Antenna Module With Heat Dissipation Slot
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Solution Overview
Problem
The compact design of modern portable electronic devices limits antenna placement, reducing signal processing efficiency and increasing interference between antennas, leading to decreased transmission speed and reliability due to reduced isolation and space constraints.
Innovation Solution
An antenna module is integrated with a heat dissipation unit featuring slots with bending portions, allowing the antennas to be positioned away from the circuit board and creating electromagnetic shielding to enhance isolation between them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If antennas are placed closer together to reduce device volume, then device compactness is improved, but antenna isolation decreases leading to increased interference
Solution Approach 1:
A ground structure with bending portions is introduced as an intermediary element between the first and second antennas. This ground structure acts as a mediator to provide electromagnetic shielding and improve isolation between the antennas, allowing them to be placed closer together without sacrificing performance.
Solution Approach 2:
The ground structure utilizes three-dimensional bending portions that extend in multiple directions, creating electromagnetic shielding in vertical and lateral dimensions. This multi-dimensional approach to shielding allows for better isolation within a compact footprint, resolving the contradiction between small volume and adequate isolation.
2Weight of moving object
If antenna placement space is reduced due to lighter and thinner device design, then device portability is improved, but transmission speed and signal quality deteriorate
Solution Approach 1:
The ground structure with bending portions serves as an intermediary shielding element that enables compact antenna placement while maintaining transmission performance. By providing effective electromagnetic isolation, it allows antennas to be positioned in limited space without suffering from mutual interference that would otherwise reduce transmission speed.
3Length of stationary object
If antennas are positioned closer together, then device thickness is reduced, but mutual interference between antennas increases
Solution Approach 1:
The ground structure with its bending portions is positioned between the antennas to provide electromagnetic shielding. This intermediary structure blocks the harmful electromagnetic fields from one antenna from reaching the other, thereby reducing mutual interference even when the antennas are placed close together in a thin device profile.
Solution Approach 2:
The bending portions of the ground structure create electromagnetic shielding barriers in multiple spatial dimensions, not just horizontally. By utilizing vertical and lateral dimensions for shielding, the design achieves effective interference reduction within a reduced thickness constraint.
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 configuration improves antenna isolation, reduces mutual interference, and allows for a more compact device design by optimizing electromagnetic wave disturbance and capacitive loading, achieving better communication quality and reduced volume occupancy.
Implementation Method 1
a heat dissipation unit contacted with at least one heat source of the portable electronic device
Implementation Method 2
heat dissipation unit
Implementation Method 3
the heat dissipation unit includes at least one slot, the slot includes at least one bending portion, and an orthogonal projection of the at least one of the first antenna and the second antenna on a projection plane of the heat dissipation unit is partly overlapped with an orthogonal projection of the slot on the projection plane
Data Source
AI summary
An antenna module suited for a portable electronic device is provided. The antenna module includes a heat dissipation unit, a first antenna and a second antenna. The heat dissipation unit contacts a heat source of the portable electronic device. The first antenna and the second antenna are disposed at different side portions of the heat dissipation unit. The heat dissipation unit has a slot with at least one bending portion. An orthogonal projection of at least one of the first antenna and the second antenna on a projection plane of the heat dissipation unit is partly overlapped with an orthogonal projection of the slot on the projection plane.