RRU Fiber Transceiver Thermal Pad Heat Sink Design
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Solution Overview
Problem
Remote radio units (RRUs) face performance degradation due to excessive heat generated by fiber optical transceiver modules, which affects the laser output power and signal quality, and reduces the lifespan of components.
Innovation Solution
The RRU design incorporates a fiber optical transceiver module with a heat transferring structure that physically attaches to an external heat sink, utilizing thermal pads and heat pipes to efficiently transfer heat away from the module and its components, thereby maintaining optimal operating conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fiber optical transceiver modules are densely packed in RRU to increase functionality, then productivity and capability are improved, but heat generation increases causing performance degradation and reduced reliability
Solution Approach 1:
The patent extracts the heat management function from the standard RRU design by introducing a dedicated heat dissipation structure that physically separates heat removal from the main functional components. This allows the transceiver modules to be densely packed for improved functionality while the extracted heat management system prevents performance degradation through active thermal control.
2Measurement precision
If fiber optical transceiver modules operate at high power to maintain signal quality, then transmission performance is improved, but heat generation increases reducing component lifespan
Solution Approach 1:
The patent converts the harmful effect of heat generation into a manageable parameter by implementing a heat dissipation structure that utilizes the thermal energy pathway. The high-power operation that generates heat is transformed into an controlled thermal management scenario where the heat flow is directed through thermal pads to heat sinks, allowing sustained high-performance operation without compromising component lifespan.
3Device complexity
If standard cooling methods are used within the RRU housing, then device complexity is minimized, but heat removal efficiency is insufficient leading to temperature rise
Solution Approach 1:
The patent introduces thermal pads as intermediary elements between the fiber optical transceiver modules and the heat sinks. These thermal pads serve as a simple yet effective mediator that bridges the thermal gap, enabling efficient heat transfer without requiring complex active cooling systems. This intermediary approach maintains low device complexity while achieving effective temperature control through enhanced thermal conduction pathways.
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 design enhances the overall system performance by maintaining the laser's output power and signal quality, extends the lifespan of components, and effectively manages heat in densely packed, high-temperature environments.
Implementation Method 1
a heat transferring structure adapted to transfer heat generated in the fiber optical transceiver module to a heat sink arranged outside the outer shell
Implementation Method 2
a Transmitter Optical Sub-Assembly, TOSA, arranged within the casing and being adapted to transmit light through the transmitter output
Data Source
AI summary
A remote radio unit, RRU, has an outer shell housing radio equipment and at least one fiber optical transceiver module. The fiber optical transceiver module comprises, a casing provided with an interface having a transmitter output, and a Transmitter Optical Sub-Assembly, TOSA, arranged within said casing, where said TOSA transmits light through said transmitter output. The fiber optical transceiver module is physically attached to a heat transferring structure adapted to transfer heat generated in said fiber optical transceiver module to a heat sink arranged outside said outer shell. The proposed technology also provides a fiber optical transceiver module comprising a casing provided with an interface having a transmitter output and a TOSA arranged within said casing and adapted to transmit light through said transmitter output, wherein said casing is further provided with thermal pads arranged on the surface of said casing, said thermal pads may connect to a thermal conductor.