Limiter for high-frequency signals, comprising an input, wherein a high-frequency signal is fed to the limiter at its input, wherein the limiter has at least one limiting stage (8; 8 1, 8 2, 8 3, 8 4, 8 5, 8 6), which is electrically connected to the input, wherein the limiting stage (8; 8 1, 8 2, 8 3, 8 4, 8 5, 8 6) contains a series circuit with an unbiased diode (10; 10 1, 10 2, 10 3, 10 4, 10 5, 10 6) and a Zener diode (11; 11 1, 11 2, 11 3, 11 4, 11 5, 11 6) that does not serve to bias the diode, so that the high-frequency signal is electrically connected to a reference ground via the unbiased diode (10; 10 1, 10 2, 10 3, 10 4, 10 5, 10 6) and the Zener diode (11; 11 1, 11 2, 11 3, 11 4, 11 5, 11 6), and wherein the high-frequency signal is present at an anode of a first diode (10; 10 1, 10 3, 10 5) in at least one positive limiting stage (8; 8 1, 8 3, 8 5), and a cathode of the first diode (10; 10 1, 10 3, 10 5) is electrically connected to a cathode of a first Zener diode (11; 11 1, 11 3, 11 s), and an anode of the first Zener diode (11; 11 1, 11 3, 11 5) is electrically connected to the reference ground, as a result of which the at least one positive limiting stage (8; 8 1, 8 3, 8 5) limits a positive half-wave of the high-frequency signal, and/or the high-frequency signal is present at a cathode of a second diode (10 2, 10 4, 10 6) in at least one negative limiting stage (8 2, 8 4, 8 6), and an anode of the second diode (10 2, 10 4, 10 6) is electrically connected to an anode of a second Zener diode (11 2, 11 4, 11 6), and a cathode of the second Zener diode (11 2, 11 4, 11 6) is electrically connected to the reference ground, as a result of which the at least one negative limiting stage (8 2, 8 4, 8 6) limits a negative half-wave of the high-frequency signal, wherein the limiter does not bias the diodes, and wherein the limiter has an output, the output being electrically connected to the input via a line section, characterized in that the limiter has at least two of the positive limiting stages (8; 8 1, 8 3, 8 5) that limit a positive half-wave of the high-frequency signal, and/or in that the limiter has at least two of the negative limiting stages (8 2, 8 4, 8 6) that limit a negative half-wave of the high-frequency signal, the at least two positive limiting stages (8; 8 1, 8 3, 8 5) that limit the positive half-wave being connected at different connection points (12; 12 1, 12 2, 12 3) of the line section, and/or the at least two negative limiting stages (8 2, 8 4, 8 6) that limit the negative half-wave being connected at different connection points (12; 12 1, 12 2, 12 3) of the line section; and in that the at least one limiting stage (8; 8 1, 8 2, 8 3, 8 4, 8 5, 8 6) is separably connected to the line section via at least one switch (41 3, 41 4). wherein the limiting stage (8; 8 1, 8 2, 8 3, 8 4, 8 5, 8 6) contains a series circuit with an unbiased diode (10; 10 1, 10 2, 10 3, 10 4, 10 5, 10 6) and a Zener diode (11; 11 1, 11 2, 11 3, 11 4, 11 5, 11 6) that does not serve to bias the diode, so that the high-frequency signal is electrically connected to a reference ground via the unbiased diode (10; 10 1, 10 2, 10 3, 10 4, 10 5, 10 6) and the Zener diode (11; 11 1, 11 2, 11 3, 11 4, 11 5, 11 6), and wherein the high-frequency signal is present at an anode of a first diode (10; 10 1, 10 3, 10 5) in at least one positive limiting stage (8; 8 1, 8 3, 8 5), and a cathode of the first diode (10; 10 1, 10 3, 10 5) is electrically connected to a cathode of a first Zener diode (11; 11 1, 11 3, 11 s), and an anode of the first Zener diode (11; 11 1, 11 3, 11 5) is electrically connected to the reference ground, as a result of which the at least one positive limiting stage (8; 8 1, 8 3, 8 5) limits a positive half-wave of the high-frequency signal, and/or the high-frequency signal is present at a cathode of a second diode (10 2, 10 4, 10 6) in at least one negative limiting stage (8 2, 8 4, 8 6), and an anode of the second diode (10 2, 10 4, 10 6) is electrically connected to an anode of a second Zener diode (11 2, 11 4, 11 6), and a cathode of the second Zener diode (11 2, 11 4, 11 6) is electrically connected to the reference ground, as a result of which the at least one negative limiting stage (8 2, 8 4, 8 6) limits a negative half-wave of the high-frequency signal, wherein the limiter does not bias the diodes, and wherein the limiter has an output, the output being electrically connected to the input via a line section, characterized in that the limiter has at least two of the positive limiting stages (8; 8 1, 8 3, 8 5) that limit a positive half-wave of the high-frequency signal, and/or in that the limiter has at least two of the negative limiting stages (8 2, 8 4, 8 6) that limit a negative half-wave of the high-frequency signal, the at least two positive limiting stages (8; 8 1, 8 3, 8 5) that limit the positive half-wave being connected at different connection points (12; 12 1, 12 2, 12 3) of the line section, and/or the at least two negative limiting stages (8 2, 8 4, 8 6) that limit the negative half-wave being connected at different connection points (12; 12 1, 12 2, 12 3) of the line section; and in that the at least one limiting stage (8; 8 1, 8 2, 8 3, 8 4, 8 5, 8 6) is separably connected to the line section via at least one switch (41 3, 41 4).