed voltage distributions and a driving voltage conversion circuit to control the phase shift of reflected light, reducing the number of required voltage inputs by using a combination of transformation circuits and voltage modulo calculation circuits to manage voltage levels effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a non-mechanical beam scanning apparatus uses a large number of independently controlled antenna resonators to achieve precise beam control, then the beam scanning precision and coverage are improved, but the amount of voltage information required for operation increases significantly
Solution Approach 1:
The patent divides the two-dimensional array of antenna resonators into row groups and column groups, controlling each group independently rather than each individual resonator. This segmentation reduces the number of voltage inputs from N×M (for N rows and M columns) to approximately N+M, significantly reducing voltage information requirements while maintaining beam scanning capability through coordinated group control
Solution Approach 2:
The patent makes the row voltage lines and column voltage lines serve multiple functions simultaneously. Each row voltage line controls all antenna resonators in its row across different columns, and each column voltage line controls all antenna resonators in its column across different rows. This multi-functionality allows the same voltage lines to control multiple resonators, reducing the total number of voltage inputs needed
2Measurement precision
If each antenna resonator is controlled by separate voltage inputs to achieve independent phase control, then the phase control precision is improved, but the system complexity increases
Solution Approach 1:
The patent merges the control functions by having row voltage lines and column voltage lines intersect to control antenna resonators at their intersections. Instead of separate control lines for each resonator, the system combines row and column control signals, where the voltage applied to a specific antenna resonator is determined by the combination of its row voltage line and column voltage line, thereby reducing system complexity
Solution Approach 2:
The patent transitions from one-dimensional individual resonator control to two-dimensional group control by organizing antenna resonators into a grid structure controlled by row and column voltage lines. This dimensional organization allows the system to control N×M resonators using only N+M voltage lines, reducing complexity while maintaining control precision through the two-dimensional addressing scheme
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 significantly reduces the amount of voltage information needed to control the beam scanning apparatus, enhancing efficiency and simplifying the system while maintaining effective phase control of reflected light, thereby improving scanning performance and reducing operational complexity.
Implementation Method 1
a plurality of antenna resonators 10 disposed two-dimensionally on a substrate 101
Implementation Method 2
Each of the plurality of driving voltages in the row direction and each of the plurality of driving voltages in the column direction may be in a range between 0 volts and a threshold voltage, and wherein the threshold voltage is a voltage at which a phase shift of reflected light by each of the plurality of antenna resonators is at a maximum
Data Source
AI summary
Provided is a beam scanning apparatus including a plurality of antenna resonators disposed two-dimensionally in a row direction and a column direction, a plurality of row voltage lines that are configured to provide a plurality of driving voltages in a row direction, respectively, a plurality of column voltage lines that are configured to provide a plurality of driving voltages in a column direction, respectively, and a driving voltage conversion circuit configured to control a driving voltage applied to each of the plurality of antenna resonators based on a driving voltage in the row direction that is provided from each of the plurality of row voltage lines and a driving voltage in the column direction that is provided from each of the plurality of column voltage lines.