Inline Compression RF Connector for Stable Impedance Grounding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing RF connectors face challenges in maintaining consistent impedance and 360-degree ground signal integrity, particularly in high-frequency applications, and often require complex designs with multiple parts, which can be expensive and limited in application, while also struggling with tolerance variations and inconsistent performance across different installation environments.
Innovation Solution
A connector design featuring a spring-biased center conductor and ground sleeve that compresses synchronously within a housing, maintaining consistent impedance and relative positions during compression, suitable for hybrid RF and power applications, and capable of handling wide tolerance variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spring components are used for providing 360-degree grounding, then grounding coverage is improved, but impedance consistency deteriorates due to spring flexing variations
Solution Approach 1:
A non-conductive intermediary layer is introduced between the spring component and the conductive ground elements. This intermediary layer acts as a mediator that decouples the mechanical flexing of the spring from the electrical ground path, allowing the spring to provide consistent 360-degree grounding pressure while the conductive elements maintain stable impedance characteristics without being affected by spring movement variations
2Adaptability or versatility
If compressible interposer components with elastomeric layers are used, then tolerance variations are handled, but clamping forces increase and ground signal integrity becomes inconsistent
Solution Approach 1:
The compressible structure is segmented into distinct functional layers: a non-conductive intermediary layer that provides the primary compliance for tolerance accommodation, and separate conductive ground elements that maintain electrical integrity. This segmentation allows the non-conductive portion to absorb tolerance variations through compression while the conductive portions maintain consistent ground signal integrity without requiring excessive clamping forces
3Adaptability or versatility
If connectors are designed for high-density applications, then application versatility is improved, but signal isolation deteriorates due to increased connector proximity
Solution Approach 1:
The connector design incorporates enhanced local grounding characteristics at critical signal interface points, with 360-degree ground elements strategically positioned around the signal contact. This localized ground enhancement creates strong electromagnetic shielding zones around each signal path, effectively isolating adjacent signals even in high-density configurations where connectors are in close proximity
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 connector ensures consistent impedance and reliable 360-degree ground signal integrity across various compression states and environments, supporting scalable and high-density applications, including board-to-board, cable-to-cable connections, while maintaining performance over a wide frequency range.
Implementation Method 1
The center conductor is spring-biased to move longitudinally in the housing bore. A ground sleeve element is coaxially arranged around the center conductor element and is also spring-biased to move longitudinally in the housing bore.
Implementation Method 2
The center conductor and ground sleeve are compressible into the housing bore. The center conductor element and ground sleeve are coupled together for moving together in the housing bore and maintaining their same coaxial position with respect to each other when the connector is compressed.
Data Source
AI summary
A connector includes a housing having a bore therein. A center conductor element is positioned in the bore and includes a center conductor pin. The center conductor pin is spring-biased to move longitudinally in the housing bore for being compressed. A ground sleeve element is coaxially arranged around the center conductor element and is also spring-biased to move longitudinally in the housing bore for being compressed. The center conductor element and ground sleeve element are coupled together for moving together in the housing bore when compressed. The compressed elements maintain their same coaxial position in the housing bore with respect to each other when the connector is compressed.