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We present in this paper an ongoing project will is targeting the combination of several technologies to achieve high-data-rate and long-range links using a mW level source with fast modulation, waveguide coupled to drive a traveling-wave tube amplifier towards a modulated in the 210-250 GHz range. In this project we are also investigating antennas structures, high-gain for outdoor links and using lens or cassegrain design or lower gain systems with steerable capability for indoor links.

High temperature superconductors

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High temperature superconductors --- Congresses

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This work focuses on two topics. The first is the investigation of producing filaments on copper-stabilized coated conductors, with striations made after or before electroplating the tape. The second topic is the applicability of the striations for reducing the AC losses of cables, in particular the CORC® and RACC cables, which are made with high-temperature superconductor (HTS) striated tapes.

Cables. --- High temperature superconductors.

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The unfeasible fabrication of helix slow wave structures in W-band traveling wave tubes makes necessary to find alternative slow wave structures in order to amplify the RF signal to the output levels required to overcome atmospheric attenuation in satellite communications. Meander lines are nowadays being studied as slow wave structures for W-band traveling wave tubes due to their favorable properties compared to full metal alternatives. A novel meander line topology is introduced in this work, showing that high gain and output power can be achieved using a low-voltage electron beam. Cold and large signal simulations are presented in this work.

High temperature superconductors --- Millimeter wave devices

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High temperature superconductors --- Congresses --- -Materials at low temperatures --- Superconductors --- -Congresses --- High temperature superconductors - Congresses