RF Connector Layout for Coplanar PCB Linking and Shielding

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Solution Overview

Problem

Existing RF connectors occupy a large volume, cause height differences between printed circuit boards, limit frequency band processing, and increase component costs due to the need to transmit signals in multiple bands.

Innovation Solution

A communication device with an RF connector that connects printed circuit boards on the same plane using an elastic connecting member and support member, covered by a gasket, to reduce size and improve shielding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a traditional RF connector structure is used to transmit RF signals between PCBs, then signal transmission function is achieved, but the connector occupies a large volume and causes height differences between PCBs

Engineering Contradiction:
Improveconnector volumeVSAvoidPCB alignment and connection
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The elastic connecting member is designed to be flexible and deformable, allowing it to adapt to slight variations in PCB positions and heights. This dynamic property enables the connector to maintain reliable electrical contact without requiring precise PCB alignment, thereby reducing the connector volume while preserving ease of connection.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The connector employs an elastic connecting member that acts as a flexible element to transmit RF signals. This flexible structure replaces rigid traditional connectors, reducing overall volume while the elasticity compensates for height differences between PCBs, maintaining ease of operation.

Inventive Principle:
Principle #30Flexible shells and thin films

2Adaptability or versatility

If a single connector structure is used, then manufacturing is simple, but the frequency band processing range is limited

Engineering Contradiction:
Improvefrequency band processing rangeVSAvoidconnector structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The connector is designed with a universal structure that can handle multiple frequency bands through a single device. The elastic connecting member and support member configuration allows the same connector to effectively transmit RF signals across different frequency ranges, eliminating the need for multiple specialized connectors and reducing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple connectors are used to cover various frequency bands, then frequency band coverage is improved, but the unit cost of components increases

Engineering Contradiction:
Improvefrequency band coverageVSAvoidcomponent cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By designing a single connector capable of handling multiple frequency bands, the invention eliminates the need to purchase and install multiple specialized connectors. This universal design reduces component costs while maintaining comprehensive frequency band coverage, as one versatile connector replaces several frequency-specific connectors.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention combines the functions of multiple frequency-band-specific connectors into a single multi-functional connector. This merging approach reduces the total number of components required, lowering both component costs and assembly complexity while maintaining broad frequency band coverage.

Inventive Principle:
Principle #5Merging (Combining)

4Volume of moving object

If a compact connector design is used, then device size is reduced, but shielding effect may be compromised

Engineering Contradiction:
Improvedevice sizeVSAvoidshielding effect
Core Design Contradiction:
Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The gasket is positioned to surround and cover the elastic connecting member, creating a nested configuration where the shielding structure envelops the signal transmission path. This nested arrangement provides effective shielding against electromagnetic interference while maintaining a compact overall device size, as the shielding is integrated closely around the connector rather than extending outward.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 solution allows for compact device size, efficient processing of various frequency bands, and lower component costs while enhancing radiating fin performance and shielding effects.

Implementation Method 1

an elastic connecting member, at least a part of which is elastically deformable, configured to electrically connect the printed circuit boards

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a gasket disposed to cover at least a part of the elastic connecting member... significantly improve the shielding effect by including a gasket disposed to cover the RF connector

Methodology Applied
Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentUS20250279599A1RF connector and communication device comprising same
Publication Date: 2025.09.04 KMW INC
  • US20250279599A1 patent drawing
  • US20250279599A1 patent drawing
  • US20250279599A1 patent drawing

AI summary

Disclosed are an RF connector and a communication device comprising same. According to an embodiment of the present disclosure, a communication device is provided, the communication device comprising: an instrument box comprising a substrate mounting surface and a connection groove that is formed on the substrate mounting surface; a plurality of printed circuit boards arranged on the substrate mounting surface; a connector that is arranged in the connection groove and electrically connects the plurality of printed circuit boards; and a gasket arranged to cover at least part of the connector.