RF Connector Shielding Structure for 20 GHz Impedance Control
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Solution Overview
Problem
Existing RF connectors experience significant signal attenuation and decreased communication quality when transmitting higher frequency signals, particularly above 9 GHz.
Innovation Solution
The RF connector incorporates an inner shielding ring on the insulation support member, which controls impedance and reduces signal attenuation and reflection by forming a complete shielding path with the outer conductor and outer shielding shell, allowing for transmission frequencies up to 20 GHz.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing RF connector structures are used, then manufacturing simplicity is maintained, but signal attenuation increases and communication quality deteriorates at frequencies above 9 GHz
Solution Approach 1:
The connector is segmented into multiple functional components: inner conductor, outer conductor, insulation support member with front and rear support sections, and inner shielding ring. This segmentation allows each component to be optimized for specific functions, enabling better signal transmission at high frequencies by reducing attenuation and controlling impedance throughout the signal path.
Solution Approach 2:
The patent employs a nested structure where the inner conductor is surrounded by the outer conductor, with the insulation support member and inner shielding ring positioned between them. The inner shielding ring is disposed on the outer peripheral surface of the insulation support member, creating concentric shielding layers that reduce signal attenuation and electromagnetic interference, thereby improving communication quality at frequencies above 9 GHz.
2Speed
If higher frequency signals are transmitted, then communication capability is improved, but signal attenuation and reflection increase
Solution Approach 1:
The insulation support member features differentiated local structures: a front support section and a rear support section with different geometries. The inner shielding ring is positioned on the outer peripheral surface of the insulation support member to specifically address impedance control at critical locations. These localized structural optimizations enable the connector to maintain low signal attenuation and reflection across the high frequency range up to 20 GHz.
Data Source
AI summary
An RF connector and a connector assembly are disclosed in this application. The RF connector includes an insulation base and at least one central conductor component. The central conductor component includes an inner conductor, an insulation support member, an inner shielding ring and an outer conductor. The inner shielding ring is disposed on an outer peripheral surface of the insulation support member. The outer conductor surrounds the insulation support member, and forms a circular insertion space between the outer conductor and the inner shielding ring for an outer shielding shell of a mating conductor component of a mating connector to be inserted into it. The RF connector and the connector assembly of the present application are particularly suitable for transmitting high-frequency signals, and can achieve a transmission frequency of 20 GHz.