Phase coil
A phase coil was a component of a transporter system.

A parametric scanner was typically used for aligning phase coils. ()

In November 2154, the primary phase coil of the personnel transporter of  failed, disabling the transporter system. ()

Before 2367, Geordi La Forge had upgraded the phase coils of the  to fifty-five field densities. ()

That same year, when Commander William T. Riker leveled a phaser at a force field erected by Lieutenant commander Data, Chief Miles O'Brien advised him against firing, stating that the phase coils don't take well to ricochets. ()

See also
 Phase coil resonator
 Phase coil inverter
 Phase coil generator

fr:Bobine de phase
Transporter technology