Waveguide Antenna Module Layout for Compact Multi-Band Isolation
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Solution Overview
Problem
Existing multi-band antennas face challenges in achieving reduced dimensions and good radiation efficiency while maintaining effective antenna-to-antenna isolation, particularly in miniaturized wireless communication devices.
Innovation Solution
The antenna module incorporates a configuration with a ground radiator, first, second, and third radiators forming a waveguide structure, along with a fourth radiator, to excite multiple frequency bands, including WiFi 2.4G, 5G, and 6G frequencies, with asymmetrical design and specific geometric arrangements to enhance bandwidth and isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional antenna designs are used to support multiple frequency bands, then the antenna can excite multiple frequency bands, but the antenna dimension cannot be reduced and radiation efficiency deteriorates
Solution Approach 1:
The antenna structure is segmented into multiple independent radiators (first, second, third, and fourth radiators), each responsible for specific frequency bands. This segmentation allows each radiator to be optimized for its designated band while maintaining overall multi-band capability, enabling dimension reduction without sacrificing versatility.
Solution Approach 2:
The patent transitions from planar antenna designs to three-dimensional立体 structures with radiators arranged in multiple layers and orientations. This dimensional change enables better space utilization and electromagnetic field distribution, achieving compact size while maintaining multi-frequency performance and radiation efficiency.
2Volume of moving object
If antenna elements are placed closer together to reduce device size, then miniaturization is achieved, but antenna-to-antenna isolation deteriorates
Solution Approach 1:
The patent employs three-dimensional spatial arrangement of antenna elements, utilizing vertical stacking and multi-layer configurations. This dimensional approach allows close proximity in the device plane while maintaining adequate isolation through vertical separation and optimized spatial positioning, achieving miniaturization without compromising isolation performance.
Solution Approach 2:
Different regions of the antenna structure are designed with locally optimized properties - certain radiators are positioned and oriented specifically to maximize isolation from neighboring elements while maintaining their respective frequency band performance. This local optimization enables compact overall design with preserved isolation characteristics.
3Adaptability or versatility
If complex multi-band antenna structures are implemented, then multiple frequency bands can be excited, but radiation efficiency deteriorates
Solution Approach 1:
By dividing the multi-band antenna into separate radiators dedicated to specific frequency bands, each radiator can be optimized for maximum radiation efficiency at its designated frequencies. This avoids the energy losses associated with complex coupled structures, achieving high efficiency across multiple bands through simple, dedicated radiator designs.
Solution Approach 2:
The patent combines multiple simple radiator structures into a unified antenna system that achieves multi-band functionality. Each radiator is relatively simple in design but the collective arrangement provides comprehensive frequency coverage with high overall radiation efficiency, avoiding the complexity-induced losses of integrated multi-band designs.
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 enables the antenna module to meet requirements for multiple frequency bands, achieve miniaturized dimensions, and maintain good antenna-to-antenna isolation and radiation efficiency, outperforming conventional antennas in terms of signal transmission and radiation patterns.
Implementation Method 1
The first radiator and the second radiator are configured to excite a first high frequency band. The first radiator and the third radiator are configured to excite a second high frequency band.
Implementation Method 2
Each of the at least one antenna structure includes a ground radiator, a first radiator, a second radiator, and a third radiator configured to excite multiple frequency bands
Data Source
AI summary
An antenna module includes an antenna structure including ground, first, second, and third radiators. The ground radiator includes a main ground portion and a branch portion extending from one side of the main ground portion. The first radiator located on the one side of the main ground portion includes a feeding terminal. The second radiator is connected to the one side of the main ground portion. The first radiator is located between the branch portion and the second radiator. The main ground portion, the branch portion, and the first and second radiators together form a waveguide structure. The first and second radiators are configured to excite a first high frequency band. The third radiator is located on the one side of the main ground portion, connected to the first radiator, and located beside the branch portion. The first and third radiators are configured to excite a second high frequency band.