Antenna Grounding Plunger for Continuous Contact
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Solution Overview
Problem
Existing antenna systems face challenges in maintaining a continuous ground plane due to relative movement between radiating elements, particularly in applications involving vibration, where systems like copper fingers and metallized tape fail to provide effective electrical contact.
Innovation Solution
A grounding assembly comprising a plunger, a wear plate, and a spring, which are configured to maintain electrical contact between adjacent radiating elements despite relative motion, using a T-shaped plunger and a wavy spring to ensure continuous connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If copper fingers or metallized tape are used to account for vibration and gaps in a ground plane, then some flexibility is provided, but a continuous ground plane cannot be maintained when radiating elements move relative to one another
Solution Approach 1:
The grounding assembly employs a plunger that can dynamically move within the housing along the movement direction of the radiating elements. This dynamic structure allows the plunger to maintain continuous electrical contact with the wear plate despite relative motion between elements, resolving the contradiction between flexibility and ground plane continuity.
Solution Approach 2:
The plunger acts as an intermediary component between the first radiating element (via the housing) and the second radiating element (via the wear plate). It transfers electrical contact while accommodating relative movement, enabling continuous ground plane maintenance without requiring rigid connections.
2Reliability
If a rigid ground plane structure is used to ensure electrical contact, then continuity is maintained, but the system cannot accommodate vibration and relative movement between elements
Solution Approach 1:
The plunger is designed to move dynamically within the housing to accommodate vibration and relative movement between radiating elements. This dynamic capability allows the system to maintain reliable electrical contact while adapting to mechanical movements, resolving the contradiction between rigidity and adaptability.
3Ease of manufacture
If traditional grounding systems are used in vibrating environments, then installation is simple, but electrical contact is lost due to vibration-induced gaps
Solution Approach 1:
The spring is pre-configured within the housing to apply continuous urging force to the plunger before any vibration or movement occurs. This preliminary action ensures that the plunger is always pressed against the wear plate, maintaining electrical contact even when vibration creates gaps, while keeping the installation process simple.
Solution Approach 2:
The spring provides beforehand cushioning by continuously urging the plunger toward the wear plate, compensating for gaps that may arise due to vibration. This pre-applied force ensures reliable electrical contact is maintained without requiring complex adjustment mechanisms during installation.
4Reliability
If a plunger-spring mechanism is used to maintain electrical contact during movement, then ground plane continuity is achieved, but the device complexity increases
Solution Approach 1:
The grounding assembly is segmented into distinct functional components: the housing, plunger, spring, and wear plate. Each component performs a specific function, allowing for modular design and assembly. This segmentation achieves reliable ground plane continuity while keeping the overall device complexity manageable through clear functional separation.
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 effectively sustains electrical contact between radiating elements during relative motion, reducing interference and facilitating easy assembly and disassembly of antenna systems without the need for additional tools, thus enhancing signal integrity and reducing electromagnetic interference.
Implementation Method 1
a spring disposed between the plunger and the housing, the spring configured to urge the plunger toward the wear plate
Data Source
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AI summary
A compact continuous ground plane system (200) is provided. In one embodiment, the invention relates to an assembly for forming a continuous ground plane for an antenna having at least two elements (202,204) configured to move relative to one another, the ground assembly including a first element having a housing (214), a plunger (208) disposed within the housing, a second element, a wear plate (212) coupled to the second element, and a spring (210) disposed between the plunger and the housing, the spring configured to urge the plunger toward the wear plate, where the plunger is configured to be moved within the housing and to make electrical contact with the wear plate.