Antenna Heat Dissipation Module Using Phase-Change Vertical Cooling
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Solution Overview
Problem
Existing antenna systems face challenges in managing heat dissipation and weight reduction while maintaining directivity adjustment capabilities, particularly with the increasing number of antennas and RF components in massive MIMO technology.
Innovation Solution
A heat dissipation device and module that includes a heat receiving part and a heat discharging part, utilizing phase-changing refrigerant and heat sink fins to effectively dissipate heat and prevent weight increase, with a design that extends beyond the housing body for enhanced heat exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of antennas and RF components is increased to expand coverage in massive MIMO technology, then channel capacity and coverage are improved, but heat generation and weight increase
Solution Approach 1:
The heat discharging part extends in the thickness direction (vertical dimension) beyond the housing body to access the heat exchange region, transforming the heat dissipation approach from horizontal surface expansion to vertical dimension utilization. This allows heat exchange without increasing the horizontal footprint or weight of the antenna unit.
Solution Approach 2:
The heat receiving part utilizes phase-changing refrigerant (liquid-gas transition) to absorb and transport heat generated by RF components. The refrigerant evaporates at the heat receiving part and condenses at the heat discharging part, efficiently transferring heat away from sensitive components without requiring heavy heat sinks.
2Temperature
If heat dissipation surface area is increased to improve heat dissipation performance, then heat dissipation efficiency is improved, but device size and weight increase
Solution Approach 1:
The invention utilizes the thickness direction (vertical dimension) for heat exchange by extending the heat discharging part beyond the housing body's upper surface. This dimensional shift allows the heat dissipation system to achieve effective heat exchange area without increasing the horizontal dimensions or weight of the antenna unit.
Solution Approach 2:
The heat exchange function is extracted from the housing body structure and implemented as a separate heat dissipation device with its own heat receiving part and heat discharging part. This modular approach allows heat exchange to occur in the external heat exchange region without adding weight to the main antenna unit structure.
3Temperature
If heat dissipation surface area is increased to improve heat dissipation performance, then heat dissipation efficiency is improved, but device complexity increases
Solution Approach 1:
The heat receiving part and heat discharging part are integrally formed as a single heat dissipation device, simplifying the overall structure. The refrigerant flow passage is continuously formed within the integral structure, eliminating the need for separate connections and reducing structural complexity while maintaining effective heat dissipation performance.
4Weight of stationary object
If the antenna unit is made smaller and lighter for cost and installation considerations, then installation cost and portability are improved, but heat dissipation capability deteriorates
Solution Approach 1:
The heat discharging part extends in the vertical thickness direction beyond the housing body to access the heat exchange region. This vertical extension provides sufficient heat exchange area without increasing the horizontal footprint or weight of the antenna unit, enabling effective heat dissipation in compact designs.
Solution Approach 2:
The phase-changing refrigerant provides high heat absorption capacity in a compact form. The refrigerant evaporates at the heat receiving part and condenses at the heat discharging part, enabling efficient heat transfer without requiring large or heavy heat dissipation structures.
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 solution improves on-site workability by effectively dissipating heat and preventing weight increase, while overcoming limitations in heat conductivity and expanding the heat dissipation surface area.
Implementation Method 1
a heat receiving part that collects heat generated from heating substances; the heat receiving part may be a heat pipe filled with refrigerant that flows while changing phases
Implementation Method 2
a heat discharging part that performs heat exchange by diffusing the heat collected by the heat receiving part and is formed to occupy a part of a heat exchange region
Implementation Method 3
the heat receiving part may be a heat pipe filled with refrigerant that flows while changing phases, and the heat discharging part may be a vapor chamber filled with refrigerant that flows while changing phases
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
Provided are a heat dissipation device, a heat dissipation module, and an antenna apparatus including the same. The heat dissipation device includes a heat receiving part that collects heat generated from heating substances and a heat discharging part that performs heat exchange by diffusing the heat collected by the heat receiving part and is formed to occupy a part of a heat exchange region in such a manner that at least a tip of the heat discharging part extends to the heat exchange region on an outer side of the housing body provided with the heating substances, thereby enabling active heat exchange in the heat exchange region and facilitating expanded design of a heat dissipation surface area and thus providing the advantage of improving heat dissipation performance.