A traveling wave amplifier includes a tapered attenuator network for mitigating the effects of DC bias inductor self-resonance. The amplifier includes a gain stages connected in a ladder network for successively amplifying a forward traveling wave caused by an input signal to produce an output signal. A back termination is coupled to the gain stages to absorb backwards traveling waves created by reflections from the gain stages and an output of the amplifier. An inductive DC bias circuit is coupled to the gain stages near the back termination for providing DC bias to the gain stages. A tapered multi-section frequency selective attenuator network is connected between the DC bias circuit and a first one of the gain stages for reducing the effect of self-resonance of the inductive DC bias circuit on the output signal.
