Antenna Isolation Element for Multi-Band Wireless Devices
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Solution Overview
Problem
In electronic devices with multiple antennas, securing isolation between antennas in a limited space is challenging, leading to deteriorated radiation performance due to interference and suboptimal resonance formation in desired frequency bands.
Innovation Solution
Incorporating an isolation element, such as a capacitance or inductance element, adjacent to one antenna to connect it to the ground, which selectively isolates the antenna from adjacent antennas, improving radiation efficiency by managing impedance characteristics across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are disposed in a limited space of the electronic device, then the electronic device can provide various wireless communication services, but it is difficult to secure isolation between antennas leading to deteriorated radiation performance
Solution Approach 1:
The patent introduces an isolation element as an intermediary component positioned between adjacent antennas. This isolation element acts as a mediator that blocks or reduces electromagnetic interference between antennas while allowing both antennas to function within the limited space. The isolation element includes a first isolation part and a second isolation part that extend between the antennas to create electromagnetic shielding.
Solution Approach 2:
The patent divides the isolation structure into multiple segments - a first isolation part and a second isolation part - that can be separately positioned and configured between different antenna pairs. This segmentation allows for targeted isolation of specific antenna interfaces while maintaining overall system compactness and enabling independent optimization of each isolation segment.
2Adaptability or versatility
If multiple antennas are disposed in a limited space, then various wireless services can be provided, but interference occurs between antennas making it difficult to optimize resonance formation in desired frequency bands
Solution Approach 1:
The isolation element serves as a mediator that prevents harmful electromagnetic coupling between antennas, thereby creating a cleaner electromagnetic environment for each antenna to establish its desired resonance. By blocking interference paths, the isolation element enables easier resonance optimization in targeted frequency bands without requiring complex antenna redesign.
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
The solution effectively isolates adjacent antennas, enhancing radiation performance and optimizing resonance across multiple frequency bands, thereby improving the overall antenna performance in electronic devices.
Implementation Method 1
improving radiation efficiency by managing impedance characteristics across different frequency bands
Implementation Method 2
the at least one isolation element includes at least one capacitance element or at least one inductance element
Implementation Method 3
the at least one isolation element includes at least one capacitance element or at least one inductance element
Implementation Method 4
a first antenna configured to transmit and receive signals of a plurality of frequency bands
Data Source
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AI summary
An electronic device includes a first antenna configured to transmit and receive signals of a plurality of frequency bands, and a second antenna disposed at an area adjacent to the first antenna. The first antenna includes a first wireless communication circuit, a first radiator, a first feeding part configured to connect the first wireless communication circuit to the first radiator, a first ground part configured to be connected to one end of the first radiator, a switching circuit configured to be connected to the first radiator in an area adjacent to the second antenna, at least one frequency band element in which a first end is connected to the switching circuit and a second end is connected to the first ground part, and at least one isolation element configured to connect the first radiator to the ground part in the area adjacent to the second antenna.