Planar Multi-Antenna Module Layout for Tri-Band Signal Isolation
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Solution Overview
Problem
Traditional tri-band antennas are large, complex, and costly, with high assembly risks and signal interference issues, especially in miniaturized electronic devices supporting multiple frequency bands.
Innovation Solution
A multi-antenna module system integrating first, second, and third antenna modules on a substrate, with adjustable frequency bands and polarization directions, reducing interference through specific placement and impedance matching, and using 50-ohm cables for signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional tri-band antenna is used to support multiple frequency bands, then the bandwidth coverage is improved, but the antenna size and structural complexity increase
Solution Approach 1:
The patent divides the antenna system into multiple independent planar antenna modules, each designed for a specific frequency band. Instead of using a single complex three-dimensional antenna structure, the invention segments the functionality across multiple simple planar modules that can be independently designed, manufactured, and assembled, thereby reducing overall structural complexity while maintaining multi-band capability.
Solution Approach 2:
The patent transitions from three-dimensional antenna structures to two-dimensional planar antenna modules. This dimensional reduction simplifies the antenna design by eliminating the need for complex 3D geometries while maintaining the required electrical performance through optimized planar configurations, thereby reducing structural complexity.
2Adaptability or versatility
If a traditional tri-band antenna is used to support multiple frequency bands, then the bandwidth coverage is improved, but the manufacturing and assembly costs increase
Solution Approach 1:
By segmenting the antenna system into standardized planar modules, each module can be manufactured using simpler and more cost-effective processes. The modular design allows for independent fabrication of each frequency band module, enabling optimized manufacturing routes for each module type and reducing overall production costs compared to a single complex three-dimensional antenna.
Solution Approach 2:
The patent changes the fundamental geometric parameters of the antenna design from three-dimensional to two-dimensional planar structures. This parameter change enables the use of simpler manufacturing techniques such as planar printing or lamination processes instead of complex molding or machining operations, thereby reducing manufacturing and assembly costs.
3Quantity of substance
If multiple antennas are squeezed into a limited area for MIMO application, then the antenna quantity is increased, but signal interference between antennas occurs
Solution Approach 1:
The patent utilizes the planar two-dimensional configuration to optimize the spatial arrangement of multiple antenna modules. By arranging the antenna modules in a flat distribution pattern on the substrate, the design maximizes the separation distance between adjacent antennas within the available area, thereby reducing near-field coupling and signal interference while maintaining MIMO functionality.
4Reliability
If a three-dimensional antenna structure is used, then the antenna functionality is achieved, but the risk of deformation increases
Solution Approach 1:
The patent employs two-dimensional planar antenna modules instead of three-dimensional structures. This dimensional reduction inherently increases structural stability because planar structures have fewer protruding parts and less complex geometries that could be susceptible to deformation during handling, assembly, or operation. The flat configuration of each module makes them more robust and less prone to mechanical damage.
Solution Approach 2:
By segmenting the antenna system into multiple independent planar modules, each module can be individually reinforced or supported during assembly. The modular design allows for separate mounting and positioning of each module, reducing the mechanical stress and deformation risk on any single module compared to a monolithic three-dimensional structure.
Data Source
AI summary
A multi-antenna module system includes a substrate, a plurality of first antenna modules, a plurality of second antenna modules, and a plurality of third antenna modules. The substrate has an opening. The first antenna modules are respectively disposed on the substrate and located on two opposite first sides and two opposite second sides for transmitting and receiving a first frequency band signal. The second antenna modules are respectively disposed on the substrate and located on two opposite third sides for transmitting and receiving a second frequency band signal. The third antenna modules are respectively disposed on the substrate and located on two opposite third sides and two opposite fourth sides for transmitting and receiving a third frequency band signal. The second antenna modules and the third antenna modules are respectively located between the first antenna modules.