What is the distance between directional couplers

The ​​distance between directional couplers​​ depends on ​​wavelength and frequency​​—typically ​​λ/4 to λ/2​​ (e.g., 7.5–15 cm for 1GHz signals). In ​​RF systems​​, spacing is optimized for ​​20-30 dB isolation​​ to prevent interference, with ​​microstrip designs​​ maintaining ​​0.1mm precision​​ for ​​2-40GHz applications​​. Closer spacing (<5mm) may be used in ​​high-density PCBs​​ with ​​3dB coupling loss​​. ​​What […]

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