Modular EMI Shielding Assembly for Wireless Antenna Arrays
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Solution Overview
Problem
High-power wireless communication assemblies, such as those with TRIMMs and CCA arrays, face challenges in maintaining electromagnetic interference (EMI) shielding during testing and maintenance without affecting RF performance, and existing solutions often fail to provide effective and repeatable EMI sealing.
Innovation Solution
A wireless communication electronics assembly with a housing and an electromagnetic shielding assembly comprising removably coupled integrated modules, where each module includes a ground plate with electromagnetic shielding gaskets between adjacent modules, forming a shielding plane that maintains EMI isolation while allowing for easy module replacement and testing without compromising RF performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional EMI shielding structures are used, then EMI shielding is provided, but the structure is complex and difficult to maintain
Solution Approach 1:
The EMI shielding structure is divided into multiple modular integrated modules, each containing ground plates and shielding gaskets. These modules can be independently assembled and disassembled, simplifying the overall structure while maintaining effective EMI shielding through the coordinated arrangement of shielding elements across modules.
Solution Approach 2:
The integrated modules serve multiple functions: they provide EMI shielding through ground plates and gaskets, support wireless communication devices, and enable easy maintenance through removable design. This multi-functionality reduces the need for separate dedicated shielding components, simplifying the overall structure.
2Reliability
If EMI shielding is maintained during module removal, then EMI protection is continuous, but the shielding effectiveness deteriorates when modules are removed or reinstalled
Solution Approach 1:
The shielding gaskets are pre-installed on the ground plates before modules are assembled. This preliminary preparation ensures that when modules are removed and reinstalled, the shielding elements are already in place, maintaining EMI protection continuity without requiring precise repositioning during reassembly.
Solution Approach 2:
The electromagnetic shielding gaskets act as intermediaries between adjacent ground plates and modules. These gaskets maintain continuous EMI shielding across module boundaries even when modules are removed or reinstalled, ensuring shielding effectiveness is not compromised by module removal activities.
3Power
If compact antenna configurations are used, then power density increases, but EMI shielding becomes more difficult to maintain
Solution Approach 1:
The integrated modules with ground plates and shielding gaskets are arranged in a nested or closely packed configuration, allowing compact antenna arrays to achieve high power density while maintaining EMI shielding. The shielding elements are integrated within and between modules, ensuring protection is maintained even in compact arrangements.
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 provides high-performance EMI shielding with increased power density, allowing for compact antenna configurations and repeated effective shielding without damaging sensitive components, even during module removal and reinstallation, while maintaining RF performance.
Implementation Method 1
at least one electromagnetic shielding gasket coupled to the first side edge, wherein adjacent ground plates are coupled to each other about respective side edges such that the electromagnetic shielding gasket is disposed between the respective side edges, thereby defining a shielding plane, to electromagnetically shield the electronic devices from the wireless communication devices
Data Source
AI summary
A wireless communication electronic assembly can include a plurality of integrated modules each having a ground plate interfaced to each other and defining a shielding plane. Each ground plate can have a left edge and a right edge opposite each other. A plurality of wireless communication devices can be positioned on one side of the shielding plane, and a plurality of electronic devices can be positioned on the other side of the shielding plane. One or more electromagnetic shielding elements, such as gasket(s), channel strip(s), stamping element(s), etc. can be disposed between the left edge and the right edge of adjacent ground plates to electromagnetically shield the plurality of electronic devices from the plurality of wireless communication devices. The left and right edges can be recessed or offset on one side of the shielding plane. Rows and columns of integrated modules can be interfaced about a plurality of electromagnetic shielding elements. A method of installing and replacing integrated modules of an antenna array.