An antenna arrangement comprising: - a printed circuit board having a metallised area acting as a ground plane in use, - a recess portion in an edge portion of the ground plane, which recess portion comprises a first side and a second side, that are opposite to each other, a bottom base side connected to the first and second side to form a periphery of the recess portion ending in two points (6,7) that form an opening of the recess portion in the edge portion of the ground plane, - a first electrically reactive network with two ports (10, 11) comprising a lump series capacitor component there between, wherein the first reactive network is bridging the recess portion and having one port electrically connected to the ground plane on the first side of the recess portion, and the other port providing a radio signal feedpoint at the second side of the recess portion, - a second electrically reactive network with two ports (17, 18) comprising a lump series capacitor component there between, wherein the second reactive network is bridging the recess portion, separately from the first electrically reactive network, with one port of the second network electrically connected to the ground plane on the first side of the recess portion and another port of the second network electrically connected to the ground plane on the second side of the recess portion, wherein the antenna arrangement is configured to resonate as an antenna with a resonance frequency when a radio circuit for transmission and/or reception of radio waves is connected to the feed point and is receiving or transmitting radio waves at the resonance frequency, wherein an electrical length of the recess portion, defined as the physical length from the opening to a point on the periphery of the recess portion lying the farthest away from the opening without crossing any ground plane metal, is 1/10th of a wavelength of the resonance frequency of the antenna arrangement or less, and wherein a physical distance between the first and second electrically reactive networks (9,16) is less than 1/12 of a wavelength of the resonance frequency of the antenna arrangement, characterised in that the shape of the recess portion is triangular with the opening of the recess portion at one vertex of the triangle shape. - a printed circuit board having a metallised area acting as a ground plane in use, - a recess portion in an edge portion of the ground plane, which recess portion comprises a first side and a second side, that are opposite to each other, a bottom base side connected to the first and second side to form a periphery of the recess portion ending in two points (6,7) that form an opening of the recess portion in the edge portion of the ground plane, - a first electrically reactive network with two ports (10, 11) comprising a lump series capacitor component there between, wherein the first reactive network is bridging the recess portion and having one port electrically connected to the ground plane on the first side of the recess portion, and the other port providing a radio signal feedpoint at the second side of the recess portion, - a second electrically reactive network with two ports (17, 18) comprising a lump series capacitor component there between, wherein the second reactive network is bridging the recess portion, separately from the first electrically reactive network, with one port of the second network electrically connected to the ground plane on the first side of the recess portion and another port of the second network electrically connected to the ground plane on the second side of the recess portion,