Patent ID: 8803760

Claim:
An antenna device, comprising: a first antenna branch formed as a non-closed conductor loop; a second antenna branch formed as a non-closed conductor loop and connected to said first antenna branch such that said second antenna branch continues the conductor loop formed by said first antenna branch and continuing a winding direction thereof; said second antenna branch being disposed at a spacing distance transversely to the winding direction of the conductor loop adjacent to said first antenna branch; a first feed point disposed on said first antenna branch; and a second feed point disposed on said second antenna branch, said second feed point separated from said first feed point by a distance extending in the winding direction of the conductor low; wherein an electrical length of a conductor loop formed by connecting said first antenna branch to said second antenna branch fulfills a resonance condition for an electromagnetic wave to be radiated; wherein said first antenna branch and said second antenna branch form a double inverted F-antenna.