Multi-band Antenna Element on PCB for Wideband Coverage
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Solution Overview
Problem
Existing antenna systems struggle to cover the wide range of LTE frequency bands from 450 MHz to 6 GHz efficiently, leading to communication bottlenecks and practical limitations in device size and manufacturing complexity.
Innovation Solution
The development of a multi-band antenna assembly that includes multiple antenna elements on PCB bases, each comprising a ground plane and radiating elements for low, mid, and high bands, allowing for comprehensive coverage of multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an antenna array of various antenna configurations is used to capture a greater portion of the LTE spectrum, then the frequency coverage is improved, but the device size and space requirements increase making it impractical for small devices
Solution Approach 1:
The patent combines multiple antenna configurations into a single integrated antenna structure. The antenna element incorporates multiple radiating elements with different geometries (e.g., meander line, fractal patterns, parasitic elements) that resonate at different frequency bands, allowing one antenna to perform the function of multiple antennas while maintaining a compact form factor suitable for small devices
Solution Approach 2:
The antenna design achieves multi-functionality by creating a single antenna element that can operate across multiple frequency bands (e.g., 700 MHz to 2.7 GHz and beyond). The antenna structure includes multiple radiating elements that can be independently excited to support different LTE bands, making the antenna universal for various wireless communication standards and frequency ranges
2Volume of moving object
If a single geometrically complex antenna is used to capture a greater portion of the LTE spectrum, then the device size is reduced, but the manufacturing complexity and cost increase
Solution Approach 1:
The antenna element is segmented into multiple discrete radiating elements (e.g., meander line segments, fractal branches, parasitic elements) that can be independently designed and optimized for specific frequency bands. This segmentation allows for modular manufacturing and simplifies the fabrication process compared to creating a single complex geometric structure, while still achieving wide frequency coverage through the combination of multiple simpler elements
3Adaptability or versatility
If an antenna array system is implemented to achieve wide frequency coverage, then the spectrum capture capability is improved, but the manufacturing cost and assembly difficulty increase
Solution Approach 1:
The patent merges multiple antenna functions into a single antenna element that can be manufactured as one integrated component. This consolidation eliminates the need for separate antenna arrays, reducing the number of parts, simplifying assembly processes, and lowering manufacturing costs while maintaining the capability to cover multiple frequency bands through the integrated multi-element structure
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 coverage of numerous 5G bands and reduces the complexity and cost of manufacturing, while maintaining a compact form factor suitable for small devices.
Implementation Method 1
radio antennas that are used for transmitting and receiving information via electromagnetic waves
Implementation Method 2
antennae that are configured to electromagnetically resonate at frequencies within the dedicated bandwidth
Data Source
AI summary
An antenna assembly can include a front cover and a back cover, the back cover configured to be coupled to the front cover. The antenna assembly can include a PCB base positioned between the front cover and the back cover. The antenna assembly can include a first multi-band antenna element formed on the PCB base, and a second multi-band antenna element formed on the PCB base. The first multi-band antenna element can include a first ground plane, one or more first low-band radiating elements, one or more first mid-band radiating elements, and one or more first high-band radiating elements. The second multi-band antenna element can include a second ground plane, one or more second low-band radiating elements, one or more second mid-band radiating elements, and one or more second high-band radiating elements.