Antenna Matching Block for Multi-Band Isolation
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Solution Overview
Problem
In electronic devices with multiple antennas, securing isolation between antennas and optimizing resonance in specific frequency bands is challenging due to interference and difficulty in achieving desired frequency performance.
Innovation Solution
Incorporating a matching block connected with a ground area and a side of at least one antenna radiator, which uses an LC resonance circuit or a combination of inductors and capacitors to selectively interrupt or pass frequency signals, ensuring isolation and resonance optimization across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are implemented in a confined area, then wireless communication services in multiple frequency bands can be provided, but isolation between antennas deteriorates and radiation performance degrades due to interference
Solution Approach 1:
The patent divides the ground area into multiple separate ground regions, each associated with specific antennas operating in particular frequency bands. This segmentation allows different antenna groups to have dedicated ground areas, reducing mutual interference while maintaining multi-frequency band operation capability.
Solution Approach 2:
The patent introduces matching blocks as intermediary components between antennas and ground areas. These matching blocks serve as mediators that optimize the coupling between antennas and their designated ground regions, improving isolation between antenna groups while enabling resonance optimization in desired frequency bands.
2Adaptability or versatility
If multiple antennas are implemented in a confined area, then multi-band communication is enabled, but resonance optimization becomes difficult to achieve in desired frequency bands
Solution Approach 1:
The patent applies different ground area configurations and matching block designs to specific antenna groups based on their operating frequency bands. Each antenna or antenna group is provided with a ground area and matching components optimized for its specific frequency requirements, enabling precise resonance optimization in desired bands while maintaining multi-band capability.
3Reliability
If ground area is increased to improve radiation performance, then antenna isolation improves, but device size increases
Solution Approach 1:
The patent utilizes the third dimension (vertical direction) by configuring ground areas at different heights and positions within the device structure. Matching blocks are positioned to connect antennas with ground areas in a three-dimensional arrangement, allowing improved radiation performance and isolation without proportionally increasing the planar footprint of the device.
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 enhances isolation between antennas and allows for effective resonance in both low and high frequency bands, improving the overall radiation performance and signal transmission/reception efficiency.
Implementation Method 1
at least one matching block which connects with a ground area and with a side of at least one antenna radiator
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
An electronic device including a plurality of antennas is provided. The electronic device includes a first radiator including at least one matching block that is connected with a ground area and at least one side of the first radiator. The first radiator is configured to transmit and receive a first frequency signal through a first antenna resonance length corresponding to a first area of the first radiator, and to transmit and receive a second frequency signal through a second antenna resonance length corresponding to a second area opposite to the first area. A second radiator is connected with the ground area and is configured to transmit and receive a third frequency signal through a third antenna resonance length corresponding to a third area adjacent to the first radiator.