RF Noise Reduction System Using Phase Inversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
As the number of interfaces within a hardware enclosure increases, controlling and containing electromagnetic emissions becomes challenging, especially with rising traffic rates and shorter RF wavelengths, leading to significant radiation leakage, which can be difficult to mitigate with existing solutions like enclosure gaskets and shielding.
Innovation Solution
A radio frequency (RF) noise reduction system comprising a first antenna, a phase shifter, an amplitude detector, and a microcontroller that generates a phase shifted RF signal to identify and minimize the RF envelope by controlling the phase shifter, thereby reducing RF emissions through a second antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional solutions like enclosure gaskets and shielding are used to reduce RF emissions, then RF leakage is mitigated to some extent, but the cost increases and the solutions may still be inadequate for meeting regulatory standards
Solution Approach 1:
The patent converts harmful RF emissions into a beneficial effect by using the emitted RF energy itself to generate a canceling signal. The system captures RF leakage through an antenna, processes it through a phase shifter and amplifier, and re-transmits it with inverted phase to neutralize the original emission, thereby transforming the harmful radiation into a solution for its own mitigation.
Solution Approach 2:
The patent introduces an intermediary signal processing system consisting of an antenna, phase shifter, amplifier, and control unit. This intermediary system captures the RF emissions, modifies their phase by 180 degrees, amplifies them, and re-transmits them as a canceling signal, serving as a mediator between the RF source and the external environment to achieve emission reduction.
2Adaptability or versatility
If the number of interfaces and traffic rates within an enclosure increase, then functionality and performance improve, but RF radiation leakage becomes more difficult to control and contains
Solution Approach 1:
The patent implements a feedback mechanism where RF emissions are continuously monitored by an antenna, processed through a phase shifter and amplifier, and the corrected signal is re-transmitted to counteract the original emissions. The control unit adjusts the phase and amplitude dynamically based on the detected RF signal characteristics, creating a closed-loop system that adapts to varying emission levels from multiple interfaces and high traffic rates.
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 system effectively reduces RF noise within and escaping the enclosure by identifying and adjusting the phase shift to achieve a minimum RF envelope, helping to comply with regulatory standards and minimize emissions leakage.
Implementation Method 1
a phase shifter coupled to the first antenna for generating a phase shifted RF signal
Implementation Method 2
a transmitting antenna coupled to the phase shifter and being configured to transmit the phase shifted RF signal
Data Source
AI summary
A radio frequency (RF) noise reduction system is disclosed to include a first antenna for receiving a RF signal, a phase shifter coupled to the first antenna for generating a phase shifted RF signal, and an amplitude detector coupled to the first antenna for outputting a signal representative of an amplitude of the RF signal. Additionally, the RF noise reduction system includes a microcontroller coupled to the amplitude detector for controlling the phase shifter. Still yet, the RF noise reduction system includes a second antenna coupled to the phase shifter and being configured to transmit the phase shifted RF signal.