G-Type RF Connector Structure for High Current and 75-Ohm Impedance
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Solution Overview
Problem
Conventional G-type RF connectors face challenges in accommodating higher current ratings while maintaining 75-ohm impedance, leading to potential structural integrity issues and impedance mismatches that affect RF performance.
Innovation Solution
The design of the connector includes a smooth, uniform outer wall barrel with increased inner diameter and outer diameter of the center receptacle, eliminating grounding springs to maintain thickness and allow for larger current flow without compromising impedance, and incorporates a spring gasket for compatibility with conventional plugs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the center pin diameter is increased to handle higher current, then the current handling capacity is improved, but the impedance control becomes more difficult and structural integrity is compromised
Solution Approach 1:
The connector is divided into two separate components: the center pin (male connector) and the center receptacle (female connector). This segmentation allows independent optimization of each component - the center pin can be sized for current handling while the center receptacle is designed for impedance control and structural support, resolving the contradiction between current capacity and impedance precision.
Solution Approach 2:
The design transitions from a single integrated connector to a multi-component assembly with distinct functional zones. The center receptacle extends in the axial dimension to provide structural integrity, while the center pin provides the current-carrying surface. This dimensional separation allows each component to optimize its primary function without compromising the other.
2Power
If the barrel inner diameter is increased to accommodate larger center pin, then the current handling capacity is improved, but the barrel wall thickness is reduced compromising structural integrity
Solution Approach 1:
The structural support function is segmented from the barrel and transferred to the center receptacle. The center receptacle acts as an internal support structure that maintains barrel integrity, allowing the barrel inner diameter to be increased for higher current capacity without compromising overall structural strength.
Solution Approach 2:
The center receptacle serves as an intermediary structural element between the barrel and the center pin. It provides the necessary mechanical support and impedance control, allowing the barrel to be optimized for current handling while the receptacle maintains structural integrity and electrical performance.
3Power
If grounding springs are removed to maintain barrel thickness, then the current handling capacity is improved, but compatibility with conventional plugs is lost
Solution Approach 1:
The grounding spring mechanism is extracted from the center receptacle assembly and relocated to the outer barrel structure. This allows the center receptacle to maintain its simplified design with adequate wall thickness for current handling, while the outer barrel provides the grounding function through its own structural design, maintaining compatibility with conventional plugs.
Solution Approach 2:
The outer barrel acts as an intermediary that provides grounding functionality without requiring grounding springs in the center receptacle. The barrel's outer surface provides the grounding contact interface, allowing the center receptacle to be optimized for current handling while compatibility is maintained through the barrel's design.
Data Source
AI summary
An electrical connecter (400), such as a jack, has a mating end (402), a first barrel (404), an optional collar (406), a second barrel (408), a body end (410), a center receptacle (412), a first solid dielectric (502) at the mating end of the first barrel, and second solid dielectric (504) at the body end (410) of the second barrel. The first section of the barrel has a smooth and uniform outer wall (404A). This allows the inner diameter (DIS) of the first section of the barrel to be increased without reducing the thickness (T) of the first section of the barrel below a minimum value, and allows the outer diameter (DOC) of the center conductor in the vicinity of the first section of the barrel to be increased to provide for a greater current-handling capability. This provides for maintaining a desired impedance even with the greater current-handling capability.