Dual-Band Antenna Reference Layer Layout to Reduce Mutual Coupling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Integrating antennas of different frequency bands in the same device is challenging due to differences in thickness requirements, leading to issues like low efficiency, pattern distortion, mutual coupling, weak resonance, and low gain, especially when combining high and low frequency bands.
Innovation Solution
An antenna system with a first and second reference layer, where the second reference layer is designed to accommodate a higher frequency band by having a meta-surface material or electromagnetic band gap material, allowing the feeding element to pass through, and incorporating an electromagnetic band gap layer to reduce surface waves, enabling coexistence of antennas with different frequency bands on the same substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If reference planes of different heights are set for antennas of different frequency bands, then the thickness requirement for each frequency band is met, but the layout and numbers of antennas are highly limited
Solution Approach 1:
The patent introduces a vertical dimension solution by setting reference planes at different heights (first reference plane and second reference plane at different vertical positions) to accommodate different frequency bands. This dimensional approach allows antennas of different frequency bands to coexist in the same device while meeting各自的thickness requirements, thereby resolving the contradiction between manufacturing precision and layout flexibility.
2Adaptability or versatility
If antennas of high frequency band are integrated with antennas of low frequency band in the same device, then multiple frequency bands are supported, but problems such as low antenna efficiency, high antenna pattern distortion, mutual couplings, weak resonance and low antenna gain occur
Solution Approach 1:
The patent segments the antenna system into distinct high-frequency antenna elements and low-frequency antenna elements with separate reference planes. This segmentation isolates the two frequency bands, reducing mutual coupling and interference, thereby maintaining high antenna efficiency and proper resonance while supporting multiple frequency bands simultaneously.
Solution Approach 2:
The patent introduces dielectric members as intermediary elements between the high-frequency and low-frequency antennas. These dielectric members act as mediators that manage electromagnetic field interactions, reducing mutual coupling and pattern distortion while allowing both frequency bands to operate effectively in the same 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
The solution allows for efficient integration of antennas with different frequency bands, reducing unwanted surface waves and improving performance by enhancing antenna efficiency, layout flexibility, and reducing mutual coupling, suitable for applications like 5G millimeter wave communications.
Implementation Method 1
incorporating an electromagnetic band gap layer to reduce surface waves
Implementation Method 2
The second reference layer has an opening configured to adjust the second frequency band
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An antenna system (100) includes a first antenna (110) and a second antenna (120). The first antenna (110) can include a first horizontal portion (115) and be used to access a first wireless signal (S1). The first wireless signal (S1) can be wirelessly transmitted and/or received over air through the first horizontal portion (115) and a first reference layer (118). The second antenna (120) can include a second horizontal portion (125) and be used to access a second wireless signal (S2). The second wireless signal (S2) can be wirelessly transmitted and/or received over the air through the second horizontal portion (125) and a second reference layer (128) different from the first reference layer (118). The first wireless signal (S1) can be in a first frequency band, the second wireless signal (S2) can be in a second frequency band, and frequencies in the second frequency band can be higher than frequencies in the first frequency band.