First measurements of a W-band folded waveguide RF structure

Bussing, Heinrich; Grede, A.; Henke, Heino

doi:10.1109/ivec.2014.6857551

Cited by 2 publications

(1 citation statement)

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“…The amplitude and position of the short circuit are determined by time domain analysis (Fourier transform) with the vector network analyser on the reflection parameter S 11 . When the perturbation moves away from the analyser its amplitude is fading, thus giving the losses as a function of the position (this bead pull technique was previously described in [7]). This second technique gives a value very close from the previous one, 45.5 dB/m, and slightly below as expected.…”

Section: A Losses Measurementmentioning

confidence: 99%

Technology, Assembly, and Test of a W-Band Traveling Wave Tube for New 5G High-Capacity Networks

André

Racamier

Zimmermann³

et al. 2020

IEEE Trans. Electron Devices

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The folded waveguide (FWG) traveling wave tube (TWT) developed in the frame of the Horizon 2020 TWEETHER project for enabling a novel W-band (92-95 GHz) high capacity wireless network for 5G, is presented. The FWG TWT was designed by particle-in-cell simulations. The technology and the results in terms of measured RF losses and beam transmission from the realized beam tester are presented. Amplification on the first TWT breadboard has been observed but with a poor multi-reflection pattern resulting from spurious burrs inside the folded waveguide. It indicates however that the FWG technology offers great manufacturing simplification compared to conventional helix TWTs, thus enabling a low-cost device with large series production suitable for the wide market of wireless communications.

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Section: A Losses Measurementmentioning

confidence: 99%