Patent ID: 6741126
Filing Date: 2004-05-25
Classification: H03F

Abstract:
A noise suppressing broadband pulse amplifier arrangement comprising:(a) a first signal transmission medium extending between a first end thereof providing an input for the amplifier arrangement and a second end thereof, the medium having a constant impedance along the length thereof; (b) a second signal transmission medium extending between a first end thereof, and a second end thereof and which end provides an output for the arrangement, the second medium having a constant impedance along the length thereof; (c) a plurality of amplifiers connected in respective branches extending between respective spaced positions on the first medium and respective spaced positions on the second medium to provide a plurality of signal paths for an input signal between the input and the output of the arrangement and wherein all the paths have the same signal propagation delay time; (d) non-resonant coupling between the branches and the first medium and the second medium; and (e) a termination element at the first end of the second medium and a termination element at the second end of the first medium; so that at said spaced positions on the second medium amplified signals in the branches are coherently added and caused to propagate towards the output, incoherent noise generated by the amplifiers is incoherently added and divided into noise propagating towards the termination element of the second medium and noise propagating towards the output and so that the noise propagating towards said termination element is dissipated, thereby to amplify the input signal and to suppress the noise.