Configurable RF Surface for Interference-Aware Signal Propagation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radio frequency (RF) systems with large antenna arrays face challenges such as size constraints, high cost, and power requirements, as well as interference from environmental factors, which disrupt signal transmission and reception, especially in IoT devices and outdoor environments.
Innovation Solution
A surface with configurable RF elements, such as thin conductive sections and switches, is used to control RF signal propagation by reflecting, absorbing, or allowing signals to pass through, enhancing reception quality through a controller that determines optimal configurations based on signal quality measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large antenna arrays are used to improve signal localization and reduce interference, then signal quality and transmission precision are improved, but device size, cost, and power requirements increase
Solution Approach 1:
The patent introduces a surface with configurable elements as an intermediary between the transmitter and receiver. This surface reflects and directs RF signals to create constructive propagation paths, enabling signal quality improvement without requiring large antenna arrays at the communication devices themselves. The surface acts as a mediator that shapes signal propagation in the environment.
Solution Approach 2:
The patent moves the signal control function from the device dimension (antenna arrays at transmitter/receiver) to the environmental dimension (configurable surface in the propagation path). By controlling signal reflection and propagation in the three-dimensional space between devices, the system achieves beamforming and interference reduction effects without increasing device size.
2Measurement precision
If large antenna arrays are used to improve signal localization, then transmission precision is improved, but cost and power requirements increase
Solution Approach 1:
The configurable surface serves as an intermediary that performs signal direction and focusing functions externally. The surface elements are controlled to reflect signals along precise paths, achieving accurate signal localization and beamforming without requiring complex, power-intensive antenna arrays and signal processing circuitry at the communication devices.
Solution Approach 2:
The patent replaces the mechanical/electrical system of large antenna arrays with an electromagnetic reflection-based system. By using the configurable surface to reflect and direct RF signals, the system achieves precise signal localization through environmental control rather than through complex device-based antenna systems, reducing power consumption.
3Reliability
If environmental interference is addressed by using larger antenna arrays, then signal reception is improved, but device complexity and size increase
Solution Approach 1:
The configurable surface acts as an intermediary that actively manages environmental interference by creating controlled reflection paths. Instead of relying on complex device-based interference cancellation or large antenna arrays, the surface mediates signal propagation by directing signals around obstacles and through interfering environments, simplifying the receiver design.
Solution Approach 2:
The patent converts the environmental structures that cause interference (walls, surfaces, obstacles) into beneficial signal paths. By making surfaces configurable and controllable, previously harmful reflections and multipath effects are transformed into constructive signal paths that improve reception, eliminating the need for complex interference mitigation systems.
4Reliability
If configurable surface elements are added to control RF propagation, then signal quality is improved, but surface complexity and manufacturing difficulty increase
Solution Approach 1:
The configurable surface is divided into discrete, independently controllable elements. Each element can be individually configured to reflect, absorb, or transmit RF signals. This segmentation enables precise control of signal propagation paths while allowing the surface to be manufactured as a modular array of standardized elements, simplifying the manufacturing process compared to a monolithic configurable surface.
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 improves RF signal quality by creating constructive paths that enhance signal strength and reduce interference, allowing for effective RF transmission in both indoor and outdoor environments without increasing power consumption or system size.
Implementation Method 1
a surface may have a plurality of individually configurable elements that can be configured to reflect from, absorb in, or allow the RF signal to pass through the element
Implementation Method 2
a surface may have a plurality of individually configurable elements that can be configured to reflect from, absorb in, or allow the RF signal to pass through the element
Data Source
AI summary
A configurable radio frequency device includes a surface and a plurality of configurable radio frequency elements disposed on the surface. The radio frequency elements can be configured to absorb, reflect, or pass a radio transmission. A controller is configured to control the configuration of the surface by setting the state of the radio frequency elements. The controller also determines a deployment configuration for the surface by applying a series of test configurations to the surface and receiving a measurement of signal quality as measured by a receiver. The controller can then use these measurements to determine how to set the states of the radio frequency elements for the deployment configuration.