RIS Phase Control Architecture for Modular Low-Power Radiator Arrays
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Solution Overview
Problem
Conventional RIS units have limitations in versatility and flexibility due to integral manufacturing of radiators and phase shifters, requiring redesign for size adjustments, and high power consumption.
Innovation Solution
A control apparatus for RIS units that includes a voltage determination module, voltage fixing module, and phase shifting module, allowing phase control of multiple radiators with a single control module, and reduces power consumption by using two power supply voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If radiators and phase shifters are manufactured integrally with separate bias controllers, then manufacturing precision is improved, but device complexity and versatility deteriorate due to individual manufacturing requirements and redesign needs for size adjustments
Solution Approach 1:
The control apparatus is segmented into modular components: voltage determination module, voltage fixing module, and phase shifting module. Each module performs a specific function and can be independently configured, allowing the system to be adapted to different sizes and applications without complete redesign.
Solution Approach 2:
The control apparatus is designed with universal functionality to control multiple radiators through a single unified system. The modular architecture allows the same basic design to be scaled for different configurations, eliminating the need for individual bias controllers for each phase shifter and enabling versatile deployment across various RIS unit sizes.
2Manufacturing precision
If individual bias controllers are manufactured for each phase shifter, then manufacturing precision is improved, but device complexity increases due to multiple separate control components
Solution Approach 1:
Multiple bias control functions are merged into a single control apparatus that uses voltage determination and voltage fixing modules to generate and store control voltages for multiple phase shifters. This consolidation reduces the number of separate bias controllers needed while maintaining precise control over each phase shifter through shared voltage generation and storage mechanisms.
3Manufacturing precision
If circuit redesign is performed for each size configuration, then manufacturing precision is maintained, but productivity deteriorates due to repeated redesign processes
Solution Approach 1:
The control apparatus employs dynamic voltage control through the voltage fixing module that can store and retrieve control voltages as needed. This dynamic approach allows the same circuit design to be used across different RIS unit sizes, with configuration changes achieved through voltage parameter adjustments rather than physical circuit redesign, significantly improving manufacturing efficiency.
4Reliability
If continuous power supply is provided to control module, then reliability is improved, but energy consumption increases
Solution Approach 1:
The voltage fixing module operates by periodically charging capacitors with control voltages only when needed, rather than maintaining continuous power flow. The capacitors store the voltages between updates, allowing the control module to maintain reliable phase control while consuming power only during voltage updates rather than continuously, thus reducing overall energy consumption while preserving control stability.
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
Enables high versatility and expandability by allowing size and shape changes without redesign, and reduces power consumption through selective voltage application.
Implementation Method 1
stores a plurality of phase control signals obtained by level-shifting each of the plurality of level determination signals
Implementation Method 2
a phase shifting module configured to adjust a phase of a signal received by each of a plurality of radiators according to the plurality of phase control signals
Data Source
AI summary
Provided are a Reconfigurable Intelligent Surface (RIS) unit, and a control apparatus and method thereof. The control apparatus includes a voltage determination module that is activated when a first power supply voltage is applied, receives serial data, and obtains a plurality of level determination signals, a voltage fixing module that is driven when a second power supply voltage is applied, and stores a plurality of phase control signals obtained by level-shifting each of the plurality of level determination signals transmitted from the voltage determination module, and a phase shifting module configured to adjust a phase of a signal received by each of a plurality of radiators according to the plurality of phase control signals.