Active RF Reflector Control for Signal Cancellation Null Spaces
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Solution Overview
Problem
In RF device networks, RF signals often interfere constructively or destructively due to multiple path propagation, necessitating a robust system for intelligent signal cancellation.
Innovation Solution
A method and system utilizing programmable active reflector devices to dynamically select and control reflector devices along optimized non-line-of-sight paths, employing dual-polarized antenna arrays for beam forming and phase shifting to create destructive interference and null spaces, thereby canceling interfering signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If RF signals are transmitted through multiple paths to overcome physical obstructions, then signal coverage is improved, but signal interference increases due to constructive and destructive interference
Solution Approach 1:
The patent converts the harmful effect of signal interference into a beneficial tool for signal cancellation. By using programmable active reflector devices to create controlled destructive interference, the system generates null spaces that actively cancel interfering signals, transforming the previously harmful interference phenomenon into a mechanism for improving signal quality and extending coverage area
Solution Approach 2:
The system dynamically adjusts phase and amplitude parameters of RF signals using programmable active reflector devices. By changing these parameters in real-time, the system optimizes signal paths and creates destructive interference patterns that cancel unwanted signals while maintaining coverage area
2Object-affected harmful factors
If programmable active reflector devices are used to create null spaces for signal cancellation, then signal interference is reduced, but device complexity increases
Solution Approach 1:
The programmable active reflector devices serve multiple functions: they reflect RF signals to extend coverage, dynamically adjust phase and amplitude for signal optimization, and create null spaces for interference cancellation. This multi-functionality reduces the need for separate dedicated devices for each function, thereby managing complexity while achieving multiple objectives
3Reliability
If dual-polarized antenna arrays are employed for beam forming and phase shifting, then signal cancellation effectiveness is improved, but manufacturing complexity increases
Solution Approach 1:
The system divides the antenna array into multiple independent programmable active reflector devices, each capable of individual control and adjustment. This segmentation allows for modular manufacturing and assembly, reducing overall manufacturing complexity while maintaining the effectiveness of dual-polarized beam forming and phase shifting capabilities
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
Effectively attenuates signal interference by creating null spaces, improving signal strength and reducing noise, especially in environments with physical obstructions.
Implementation Method 1
employing dual-polarized antenna arrays for beam forming and phase shifting
Implementation Method 2
employing dual-polarized antenna arrays for beam forming and phase shifting
Implementation Method 3
destructive interference occurs when the beams of RF signals are half a cycle out of phase
Data Source
AI summary
A system including a plurality of circuits in a first radio frequency (RF) device which are configured to control a plurality of reflector devices based on a set of criteria. The controlled plurality of reflector devices transmit a plurality of RF signals in a specified direction and a specified location of a second RF device within transmission range of the controlled plurality of reflector devices. The plurality of RF signals are transmitted in the specified direction and the specified location of a second RF device based on a request for signal cancellation. The request for the signal cancellation is based on a noise from the second RF device and the plurality of RF signals are cancelled in the specified direction and the specified location of the second RF device.