Coaxial RF Connector Sets on PCB for Signal Loss Reduction
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Solution Overview
Problem
Conventional testing boards with coaxial RF connectors face limitations in increasing connector density, leading to longer wiring lengths and increased signal loss, which hampers measurement accuracy.
Innovation Solution
The proposed testing board design features a printed circuit board with coaxial RF connector sets, where each set includes a top and bottom connector aligned in a perpendicular direction, allowing for increased density and reduced wiring length by using connecting elements to secure the connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If screws are disposed on positions covered by the sockets of the coaxial RF connectors to reduce the base size, then the density of coaxial RF connectors can be increased, but the wiring length becomes long resulting in large signal loss
Solution Approach 1:
The patent transitions from a two-dimensional arrangement of RF connectors on a single plane to a three-dimensional stacked arrangement where top and bottom connectors are vertically aligned through the PCB. This dimensional change allows connectors to be positioned closer to the connection port in the vertical dimension, reducing wiring length and signal loss while increasing connector density.
Solution Approach 2:
The patent implements a nested structure where the bottom coaxial RF connector is positioned within the projection area of the top coaxial RF connector, and both are nested within the PCB structure. This nesting allows both connectors to share the same horizontal space while maintaining separate electrical connections, effectively doubling the connector density in that location without increasing the base footprint.
2Quantity of substance
If the density of coaxial RF connectors is increased using traditional methods, then more connectors can be provided, but the wiring length increases making it difficult to improve measurement accuracy
Solution Approach 1:
By utilizing the vertical dimension through the PCB thickness, the patent positions connectors closer to the connection port without increasing horizontal wiring length. The top and bottom connectors are arranged in stacked layers, allowing signal paths to be shorter and more direct, thereby improving measurement accuracy while accommodating more connectors.
Solution Approach 2:
The patent divides the connector arrangement into separate top and bottom layers, each with its own connection path to the connection port. This segmentation allows independent optimization of each connector's signal path length, ensuring that even as the number of connectors increases, each individual wiring path remains short enough to maintain measurement accuracy.
Data Source
AI summary
A testing board (i.e., testing fixture) includes a printed circuit board (PCB), an external connection port, and plural coaxial radio frequency (RF) connector sets. The external connection port is located on the printed circuit board. Each of the coaxial RF connector sets includes a top coaxial RF connector and a bottom coaxial RF connector. The top coaxial RF connector and the bottom coaxial RF connector are respectively disposed on a top surface and a bottom surface of the printed circuit board in a coaxial arrangement and electrically connect to the external connection port.