Patent ID: 7501823

Claim:
A cylindrical magnetic resonance antenna for transmission or reception of radio-frequency signals, comprising: a plurality of longitudinal conductors extending in a longitudinal antenna direction and being parallel to and separated from each other in a circumferential antenna direction; two end rings respectively disposed at opposite ends of said plurality of longitudinal conductors, connecting the respective ends of the longitudinal conductors and proceeding around said circumferential antenna direction; each of said longitudinal conductors comprising at least one longitudinal conductor section proceeding in said longitudinal antenna direction with at least one longitudinal capacitance, identical for each longitudinal conductor, connected between two consecutive longitudinal conductor sections or between a longitudinal conductor section adjacent to the end ring and the end ring; each two circumferentially adjacent longitudinal conductors, and segments of the respective end rings connecting them, forming a network, each end ring segment comprising at least two end ring sections with at least one end ring capacitance connected therebetween, that is identical for all end ring segments; and a grounded screen comprised of electrically conductive material externally encompassing said plurality of longitudinal conductors, said screen being coupled through a screen capacitance to said longitudinal conductors and said end rings, said longitudinal capacitance, said end ring capacitance, and said screen capacitance being dimensioned to cause said magnetic resonance antenna to have the same resonance frequency for all types of activation thereof.