An antenna for generating electron spin radiation corresponding to a
signal from a radio frequency communications device includes a
substantially cylindrical conductor, a first spiral-wound flat inductor,
a second spiral-wound flat inductor and a reactive element. The first
spiral-wound flat inductor is wound in relation to the second
spiral-wound flat inductor so that when a current flows from the first
signal terminal to the second signal terminal, a first magnetic field is
generated from the first spiral-wound flat inductor and a second magnetic
field is generated from the second spiral-wound flat inductor. The first
magnetic field is in an opposite direction from the second magnetic
field. The substantially cylindrical conductor is disposed so as to
intersect the first magnetic field and the second magnetic field. The
antenna may also be used to receive electron spin radiation.