An antenna system comprises a first antenna that is arranged on a printed
circuit board (PCB) and that includes an arc-shaped element having a
concave side and a convex side. A conducting element extends
substantially radially from a center of the concave side. A U-shaped
element has a base portion with a center that communicates with the
conducting element and two side portions that extend from ends of the
base portion towards the concave side. Second and third antennas are
arranged on the PCB and include an inner ring and an outer ring that is
concentric to the inner ring.