Co-site Filter Bank for RF Interference Mitigation
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Solution Overview
Problem
Co-site interference among multiple RF transmitters and receivers located in close physical proximity is challenging to identify and mitigate due to complex signal interactions and the need for specialized expertise and equipment, often resulting in performance degradation and interference issues.
Innovation Solution
A method and system that utilize a computer processor to determine the necessity of RF filtering based on operating frequencies and transmitter power outputs, with a co-site filter bank dynamically controlling RF filters to selectively mitigate interference among transceivers, thereby reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple RF transmitters and receivers are located in close physical proximity, then communication coverage and system functionality are improved, but co-site interference occurs causing performance degradation
Solution Approach 1:
The patent introduces RF filters as intermediary components between transmitters and receivers. These filters selectively pass desired frequency signals while blocking interfering signals from other transceivers operating in close proximity. The filter bank system acts as a mediator that enables co-located transceivers to operate simultaneously without mutual interference, thus resolving the contradiction between achieving communication coverage through close placement and avoiding harmful interference effects.
Solution Approach 2:
The patent applies local quality by assigning specific frequency filtering characteristics to different spatial locations and transceiver pairs. Each transceiver in the co-located array is equipped with tailored RF filters optimized for its specific operating frequency and interference environment. This localized filtering approach allows each transceiver to maintain optimal performance while operating in close proximity to others, resolving the interference issue without sacrificing the benefits of dense deployment.
2Object-affected harmful factors
If RF filtering is manually configured to mitigate interference, then interference mitigation is achieved, but system complexity and expertise requirements increase
Solution Approach 1:
The patent implements self-service through an automated filter bank control system that autonomously selects and configures appropriate RF filters based on the operating frequencies of active transceivers. The system automatically calculates which filters are needed to mitigate interference between specific transceiver pairs and configures the filter bank accordingly without requiring manual intervention. This automation eliminates the need for specialized user expertise in interference analysis while maintaining effective interference mitigation, thus resolving the contradiction between achieving interference mitigation and reducing system complexity.
Solution Approach 2:
The patent employs feedback mechanisms where the control system continuously monitors the operating states of transceivers and dynamically adjusts the filter bank configuration in response to changing interference conditions. The system receives feedback about which transceivers are active and at what frequencies, then automatically selects the appropriate filter combination to mitigate interference. This closed-loop feedback approach simplifies the system for users by automating the complex task of interference management while maintaining optimal performance.
3Difficulty of detecting and measuring
If comprehensive analysis is performed to identify interference issues, then interference detection accuracy is improved, but time and resource requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring a bank of RF filters with known frequency characteristics and interference mitigation capabilities. Instead of performing comprehensive analysis when interference problems arise, the system has already prepared multiple filter options that can be quickly selected based on the current operating conditions. The control system automatically matches active transceiver frequencies with appropriate pre-characterized filters, eliminating the need for time-consuming real-time analysis while maintaining high detection and mitigation accuracy.
Solution Approach 2:
The patent implements dynamics through a dynamically reconfigurable filter bank system that can rapidly adapt to changing interference conditions. The system continuously monitors transceiver operating states and dynamically selects and switches between different filter configurations in real-time. This dynamic approach allows the system to maintain high interference detection accuracy by always using the most appropriate filters for current conditions, while minimizing analysis time through automated real-time adaptation rather than static pre-analysis or lengthy comprehensive studies.
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 identifies and mitigates co-site interference by automatically adjusting RF filtering, improving the operational stability of transceivers and reducing the complexity of interference detection and resolution for users.
Implementation Method 1
RF filtering is automatically selectively performed to mitigate the interference
Data Source
AI summary
System (201) for mitigating co-site interference includes a co-site filter bank (208) containing filters (2061, 2062, . . . 206n) which can be optionally selectively inserted in an antenna input/output path (2051, 2052, . . . 205n) of two or more transceivers (2041, 2042, . . . 204n). A control system (900) receives information concerning the transceivers. Based on the information, the control system determines whether optional RF filtering should be used to limit RF signals which are communicated to or from the transceivers so as to mitigate co-site interference.