Antenna and electronic device equipped with same

An antenna comprising:

• a conductor plate with an axisymmetrical shape;
• at least one slot formed on the conductor plate;
• and
• a feeding point provided on an axisymmetrical axis of the conductor plate, wherein:
• the conductor plate is folded along two locations which are parallel to the axisymmetrical axis toward mutually different directions;
• the at least one slot has an axisymmetrical shape and an axisymmetrical axis that matches the axisymmetrical axis of the conductor plate;
• the conductor plate has a horizontally rectangular shape oriented in the direction of the axisymmetrical axis;
• a composite slot is formed on one part of the axisymmetrical axis of the conductor plate, the composite slot comprising a laterally-facing M-shaped slot and a trapezoid slot with a width gradually becoming larger to an open end and formed in a succession of the laterally-facing M-shaped slot;
• and
• a rectangle slot is formed on the other part of the axisymmetrical axis of the conductor plate, thereby a slot boundary conductor portion being formed in the central portion on the axisymmetrical axis of the conductor plate between the composite slot and the rectangle slot.