Dual-band inverted F antenna reducing SAR

An inverted F antenna (IFA) which reduces a specific absorption rate (SAR), the IFA comprising:

• a ground;
• an auxiliary radiator which is attached to one end of the ground and disposed along a plane direction of the ground;
• a radiator which is disposed in parallel with and at an interval from the auxiliary radiator, and radiates electromagnetic waves;
• a feed which supplies current to the radiator;
• and
• a short which connects the radiator with the ground and discharges the current to the ground,
• wherein the auxiliary radiator comprises a strip line which is bent several times in a helical shape, the radiator is connected to the short and the feed, and the radiator includes a first radiation part extending along the long side of the auxiliary radiator, and the radiator includes a second radiation part which has a first part and a third part on both sides of the first radiation part in parallel and a second part connecting the first part to the third part and bent downward to the auxiliary radiator in a “U” shape;
• wherein the first part is connected to one end of the second part where the second part bends down in the ‘U’ shape, and the third part is connected to the other end of the second part where the second part bends down in the ‘U’ shape;
• and
• wherein the first radiation part is directly connected to the first part but is not directly connected to the second part and the third part.