PROTECTION DEVICE FOR RADIO FREQUENCY COMMUNICATION LINES AGAINST OVER VOLTAGE DUE TO LIGHTNING

摘要

Protection device to be included in radio frequency communication lines to suppress troubles caused in particular by lightning, including at least one protection element 2a…2n connected to a line matching a protected input port. The protection element 2a…2n includes a first line element in lambd/4 22, connecting the input port to the ground, and a second and third line element in lambd/4 20, 21, arranged between the input port of the trouble and the insertion point of the first line element 22 and between said point and the protected port Fig. 1, respectively.