Resonator arrangement for a microwave generator comprising: a housing, a hollow cylindrical electrical conductor positioned inside the housing, a first electrode, a second electrode, wherein the two electrodes (5, 6) are spaced apart from one another and form a spark gap in the region of the conductor, and a contact element for making an electrical contact between conductor and first electrode, wherein the position of the first electrode can be adjusted in order to modify the length of the spark gap, wherein at least one contact region of the contact element is connected to the first electrode or its holder so as to resist movement, and wherein the contact element is deformable so that the opposing contact surfaces of conductor and first electrode remain in electrical contact even when the position of the first electrode is adjusted with respect to the second electrode, wherein a further contact region of the contact element is connected to the hollow cylindrical electrical conductor so as to resist movement, characterized in that the contact element comprises the following: an inner contact region, which is provided for making electrical contact with the first electrode or its holder, an outer contact region, which is provided for making electrical contact with the hollow cylindrical electrical conductor, and an intermediate region, which comprises a plurality of deformation sections and apertures, in that a clamp connection, screw connection, welded connection, soldered connection or electrically conducting glued connection is provided to produce the movement-resistant electrical connections, and in that the contact element engages in a gap provided between first electrode and its holder. a housing, a hollow cylindrical electrical conductor positioned inside the housing, a first electrode, a second electrode, wherein the two electrodes (5, 6) are spaced apart from one another and form a spark gap in the region of the conductor, and a contact element for making an electrical contact between conductor and first electrode, wherein the position of the first electrode can be adjusted in order to modify the length of the spark gap, wherein at least one contact region of the contact element is connected to the first electrode or its holder so as to resist movement, and wherein the contact element is deformable so that the opposing contact surfaces of conductor and first electrode remain in electrical contact even when the position of the first electrode is adjusted with respect to the second electrode, wherein a further contact region of the contact element is connected to the hollow cylindrical electrical conductor so as to resist movement, characterized in that the contact element comprises the following: an inner contact region, which is provided for making electrical contact with the first electrode or its holder, an outer contact region, which is provided for making electrical contact with the hollow cylindrical electrical conductor, and an intermediate region, which comprises a plurality of deformation sections and apertures, in that a clamp connection, screw connection, welded connection, soldered connection or electrically conducting glued connection is provided to produce the movement-resistant electrical connections, and in that the contact element engages in a gap provided between first electrode and its holder. an inner contact region, which is provided for making electrical contact with the first electrode or its holder, an outer contact region, which is provided for making electrical contact with the hollow cylindrical electrical conductor, and an intermediate region, which comprises a plurality of deformation sections and apertures, in that a clamp connection, screw connection, welded connection, soldered connection or electrically conducting glued connection is provided to produce the movement-resistant electrical connections, and in that the contact element engages in a gap provided between first electrode and its holder.