Stacked Array Antenna Module With Integrated Heat Sinks
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Solution Overview
Problem
Conventional two-dimensional microwave antenna arrays lack a heat dissipation structure, which is necessary for managing the heat generated by amplifiers when transmitting high-frequency radio waves, such as those used in 5G and 6G mobile communication systems.
Innovation Solution
The array antenna module incorporates a housing with multiple layers of heat sinks and a holder for heat sinks, along with substrates and amplifiers connected to heat sinks through thermally conductive adhesive layers, allowing efficient heat dissipation from the amplifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If amplifiers are added to extend communication range, then communication range is improved, but heat generation increases requiring heat dissipation structures
Solution Approach 1:
The patent transitions from conventional planar heat dissipation to a three-dimensional stacked architecture where multiple antenna arrays are arranged in layers. Heat sinks are integrated between substrates in the vertical dimension, enabling heat dissipation pathways that do not interfere with the planar antenna radiation patterns. This dimensional transition allows simultaneous achievement of extended communication range through multiple amplifiers and effective heat management.
Solution Approach 2:
The patent implements nesting by placing heat sinks within the stacked structure between substrates, and integrating amplifiers on substrate surfaces. The heat sinks are nested within the overall antenna module architecture, utilizing the vertical space between radiation elements. This nested arrangement allows heat dissipation components to be incorporated without increasing the planar footprint, thereby maintaining compact form factor while managing heat from high-power amplifiers.
2Length of moving object
If multiple antenna arrays are stacked to reduce pitch, then antenna pitch is reduced, but heat dissipation becomes more critical
Solution Approach 1:
By stacking antenna arrays in the vertical dimension, the patent reduces the planar pitch between antenna elements while distributing heat generation across multiple layers. Heat sinks are positioned between substrates to provide thermal management for each stacked layer independently, preventing heat accumulation that would result from reduced pitch arrangements.
Solution Approach 2:
The patent divides the antenna system into multiple independent stacked layers, each with its own amplifiers and heat sinks. This segmentation allows heat to be dissipated locally at each layer rather than accumulating in a single dense structure. The modular stacked architecture enables reduced pitch while maintaining heat dissipation efficiency through distributed thermal management.
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 effectively dissipates heat generated by amplifiers, enabling efficient operation of high-frequency radio wave transmission while allowing for multi-tier integration and reduced antenna pitch, thereby enhancing communication range and reducing interference.
Implementation Method 1
amplifiers connected to heat sinks through thermally conductive adhesive layers, allowing efficient heat dissipation from the amplifiers
Data Source
AI summary
An array antenna module includes a housing including heat sinks, and a holder configured to hold the heat sinks, substrates provided between the heat sinks, where each substrate has an edge, antennas configuring an array antenna, where at least one antenna is provided on each substrate and the antennas are arranged at positions where radio waves are radiated from edges of the substrates toward an outer side of the substrates, and amplifiers provided on each substrate and electrically connected to the antennas. Each amplifier has a first surface provided on one substrate and a second surface opposite to the first surface and connected to one heat sink.


