Antenna device and electronic apparatus

An antenna device comprising:

• a coil antenna that includes a first coil conductor portion provided on an inner peripheral side and wound around a coil opening and a second coil conductor portion provided on an outer peripheral side;
• and
• a planar conductor that includes a surface facing the first coil conductor portion and the second coil conductor portion;
• wherein
• a minimum separation distance between the first coil conductor portion and the planar conductor in a direction perpendicular or substantially perpendicular to the planar conductor is larger than a minimum separation distance between the second coil conductor portion and the planar conductor in the direction perpendicular or substantially perpendicular to the planar conductor.

An electronic apparatus comprising:

• an antenna device including:
• a coil antenna that includes a coil conductor wound around a coil opening;
• and
• a planar conductor that includes a surface facing a portion of the coil opening and a portion of a region in which the coil conductor is provided;
• wherein
• a minimum separation distance between the coil opening and the planar conductor in a direction perpendicular or substantially perpendicular to the planar conductor is larger than a minimum separation distance between the coil conductor and the planar conductor in the direction perpendicular or substantially perpendicular to the planar conductor.

An electronic apparatus comprising:

• an antenna device including:
• a coil antenna that includes a first coil conductor portion provided on an inner peripheral side and wound around a coil opening and a second coil conductor portion provided on an outer peripheral side;
• and
• a planar conductor that includes a surface facing the first coil conductor portion and the second coil conductor portion;
• wherein
• a minimum separation distance between the first coil conductor portion and the planar conductor in a direction perpendicular or substantially perpendicular to the planar conductor is larger than a minimum separation distance between the second coil conductor portion and the planar conductor in the direction perpendicular or substantially perpendicular to the planar conductor.