Antenna Cable Grounding Structure for Multi-Cable Noise Suppression
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Solution Overview
Problem
Existing antenna cable systems struggle to effectively suppress noise when multiple antenna cables are used, particularly in diversity reception and multi-media composite antenna setups.
Innovation Solution
An antenna cable noise suppression structure that includes a noise suppression member electrically connected to the outer conductors of multiple antenna cables, grounded at a position within a quarter of the wavelength of the signal frequency, and connected to a grounded portion to stabilize the ground potential and reduce noise generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antenna cables are used for diversity reception and multi-media composite antenna techniques, then the functionality and signal reception capability are improved, but the noise generation in each antenna cable increases
Solution Approach 1:
The patent combines multiple antenna cables into a bundled configuration and applies a single common noise suppression member (grounding member) to all cables. This merging approach allows simultaneous noise suppression across multiple cables without requiring individual suppression components for each cable, thus maintaining functionality while reducing overall noise generation.
Solution Approach 2:
The grounding member acts as an intermediary component that mediates between the multiple antenna cables and the ground potential. By providing a common grounding path through this intermediary, the patent effectively suppresses noise in all cables without directly modifying each cable individually, resolving the contradiction between maintaining cable functionality and reducing noise.
2Reliability
If traditional noise suppression methods are applied to each antenna cable individually, then noise suppression effectiveness is improved, but the complexity and effort required increases significantly
Solution Approach 1:
The patent merges the noise suppression function into a single common grounding member that serves all antenna cables simultaneously. This eliminates the need for multiple separate suppression structures, thereby maintaining noise suppression effectiveness while significantly reducing the overall complexity and effort required for implementation.
Solution Approach 2:
The grounding member is designed as a universal component that performs noise suppression for multiple antenna cables at once. This multi-functional approach allows a single component to replace what would traditionally require multiple separate components, reducing structural complexity while maintaining effective noise suppression across all cables.
3Ease of operation
If the noise suppression member is positioned far from the end portion of antenna cables, then the ease of installation is improved, but the noise suppression effectiveness deteriorates
Solution Approach 1:
The patent specifies that the grounding member should be positioned within one-quarter wavelength from the end portion of each antenna cable. This parameter-based positioning rule balances installation ease with noise suppression effectiveness, providing a clear quantitative guideline that ensures sufficient noise suppression while allowing flexible installation locations within the acceptable range.
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 structure effectively suppresses noise in multiple antenna cables by grounding the noise suppression member to a grounded portion, stabilizing the ground potential, and reducing noise generation with minimal effort, even when cables operate at different frequencies or arrangements.
Implementation Method 1
a noise suppression member having electrical conductivity and electrically connected to each of outer conductors
Implementation Method 2
the noise suppression member and the outer conductor that is electrically connected to the noise suppression member are grounded to a grounded portion
Data Source
AI summary
An antenna cable noise suppression structure includes a plurality of antenna cables and a noise suppression member that has electrical conductivity and is electrically connected to each of outer conductors of two or more antenna cables. Further, the noise suppression member is electrically connected to an outer conductor of each antenna cable at a position at which a distance from an end of each antenna cable is equal to or less than one quarter of a wavelength calculated based on a frequency of a signal transmitted by each antenna cable. Further, the noise suppression member and the outer conductor that is electrically connected to the noise suppression member are grounded to a grounded portion.