Power Amplifier Internal Optical Link for EMI Mitigation
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Solution Overview
Problem
Existing power amplifier systems face challenges with electrical cabling susceptibility to electromagnetic interference (EMI), increased complexity, latency, and weight, which affect reliability and performance.
Innovation Solution
Implementing an internal optical communication link using optical fibers and SerDes interfaces to connect components within the power amplifier system, reducing EMI susceptibility and latency while simplifying assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical cabling is used for internal communication, then the system can be simpler to implement, but the system becomes susceptible to electromagnetic interference and experiences increased latency
Solution Approach 1:
The patent replaces electrical cabling (electromagnetic system) with optical fiber communication (optical system) for internal signal transmission within the power amplifier. This substitution eliminates susceptibility to electromagnetic interference while maintaining communication functionality between components such as the controller, driver, and final stage amplifiers.
Solution Approach 2:
The patent introduces optical fibers as an intermediary medium for signal transmission between internal components. Optical converters transform electrical signals to optical signals for transmission through the optical fiber, serving as a mediator that isolates the communication channel from electromagnetic interference while enabling reliable data exchange.
2Reliability
If electrical cabling is used for internal communication, then the implementation is simpler, but the system experiences increased latency
Solution Approach 1:
The patent substitutes electrical signal transmission with optical signal transmission through optical fibers. Optical signals travel at the speed of light, providing lower latency compared to electrical signals in copper cables, thereby improving real-time communication performance between the controller and amplifier stages.
3Device complexity
If electrical cabling is used for internal communication, then the system structure is simpler, but the system weight increases
Solution Approach 1:
The patent replaces heavy electrical cabling with lighter optical fiber cables for internal communication. Optical fibers have significantly lower density and weight compared to copper cables, reducing the overall system weight while maintaining communication capabilities between power amplifier components.
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
Optical communication enhances reliability and performance by minimizing EMI, reducing latency, and simplifying the system design, thereby improving overall system robustness and ease of maintenance.
Implementation Method 1
Implementing an internal optical communication link using optical fibers and SerDes interfaces to connect components within the power amplifier system
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
Techniques for implementing an internal optical communication link in a power amplifier system are disclosed. In one embodiment, the techniques may be realized as a power amplifier system that includes a panel, an optical link, and a controller. The panel includes a plurality of signal endpoints and a first optical interface, the first optical interface being coupled to each of the plurality of signal endpoints. The optical link is coupled to the first optical interface. The controller is configured to manage operation of the power amplifier system and is coupled to the optical link via a second optical interface. The controller communicates with each of the plurality of signal endpoints over the optical link.