Impedance match of transmission lines having a connection arrangement for selecting impedance

Circuit arrangement for forming an impedance match of transmission lines, which circuit arrangement includes a control stage, a dynamic input impedance formed by resistances, and a transformer provided with primary and secondary coils, so that the control stage and the input impedance are connected to poles of the secondary coil of the transformer and respective transmission lines having first and second characteristic impedances are connected to poles of the primary coil of the transformer for implementation of a matcher and controller for controlling the implementation of the match, the arrangement comprising:

• a connection arrangement through which said transmission lines having different characteristic impedances are connected to the poles of the transformer's primary coil, wherein the connection arrangement includes wires of a first set connected to the primary coils and wires of a second set connected to the transmission lines, the first set of wires includes at least a first and second twin wire, and a connector part with which wires of the first and second set are connected together, which connector part includes a connector strip mounted on a circuit board and a removable counterpart which is attached to the connector strip, the counterpart being symmetrical to the connector strip, wherein in a first position, the counterpart connects at least the wires of the first set with the transmission lines having the first impedance characteristic, and when the counterpart is rotated 180 degrees in relation to the first position the counterpart connects at least the wires of the first set with the transmission lines having the second impedance characteristic.