Abstract: An antenna is adapted to be connected to a coaxial cable having a central conductor and a conductive sheath. The antenna is adapted for operation at a wavelength .lambda. and comprises two loops disposed in substantially parallel planes the distance between which is .lambda./8.+-.20%. At least one connecting element connects the loops, having a length substantially equal to the distance between them. Each loop is adapted to be connected to a respective conductor of the coaxial cable and is either closed with an approximate length of 3.lambda./8 or open with a length of .lambda./4.