Contactless Connector Using Circular Polarization for Rotary Motion
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Solution Overview
Problem
Contactless connectors face challenges with signal degradation and transmission failure due to complex translations, especially with rotary motion, and inter-channel interference, particularly when multiple communication channels are involved, requiring a solution that facilitates rotary motion and inter-channel isolation.
Innovation Solution
A contactless connector design utilizing axisymmetric modes, such as circular polarization, with separate propagation paths for each channel, allowing for duplex communication and enabling relative rotary motion between transmitter and receiver modules, using distinct polarization modes to maintain signal strength and separation between channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If linearly-polarized wave front is used with rotary motion, then signal strength deteriorates when antennas become orthogonal, but circular polarization can maintain signal strength during rotation
Solution Approach 1:
The patent changes the polarization parameter from linear to circular polarization to enable rotary motion capability while maintaining signal strength. The circularly-polarized wave front remains consistent during rotation, allowing the connector to maintain reliable data transmission even when components rotate relative to each other.
2Productivity
If multiple communication channels are provided, then data transmission capacity increases, but inter-channel crosstalk and interference increase
Solution Approach 1:
The patent introduces polarization as an additional dimension to separate multiple communication channels. By assigning different polarization states (e.g., horizontal and vertical linear polarization, or left and right circular polarization) to different channels, the system can transmit multiple data streams simultaneously without interference, effectively utilizing the polarization dimension to achieve channel isolation.
3Adaptability or versatility
If connector components allow complex translation and rotary motion, then adaptability improves, but signal degradation and transmission failure occur
Solution Approach 1:
The patent changes the electromagnetic wave parameter from linear polarization to circular polarization, which maintains its characteristics during rotation. This allows the connector components to perform complex translations and rotary motions while maintaining reliable data transmission, as the circularly-polarized signal does not become orthogonal during rotation.
4Object-generated harmful factors
If chips are isolated by distance or shielding to avoid crosstalk, then inter-channel isolation improves, but device complexity and size increase
Solution Approach 1:
The patent uses polarization diversity to separate communication channels in the polarization dimension rather than relying on spatial separation or shielding. By assigning orthogonal polarization states to different channels, the system achieves effective inter-channel isolation without requiring complex shielding structures or increased spacing between chips.
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 ensures stable and isolated data transmission across multiple channels during rotary motion, maintaining signal strength and reducing interference, thereby addressing the limitations of existing contactless connectors.
Implementation Method 1
A contactless connector design utilizing axisymmetric modes, such as circular polarization, with separate propagation paths for each channel
Implementation Method 2
a propagation path to receive the first signal from the propagation antenna and convey the signal from a first end to a second end of the propagation path
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A contactless connector (100) includes a transmitter (102) having a first transmit integrated circuit (200) generating a first signal and a second transmit integrated circuit (202) generating a second signal. A first pick-up antenna (208) is adjacent the first transmit integrated circuit and conveys the first signal along a first transmission line (204) to a first propagation antenna (220). A second pick-up antenna (212) is adjacent the second transmit integrated circuit and conveys the second signal along a second transmission line (206) to a second propagation antenna (222). The first and second propagation antennas transmit the first and second signals to a propagation path (106) at different and separable polarizations to allow duplex communication with the propagation path.