A. Wagner 1, K. Blaum,1, W. Quint2, B. Schabinger3, S. Sturm3, and G. Werth3 1MPI für Kernphysik, D-69117 Heidelberg, Germany; 2GSI, D-64291 Darmstadt, Germany; 3Institut für Physik, Johannes Gutenberg-Universität, D-55099 Mainz High-precision measurements of the gyromagnetic factor (g-factor) of the electron bound in highly-charged ions allow for a stringent test of bound-state quantum electro...

Differential amplifiers can be an appropriate solution in the implementation of radio astronomy receivers, due to their efficient interference and harmonic isolation. In this paper, two different topologies are presented. The first one consists of two single ended amplifiers in a balanced topology. The second one is formed by cascading two simple differential stages. Both circuits operate in th...

The increased interest in vacuum tube audio amplifiers led to an increased interest in mathematical modelling of such kind of amplifiers. The main purpose of this paper is to develop a novel global numerical approach in calculation of the harmonic distortion (HD) and intermodulation distortion (IM) of vacuum-triode audio amplifiers, suitable for applications using brute-force of modern computer...

Digital predistortion (DPD) based on Volterra models is commonly employed to counteract the nonlinear distortion of power amplifiers. However, when concurrent dual-band signals are transmitted, 2-D DPD required. In this work, upgrading a standard model proposed and justified using multinomial theorem. The linearization performance current proposal has been compared unextended model. Fifth gener...

We show by numerical modeling that saturation of the population inversion reduces the stimulated thermal Rayleigh gain relative to the laser gain in large mode area fiber amplifiers. We show how to exploit this effect to raise mode instability thresholds by a substantial factor. We also demonstrate that when suppression of stimulated Brillouin scattering and the population saturation effect are...

Coherent beam combining enables power scaling beyond the limits of single amplifiers. Therefore, improving the performance and simplicity of coherent combination techniques is of great interest for many high power applications. Here, we show all-fiber coherent beam combining of two ytterbium doped amplifiers with and without a dedicated phase actuator and a total output power up to 25 W. Instea...

Conventional pipelined ADCs use electronic feedback to achieve highly linear and drift insensitive transfer characteristics in their interstage gain elements. Especially in the converter frontend, amplifiers with large open-loop gain are needed to achieve the desired accuracy. Due to additional, conflicting low noise and high bandwidth requirements, precision amplifiers dominate the power dissi...