Data transfer across a rotating boundary of a computed tomography imaging apparatus

A receiving antenna for wirelessly receiving data between a stator of a computed tomography (CT) imaging modality and a rotor of the CT imaging modality, the rotor configured to rotate about a rotational axis, the receiving antenna comprising:

• a dielectric portion;
• and
• a conductive portion comprising a first surface facing the dielectric portion and a second surface diametrically opposite the first surface, wherein:
• the conductive portion extends between a first end and a second end in a direction substantially parallel to the rotational axis,
• a first wall defines a third end of the conductive portion, the first wall extending linearly between the first end and the second end of the conductive portion;
• and
• the second surface of the conductive portion has:
• a first width at a first width location along a first width axis that is substantially parallel to the rotational axis;
• and
• a second width at a second width location along a second width axis that is substantially parallel to the rotational axis, wherein the first width is different than the second width.

A computed tomography (CT) imaging modality comprising:

• a stator;
• a rotor configured to rotate relative to the stator about a rotational axis;
• and
• a receiving antenna coupled to the stator or the rotor for wirelessly receiving data between the stator and the rotor, the receiving antenna comprising:
• a dielectric portion;
• and
• a conductive portion having a first surface facing the dielectric portion and a second surface diametrically opposite the first surface, the conductive portion comprising:
• a conductive trace;
• a first section coupled to the conductive trace, the first section having at least a first wall and a second wall;
• and
• a second section spaced apart from the first section and coupled to the conductive trace, the second section having at least a first wall and a second wall;
• wherein:
• the second wall of the first section is parallel to the second wall of the second section,
• the first wall of the first section is disposed on a diametrically opposite side of the first section relative to the second section, and
• the first section is tapered such that a first distance between the first wall of the first section and the second wall of the first section at a first location along the second wall of the first section is different than a second distance between the first wall of the first section and the second wall of the first section at a second location along the second wall of the first section.