Antenna Module Waveguide Structure for Compact Multi-Band Isolation
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Solution Overview
Problem
Existing multi-band antennas face challenges in achieving reduced dimensions and maintaining good radiation efficiency while ensuring adequate antenna-to-antenna isolation, which is crucial for miniaturized wireless communication devices.
Innovation Solution
The antenna module incorporates a unique configuration of radiators and ground portions forming waveguide structures, including a main ground radiator, branch radiator, first radiator with a feeding terminal, and additional radiators to excite multiple frequency bands, with specific geometric arrangements to enhance bandwidth and isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radiators are added to excite multiple frequency bands, then frequency band coverage is improved, but antenna structure complexity increases
Solution Approach 1:
The patent combines multiple radiator functions into a single integrated antenna structure. The first, second, third, and fourth radiators are merged with the ground radiator to form a unified waveguide structure, allowing multiple frequency bands to be excited through one integrated antenna rather than separate antennas, thus reducing overall structural complexity while maintaining multi-band capability
Solution Approach 2:
The antenna structure is segmented into multiple functional radiators (first, second, third, and fourth radiators) each responsible for specific frequency bands. This segmentation allows independent optimization of each radiator's geometry and position to achieve desired frequency band coverage while keeping the overall structure organized and manageable
2Volume of moving object
If antenna dimension is reduced for miniaturization, then device size is improved, but radiation efficiency deteriorates
Solution Approach 1:
The patent transitions from traditional planar antenna layouts to a three-dimensional waveguide structure. By utilizing vertical and lateral dimensions simultaneously, the antenna achieves compact footprint while maintaining effective radiating paths through the waveguide configuration, thus reducing overall dimension without sacrificing radiation efficiency
Solution Approach 2:
The radiators are nested within and around the ground radiator structure, with the first, second, third, and fourth radiators positioned in relation to the ground radiator's main ground portion and branch portion. This nesting allows compact arrangement of multiple radiating elements within a small volume while maintaining their individual radiating functions
3Volume of moving object
If radiators are placed close together for compact design, then antenna dimension is improved, but antenna-to-antenna isolation deteriorates
Solution Approach 1:
The ground radiator acts as an intermediary structure between the multiple radiators. The main ground portion and branch portion are strategically positioned to provide electromagnetic isolation between the first, second, third, and fourth radiators, reducing mutual coupling and interference while allowing compact placement of the radiators in three-dimensional space
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 allows the antenna module to efficiently cover multiple frequency bands (e.g., WiFi 2.4G, 5G, and 6G) with improved antenna-to-antenna isolation and radiation efficiency, outperforming conventional designs 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
Implementation Method 2
The first radiator and the third radiator are configured to excite a second high frequency band
Data Source
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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.