Multi-Band Antenna Layout Using Stacked Reference Layers
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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 antenna efficiency, high antenna pattern distortion, mutual couplings, weak resonance, and low antenna gain.
Innovation Solution
An antenna system with a first and second antenna, each accessing different frequency bands, utilizing a second reference layer with meta-surface material to adjust frequency bands and reduce surface waves, allowing coexistence on the same substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If antennas of different frequency bands are integrated in the same device, then the device supports multiple frequency bands and user experience is improved, but the thickness requirements for different frequency bands conflict and layout is highly limited
Solution Approach 1:
The patent introduces a vertical dimension by setting reference planes at different heights (first reference plane at first height, second reference plane at second height). This vertical stacking approach allows low-frequency and high-frequency antennas to coexist in the same device without horizontal layout conflicts, resolving the contradiction between multi-frequency support and layout limitation.
2Quantity of substance
If a high-frequency antenna array is used with shorter wavelength, then the distances between antennas can be smaller and number of antennas can be increased, but integration with low-frequency antenna becomes difficult and mutual coupling occurs
Solution Approach 1:
The patent segments the antenna system into distinct low-frequency and high-frequency antenna arrays with separate reference planes at different heights. This segmentation prevents mutual coupling between frequency bands while allowing independent optimization of each array, maintaining antenna efficiency despite increased number of antennas.
Solution Approach 2:
By separating low-frequency and high-frequency antennas into different vertical layers (different reference plane heights), the patent eliminates mutual coupling interference that would occur in horizontal proximity, enabling dense packing of high-frequency antennas without compromising low-frequency antenna performance.
3Manufacturing precision
If reference planes of different heights are set for different frequency bands, then the thickness requirements are met, but the number of antennas and their layout are highly limited
Solution Approach 1:
The patent resolves the layout limitation by utilizing the vertical dimension - setting the first reference plane at a first height and the second reference plane at a second height. This vertical separation allows flexible horizontal layout of antennas while maintaining the required thickness differences for different frequency bands.
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
Enables efficient integration of antennas with different frequency bands by optimizing thickness and reducing interference, improving antenna performance and flexibility in layout.
Implementation Method 1
utilizing a second reference layer with meta-surface material to adjust frequency bands and reduce surface waves
Data Source
AI summary
An antenna system includes a first antenna and a second antenna. The first antenna can include a first horizontal portion and be used to access a first wireless signal. The first wireless signal can be wirelessly transmitted and/or received over air through the first horizontal portion and a first reference layer. The second antenna can include a second horizontal portion and be used to access a second wireless signal. The second wireless signal can be wirelessly transmitted and/or received over the air through the second horizontal portion and a second reference layer different from the first reference layer. The first wireless signal can be in a first frequency band, the second wireless signal can be in a second frequency band, and frequencies in the second frequency band can be higher than frequencies in the first frequency band.