Electronic device and method of operating the same

An electronic device comprising:

• a processor;
• and
• an antenna device,
• wherein the antenna device includes:
• a conductive layer formed with a slot,
• a power feeding unit,
• a power feeding line arranged across the slot while being connected to the power feeding unit at one side of the slot and to a power feeding point provided in the conductive layer at another side of the slot,
• a radiation member arranged on the conductive layer and connected to the conductive layer at a connection point which is different from the power feeding point,
• a first radiation section having one end physically connected to the power feeding unit and configured to include the radiation member and a region in the conductive layer between the power feeding point and the connection point, and
• a first switching element arranged in the region in the conductive layer between the power feeding point and the connection point and including a first terminal electrically connected to a first portion of the first radiation section, and a second terminal electrically connected to a second portion of the first radiation section,
• wherein the first portion of the first radiation section and the second portion of the first radiation section are disposed between the one end of the first radiation section and another end of the first radiation section, and
• wherein the processor is configured to:
• operate in a first resonance frequency band set corresponding to the physical length of the first radiation section when the first switching element is opened, and
• operate in a second resonance frequency band set by a route formed through the first switching element which is different from the first resonance frequency band while simultaneously distributing a signal current from the power feeding unit over the physical length of the first radiation section when the first switching element is closed.