A coupled line is a transmission line structure used in directional couplers to sample a portion of signal power from a main transmission line with minimal interference.
Commonly used trade names and technical identifiers for Coupled Line.
This component is used in the following industrial products
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To sample a controlled portion of signal power from the main transmission line without significantly disrupting the signal flow, enabling applications like power monitoring, measurement, and signal splitting.
Through specific geometric designs, such as asymmetric spacing or multi-line configurations, that preferentially couple signals traveling in one direction (e.g., forward) while minimizing coupling in the opposite direction, enhancing isolation and performance.
The coupling factor is influenced by the physical proximity of the lines, their length, the dielectric constant of the substrate, and the operating frequency, with tighter spacing and longer lines generally increasing coupling.
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