CATV Signal Splitter Segmentation for Bandwidth Upgrade
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Solution Overview
Problem
Conventional CATV signal splitters have limited bandwidth, restricting the useful frequency range to 5 MHz to 1.2 GHz, and upgrading to higher bandwidth requires replacing the entire device, which is costly and disruptive to services.
Innovation Solution
A signal splitting device with a circuit board and connecting terminals mounted in a CATV passive apparatus, allowing for increased frequency response up to 1.5 GHz without replacing the entire splitter, by using pins with varying diameters to connect input and output terminals, enabling simultaneous handling of RF signals and currents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the entire CATV signal splitter is replaced to increase bandwidth, then the useful frequency range can be extended to 1.5 GHz or above, but the cost increases and CATV services must be stopped during replacement
Solution Approach 1:
The patent divides the CATV signal splitter into separable parts: a base and a cover. The circuit board with terminals is mounted on the base, allowing the cover to be removed and replaced independently. This segmentation enables upgrading the signal splitter bandwidth by replacing only the cover and circuit board assembly while keeping the base and main transmission line connection intact, thus avoiding complete device replacement and service interruption.
2Adaptability or versatility
If the entire CATV signal splitter is replaced to increase bandwidth, then the useful frequency range can be extended to 1.5 GHz or above, but the cost increases
Solution Approach 1:
The patent divides the CATV signal splitter into separable parts: a base and a cover. The circuit board with terminals is mounted on the base, allowing the cover to be removed and replaced independently. This segmentation enables upgrading the signal splitter bandwidth by replacing only the cover and circuit board assembly while keeping the base and main transmission line connection intact, thus avoiding complete device replacement and service interruption.
Solution Approach 2:
The base is designed with universal mounting structures and connection interfaces that can accommodate different cover and circuit board assemblies with varying bandwidth capabilities. The base remains a universal platform that supports multiple generations of circuit boards, allowing operators to upgrade bandwidth by simply replacing the cover and circuit board rather than the entire device, thereby reducing upgrade costs.
3Reliability
If the pin length is increased to connect the circuit board and terminals, then electrical connection is improved, but the space required in the cover increases
Solution Approach 1:
The patent employs pins with varying lengths adapted to different connection needs. The pin length is optimized to provide sufficient electrical connection reliability while minimizing the space occupied within the cover. This dynamic optimization of pin length ensures that the electrical connection between the circuit board and terminals is reliable without unnecessarily increasing the cover volume.
Data Source
AI summary
A signal splitting device is to be installed in a CATV passive apparatus. The signal splitting device includes a circuit board that is disposed in a cover of the CATV passive apparatus, and a first connecting terminal and a second connecting terminal that are mounted to the circuit board and that are connected respectively to input and output terminals of the CATV passive apparatus. Each of the first and second connecting terminals includes a pin electrically connecting the circuit board and the corresponding one of the input and output terminals. The pin has a segment that is between the circuit board and the corresponding one of the input and output terminals and that has a length ranging from 4 to 15 mm.