MIMO Antenna Arrays for 5G Sub-6GHz Devices
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Solution Overview
Problem
Modern electronic devices face challenges in integrating additional antennas for 5G technologies due to limited space on the Printed Circuit Board (PCB), requiring innovative antenna arrangements that do not interfere with existing hardware and can cover 3-5 GHz frequency bands.
Innovation Solution
The implementation of a multiple-input multiple-output (MIMO) antenna system with pairs of antennas, each having different physical configurations but operating within the same frequency range, strategically placed at the corners of the device's housing to minimize mutual coupling and optimize diversity gain without modifying the existing hardware layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional antennas are added to support 5G technologies, then frequency coverage capability is improved, but device space availability deteriorates
Solution Approach 1:
The patent combines multiple antenna functions into integrated MIMO antenna arrays where multiple antenna elements are closely spaced and coupled together. This merging approach allows the device to support multiple frequency bands and 5G technologies while using limited space efficiently, as the combined antenna structure replaces what would traditionally require separate antenna installations.
Solution Approach 2:
The patent transitions from planar PCB-mounted antennas to three-dimensional antenna structures that utilize vertical spacing and angular orientations. By arranging antenna elements in three-dimensional space with different tilt angles and spatial positions, the system achieves enhanced frequency coverage and MIMO performance without increasing the device's footprint area.
2Adaptability or versatility
If antenna layout is modified to accommodate additional antennas, then 5G functionality is improved, but manufacturing complexity deteriorates
Solution Approach 1:
The patent divides the antenna system into modular MIMO antenna arrays with standardized sub-units. Each antenna element and its associated feeding network are designed as repeatable modules that can be manufactured separately and then assembled into the final antenna array configuration. This segmentation enables standardized production processes and simplifies manufacturing while supporting complex 5G functionality.
3Area of stationary object
If antennas are placed closer together to save space, then space utilization is improved, but RF mutual coupling increases
Solution Approach 1:
The patent employs asymmetric antenna element designs within the MIMO arrays, where antenna elements have different orientations, lengths, and spatial positions rather than uniform symmetric arrangements. This asymmetry disrupts the coupling patterns between closely spaced elements, reducing harmful mutual coupling effects while maintaining compact form factors. The non-uniform distribution of antenna elements allows closer spacing without proportionally increasing interference.
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 achieves broad bandwidth, high efficiency, low correlation, and hybrid Wi-Fi and Bluetooth antenna applications, ensuring compatibility with previous technologies while maintaining high data throughput and reducing RF signal attenuation by the user's hand.
Implementation Method 1
each antenna including a first RF radiating member having a first frequency range and a second RF radiating member having a second frequency range
Data Source
AI summary
Antennas and MIMO antenna systems in a housing of an electronic device are described. Each of the antennas includes a first RF radiating member having a first frequency range and a second RF radiating member having a second frequency range. The first frequency range is 4-5 GHz and the second frequency range is 3-4 GHz, and each antenna has an operating frequency range of at least 3-5 GHz. A plurality of the antennas may be arranged in a housing of an electronic device to form MIMO antenna systems.