Electrical Connector Crosstalk Reduction via Shielded Contact Bending
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Solution Overview
Problem
As electrical connectors trend towards miniaturization, the decreased distance between adjacent contacts increases crosstalk, and simply increasing contact length is not feasible, necessitating a design that effectively reduces crosstalk while maintaining compactness.
Innovation Solution
The electrical connector design features a contact case with first and second contacts arranged in two rows, where the first bending portions of the first contacts are located inside the case, and the second bending portions of the second contacts are outside, creating a larger distance between them, enclosed by a metal shield to reduce crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the distance between adjacent contacts is decreased for miniaturization, then the connector size is reduced, but the crosstalk between contacts is increased
Solution Approach 1:
A metal shield is introduced as an intermediary element positioned between adjacent contacts. The shield acts as a mediator that blocks electromagnetic field interference between contacts, reducing crosstalk while allowing the contacts to remain in close proximity for miniaturization.
Solution Approach 2:
The metal shield provides localized electromagnetic shielding specifically at the regions where crosstalk occurs between adjacent contacts. This targeted approach allows the connector to maintain compact dimensions while addressing the crosstalk issue only where it is most critical.
2Object-generated harmful factors
If the length of contacts is increased to reduce crosstalk, then the distance between contacts can be increased, but the connector size increases
Solution Approach 1:
Instead of increasing contact length in the longitudinal direction to reduce crosstalk, the metal shield introduces a new spatial dimension (transverse shielding) to address the crosstalk problem. This allows contacts to remain short while still achieving effective crosstalk reduction through the shield positioned between them.
3Object-generated harmful factors
If contacts are arranged in two rows to reduce crosstalk, then the distance between contacts can be increased, but the connector complexity increases
Solution Approach 1:
The metal shield is integrated with the contact structure, combining the shielding function with the existing contact arrangement. This merging approach reduces the need for separate complex shielding structures and simplifies the overall design while maintaining effective crosstalk reduction.
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
This design effectively increases the distance between contacts, reducing crosstalk and ensuring reliable signal transmission while maintaining the compact form factor of the connector.
Implementation Method 1
A metal shield encloses the contact case
Data Source
AI summary
An electrical connector (1) includes a contact case (2). A plurality of contacts (3) are retained in the contact case (2). The contacts (3) comprise a group of first contacts (311) and a group of second contacts (321). Each first and second contact (311, 321) has a body portion (313), a contact portion (314) and a soldering portion (315) extending from two ends of the body portion (313). The body portion (313) has a first bending portion (3131) joined with the contact portion (314), and a second bending portion (3132) joined with the soldering portion (315). A metal shield (4) encloses the contact case (2). Wherein the first bending portions (3131) of the first contacts (311) and the second contacts (321) are located at inside of the contact case (2). The distance between the first bending portion (3131) and the second bending portion (3132) of the second contact (321) is larger than that of the first contact (311).