Modular Radio Assembly Interconnects for Low-PIM 5G Cabling
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Solution Overview
Problem
Existing radio assemblies for 5G wireless products lack modular building practices for antenna branch count flexibility, leading to unmanageable cable configurations and increased costs, and suffer from passive intermodulation (PIM), electromagnetic interference (EMI), and interference from non-linear components.
Innovation Solution
A radio assembly with modularized radios and interconnects, featuring a cable channel with a heatsink, cable bridge, and standoffs to minimize PIM, using non-hardened cables and blind-mate press-fit connections for EMI resistance, allowing easy scaling and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radio units are integrated into a single radio assembly, then functional integration and space utilization are improved, but heat dissipation becomes more difficult and temperature control deteriorates
Solution Approach 1:
The radio assembly is divided into multiple independent radio units, each with its own heat dissipation characteristics. The housing is segmented into multiple compartments that can be independently ventilated, allowing heat management for each unit while maintaining overall integration.
2Volume of moving object
If radio units are tightly integrated into a compact assembly, then space utilization is improved, but airflow for cooling is restricted and heat dissipation worsens
Solution Approach 1:
Ventilation channels are designed to utilize three-dimensional space within the housing, creating airflow paths that move through multiple dimensions rather than simple linear paths. This allows efficient cooling without increasing the external footprint of the assembly.
3Ease of manufacture
If fixed radio units are used in the assembly, then manufacturing simplicity is improved, but adaptability to different configurations deteriorates
Solution Approach 1:
The radio units are designed with movable and adjustable characteristics, allowing them to be repositioned and reconfigured within the housing. Mounting structures enable dynamic adjustment of unit positions while maintaining secure installation, providing flexibility without complicating the basic manufacturing process.
4Ease of repair
If modular radio units with individual housings are used, then ease of replacement and maintenance is improved, but device complexity increases
Solution Approach 1:
The assembly is segmented into standardized modular units with uniform interfaces and mounting mechanisms. This segmentation allows individual units to be easily removed and replaced while maintaining a relatively simple overall structure through repetition of standardized components.
Solution Approach 2:
Standardized mounting structures and interfaces are designed to be universal across all radio unit types in the assembly. This universality simplifies the overall design by using the same mechanisms for multiple purposes, reducing complexity despite the modular nature of the units.
Data Source
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AI summary
A radio assembly is provided. The radio assembly includes at least one radio module and a radome. The radio module has a heatsink disposed on one side and a radio module base on the other side thereof. The radio module base is disposed between the heatsink and the radome. The heatsink defines a cable channel for routing at least one power cable and at least one data cable.