Receptacle Connector Layout to Suppress Insertion Loss
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Solution Overview
Problem
Existing connector devices experience increased insertion loss due to electromagnetic coupling between the outer conductor of a plug connector and the lead-out portion of a receptacle connector, leading to electromagnetic field leakage.
Innovation Solution
The electrical connector is designed with a tubular-shaped ground contact and a signal contact, where the board connection portion extending from the central conductor is accommodated within the ground contact and partially exposed, preventing electromagnetic coupling by maintaining a separation from the ground contact of the mating connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lead-out portion extends outside the outer conductor to connect to the board terminal, then the electrical connection to the board is achieved, but electromagnetic coupling occurs between the outer conductor and lead-out portion causing increased insertion loss
Solution Approach 1:
The board connection portion is nested inside the outer conductor, with the central conductor positioned within the outer conductor's hollow space. This nesting arrangement allows the board connection portion to extend to the board terminal while being shielded by the outer conductor, preventing electromagnetic coupling and reducing insertion loss.
Solution Approach 2:
The outer conductor acts as an intermediary shielding structure between the lead-out portion and the ground contact of the mating connector. By positioning the board connection portion inside the outer conductor, the outer conductor mediates the electromagnetic field distribution and prevents direct coupling between the signal path and ground.
2Loss of energy
If the board connection portion is shortened to reduce electromagnetic coupling, then insertion loss is reduced, but the position of the board connection portion becomes difficult to observe
Solution Approach 1:
The insulating housing includes a transparent or translucent portion that allows visual observation of the board connection portion's position and insertion state. This transparency solution enables the board connection portion to remain short (reducing electromagnetic coupling) while still being visible through the housing material.
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 configuration effectively suppresses insertion loss and allows easy observation of the board connection portion, ensuring reliable electrical connection and visibility without increasing the lead-out length.
Implementation Method 1
the board connection portion is accommodated in a region surrounded by the first contact... electromagnetic coupling between the ground contact of the mating connector and the board connection portion is unlikely to occur
Data Source
AI summary
A receptacle connector 10 includes a ground contact 11 including a fitting portion 11a that has a tubular shape and is to be fitted to a ground contact 101 of a plug connector 100; a signal contact 12 that is to be electrically connected to a signal contact 102 of the plug connector 100; and an insulating housing 13 that holds the ground contact 11 and the signal contact 12 in an insulated state. The signal contact 12 includes a central conductor 12a, and a board connection portion 12b that extends so as to lead out from the central conductor 12a to be connected to a signal terminal portion 201 of the board 200. The board connection portion 12b is accommodated in a region surrounded by the fitting portion 11a, and at least a part of the board connection portion 12b is exposed to an outside.