Patch Antenna Substrate Shielding for Higher Gain in Compact Devices
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Solution Overview
Problem
Existing antenna designs face challenges in maintaining high gain and maximum output for short-wavelength communication signals while minimizing electromagnetic interference and avoiding increased size or warpage.
Innovation Solution
The antenna substrate incorporates a shielding post protruding beyond the skin layer, positioned between patch antennas, connected to a shielding member, and a ground layer, which reduces electromagnetic interference and enhances gain and maximum output without increasing size or warpage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the frequency of communication signal is increased to support large data transmission, then data capacity is improved, but attenuation rate increases due to short wavelength
Solution Approach 1:
The patent converts the harmful effect of short wavelength (high attenuation) into a benefit by designing patch antennas with specific geometric configurations and using high-permittivity insulating materials. This allows the antenna to operate effectively at millimeter wave frequencies by compensating for atmospheric attenuation through optimized electromagnetic radiation characteristics.
2Object-affected harmful factors
If shielding members are added to reduce electromagnetic interference between patch antennas, then interference is minimized, but device complexity and size increase
Solution Approach 1:
The patent extracts the essential shielding function and implements it through selective placement of shielding members only in critical areas where electromagnetic interference occurs between adjacent patch antennas. Rather than enclosing the entire antenna array, shielding posts are positioned specifically at interference-prone locations, reducing overall structure complexity while maintaining effectiveness.
Solution Approach 2:
The patent applies shielding selectively in local areas where electromagnetic interference is most problematic, rather than using uniform shielding throughout the entire antenna structure. The shielding members are strategically positioned between specific patch antennas based on their radiation patterns and interference characteristics, optimizing the balance between interference reduction and structural simplicity.
3Power
If antenna size is increased to improve gain for remote transmission, then gain is improved, but device size and warpage increase
Solution Approach 1:
The patent changes the electromagnetic parameters of the antenna system by using insulating layers with high permittivity values and adjusting the geometric parameters of patch antennas (size, shape, spacing). These parameter changes enable the antenna to achieve higher gain at compact sizes by concentrating electromagnetic energy more effectively, avoiding the need for large physical dimensions.
Solution Approach 2:
The patent employs composite material structures combining conductive materials for patch antennas and ground layers with insulating materials of specific permittivity values. This composite approach allows optimization of electromagnetic performance for high gain while maintaining compact dimensions, as the material properties compensate for reduced physical size.
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 design effectively increases gain and maximum output of patch antennas by minimizing electromagnetic interference while maintaining a compact form factor.
Implementation Method 1
a shielding member spaced apart from the plurality of patch antennas, connected to the ground layer, and extending upwardly from the ground layer; and a shielding post protruding upwardly from the shielding member
Implementation Method 2
a ground layer containing a conductive material; a plurality of patch antennas disposed above the ground layer
Data Source
AI summary
An antenna substrate includes a skin layer containing an insulating material, a ground layer containing a conductive material, an insulating layer disposed between the skin layer and the ground layer and including an insulating material different from the insulating material of the skin layer, a plurality of patch antennas disposed between the ground layer and the skin layer, a shielding member disposed between the ground layer and the skin layer, spaced apart from the plurality of patch antennas, and connected to the ground layer, and a shielding post connected to the shielding member, and protruding further than an outer surface of the skin layer, from the shielding member in a direction facing the skin layer, at least a portion of the shielding post being disposed between the plurality of patch antennas.