High Frequency Amplifier Shielding via Support Partitions
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Solution Overview
Problem
Existing high-frequency amplifiers for coaxial networks are complex and costly to manufacture, with individual electrical functional units not being optimally shielded from each other, leading to inefficiencies and increased production costs.
Innovation Solution
A high-frequency amplifier design featuring a housing with integral support partitions that form isolated high-frequency chambers, a printed circuit board with ground areas separating functional units, and a compact 'sandwich' structure to minimize electromagnetic interference and simplify assembly, eliminating the need for additional partition walls and insulating layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If additional partition walls and insulating layers are used to shield electrical functional units, then electromagnetic interference protection is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The housing base integrates multiple functions: it provides structural support, forms chamber walls through support partitions, and creates electromagnetic shielding cavities. The support partitions serve dual purposes as both mechanical support elements and electromagnetic shielding barriers, eliminating the need for separate partition walls and insulating layers.
Solution Approach 2:
The support partitions are designed to perform multiple functions simultaneously: they provide mechanical support for the printed circuit board, define the boundaries of electromagnetic shielding chambers, and act as galvanically connected shielding elements. This multi-functionality reduces the overall number of components needed in the assembly.
2Object-affected harmful factors
If additional partition walls and insulating layers are used to shield electrical functional units, then electromagnetic interference protection is improved, but manufacturing cost increases
Solution Approach 1:
The housing base integrates multiple functions: it provides structural support, forms chamber walls through support partitions, and creates electromagnetic shielding cavities. The support partitions serve dual purposes as both mechanical support elements and electromagnetic shielding barriers, eliminating the need for separate partition walls and insulating layers.
Solution Approach 2:
The support partitions automatically provide electromagnetic shielding functionality as an inherent property of their design and galvanic connection to the housing base, without requiring additional insulating materials or complex assembly steps. The structure shields itself through its own architectural elements.
3Device complexity
If individual electrical functional units are not optimally shielded, then manufacturing complexity is reduced, but signal transmission reliability deteriorates
Solution Approach 1:
The housing interior is segmented into multiple independent electromagnetic shielding chambers by the support partitions. Each chamber houses specific electrical functional units, isolating their electromagnetic fields. This segmentation prevents interference between different functional units while maintaining a relatively simple overall structure.
Solution Approach 2:
Electromagnetic shielding is applied locally at each support partition and chamber boundary where it is most needed to prevent interference between adjacent functional units. The galvanic connection to the housing base provides targeted shielding exactly where electrical components are located, rather than requiring comprehensive shielding throughout the entire housing.
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 reduces electromagnetic coupling between functional units, simplifies assembly, and lowers manufacturing costs while maintaining effective signal transmission and interference protection.
Implementation Method 1
a plurality of bottom-side support partitions which are galvanically connected to the housing base and are designed in one piece with it, extend in the axial direction from the case bottom toward the case cover, thereby forming a plurality of bottom-side high-frequency chambers isolated from one another
Implementation Method 2
A plurality of ground areas on the underside are arranged between the electrical functional units on an underside of the printed circuit board
Data Source
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AI summary
A high-frequency amplifier (1) comprises a housing body (3) and a housing cover (4). The housing body (3) includes a base (10) and a surrounding wall (11), forming a receiving chamber (12). Base-side support partitions (13) are galvanically connected to the base (10) and extend axially from the base (10) towards the housing cover (4), forming several base-side high-frequency chambers (14). A printed circuit board (15) comprises electrical functional units (16). The printed circuit board (15) rests on the base-side support partitions (13), separating the individual electrical functional units (16) from one another towards the base (10) by the base-side high-frequency chambers (14).An intermediate cover (8) includes cover-side support partitions (21) that extend axially from the intermediate cover (8) towards the housing base (10), thereby forming several cover-side high-frequency chambers (22). The intermediate cover (8) rests on the printed circuit board (15), thus separating the electrical functional units (16) from each other towards the housing cover (4) by the cover-side high-frequency chambers (22).