Terminating resistor for microstrip lines - consists of damping wedge movable on conducting trace and held by permanent magnets below it

摘要

The resistor consists of a damping wedge which is mounted on the conducting trace on a substrate. The other side of the substrate rests on the metal bottom of the case. The damping wedge (1) is designed to move on the substrate (2) longitudinally between guides (5) made of plastics material. It moves parallel to the conducting trace (6). It is firmly held in position by permanent magnets (4) situated under the bottom (3) of the magnetisable case. There is a longitudinal groove (7) in the centre of the resistor assembly under the wedge.