5G Mobile Terminal Antenna Heat Dissipation Structure
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Solution Overview
Problem
In 5G antenna structures, the adjacent placement of integrated circuits (ICs) and antennas for improved heat dissipation leads to radiation interference, as conventional heat dissipation methods block the antenna's radiation.
Innovation Solution
A heat dissipation structure combining a graphite or metal heat dissipation sheet with a dielectric material, such as aluminum nitride or boron nitride, is used, where the heat dissipation sheet is partially removed to form an opening over the antenna, allowing radiation to pass through while maintaining effective heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat dissipation sheet is disposed to cover the IC in 5G antenna structure, then heat dissipation performance is improved, but the antenna radiation is blocked
Solution Approach 1:
The heat dissipation sheet is segmented by forming openings at specific positions corresponding to the antenna elements. This segmentation allows the heat dissipation sheet to cover the IC for heat dissipation while creating radiation paths for the antenna elements to function without blocking
Solution Approach 2:
The heat dissipation sheet has different properties at different locations: areas covering the IC provide heat dissipation function, while areas with openings at antenna element positions provide radiation transmission function. This local differentiation resolves the contradiction between heat dissipation and radiation blocking
2Loss of energy
If IC and antenna are arranged adjacent to each other, then path loss is reduced, but heat dissipation becomes difficult without blocking antenna radiation
Solution Approach 1:
The heat dissipation sheet is divided into functional zones through openings, allowing simultaneous achievement of adjacent IC-antenna arrangement for reduced path loss and effective heat dissipation through the segmented structure that doesn't block radiation
Solution Approach 2:
The heat dissipation sheet acts as an intermediary component between the IC and the external environment, with strategically positioned openings that mediate between the need for heat dissipation from the IC and the need for unobstructed radiation from the adjacent antenna elements
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 solution enables efficient heat dissipation without obstructing the antenna's radiation, enhancing the performance of both heat dissipation and antenna functionality in 5G mobile terminals.
Implementation Method 1
a heat dissipation sheet attached to an inner surface of the base to dissipate heat generated in the IC
Implementation Method 2
a dielectric disposed to cover the opening and formed of a dielectric material to allow radio signals from the patch antennas to be radiated to the outside of the case
Data Source
AI summary
A mobile terminal includes patch antennas forming an array, an integrated circuit (IC) controlling transmission and reception of radio signals of the patch antennas, and a case disposed to cover the IC, wherein the case includes: a base forming an appearance, a heat dissipation sheet attached to an inner surface of the base to dissipate heat generated in the IC and having an opening corresponding to the patch antennas, and a dielectric disposed to cover the opening and formed of a dielectric material to allow radio signals from the patch antennas to be radiated to the outside of the case.