Coaxial Cable Connector with Perpendicular Inner Conductor

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Solution Overview

Problem

Conventional methods for connecting coaxial cables to printed circuit boards result in significant energy loss due to exposed inner conductors, parasitic inductance issues, and inaccurate engagement, particularly affecting high-frequency operations and beamforming antennas.

Innovation Solution

A connector with a hollow support portion that houses the coaxial cable, allowing the inner conductor to extend perpendicular to the printed circuit board, and a multi-port variant for multiple cables, ensuring secure and accurate electrical connections by engaging the outer conductor with the connector's surface rather than a single point.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the inner conductor is exposed to the ambient, then the connection is simple, but energy loss increases significantly

Engineering Contradiction:

Improveconnection simplicityVSAvoidenergy loss

Core Design Contradiction:

Ease of manufactureVSLoss of energy

Solution Approach 1:

The connector houses the exposed inner conductor within a hollow structure, nesting the conductor inside a protective enclosure that guides it perpendicularly through the printed circuit board, eliminating ambient exposure while maintaining connection simplicity

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The inner conductor is redirected from a parallel orientation to a perpendicular orientation through the hollow structure, changing the dimensional approach of connection to reduce energy loss while preserving manufacturing ease

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If the inner conductor is bent to pass through the via hole, then the connection is achieved, but parasitic inductance increases

Engineering Contradiction:

Improveconnection achievementVSAvoidparasitic inductance

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

Instead of bending the conductor to follow the board surface, the hollow structure inverts the approach by having the conductor pass perpendicularly through the board, eliminating the bent path and associated parasitic inductance while maintaining reliable connection

Inventive Principle:

Principle #13The other way round (Inversion)

3Ease of manufacture

If the outer conductor engages with the outer conductor pad by one line of intersection, then the connection is simple, but positioning accuracy deteriorates

Engineering Contradiction:

Improveconnection simplicityVSAvoidengaging position accuracy

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The engagement transitions from a one-dimensional line contact to a two-dimensional surface contact, where the hollow structure's opening engages with the pad area, significantly improving positioning accuracy while maintaining manufacturing simplicity

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS10833461B2Connectors for coaxial cables

Publication Date: 2020.11.10 OUTDOOR WIRELESS NETWORKS LLC

AI summary

A connector for connecting a coaxial cable to a printed circuit board includes a support portion that receives an end of the coaxial cable within a hollow structure thereof so that an exposed outer conductor of the coaxial cable is connected to an interior surface of a side wall of the hollow structure and so that the coaxial cable extends within the support portion perpendicular to the printed circuit board. The connector further includes an engagement portion that is connected to the support portion and configured to fix the connector to a first side of the printed circuit board, where the engagement portion is mounted above a via hole in the printed circuit board.