Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Wolfgang Durr"'
Publikováno v:
Frequenz. 69:11-20
Traveling wave tubes (TWTs) operating at S-band are to be improved by suppressing the second harmonic frequency. Among the different possibilities, two techniques, namely harmonic injection and a filter helix for frequency selective signal suppressio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c938aa515a5f7e011c27d6d299e53709
https://doi.org/10.1515/freq-2014-0125
https://doi.org/10.1515/freq-2014-0125
Publikováno v:
IEEE Transactions on Electron Devices. 61:1859-1864
Increasing the efficiency of traveling wave tubes (TWTs) is a basic development strategy. In this paper, second harmonic suppression is introduced as a possible mean. For this purpose, a filter consisting of periodic pitch discontinuities is implemen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4559d4b55ed9c7dad8c7552d2fe53dbf
https://doi.org/10.1109/ted.2013.2296150
https://doi.org/10.1109/ted.2013.2296150
Publikováno v:
2015 IEEE International Vacuum Electronics Conference (IVEC).
Thales has a long heritage in high power C-Band Travelling Wave Tubes for space application. This paper described a new generation of C-Band TWT designed for a broadband application in space: higher output power and wider instantaneous bandwidth a ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fce7c7478c50e8497ab363d91e04b35e
https://doi.org/10.1109/ivec.2015.7223814
https://doi.org/10.1109/ivec.2015.7223814
Publikováno v:
IEEE International Vacuum Electronics Conference.
The performance of an S-band traveling wave tube (TWT) is enhanced by introducing a filter consisting of periodic transmission line discontinuities into its delay line. The filter is designed to suppress the second harmonic which is particularly stro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c2e68e50ea42513ca3619108303f139
https://doi.org/10.1109/ivec.2014.6857512
https://doi.org/10.1109/ivec.2014.6857512
Publikováno v:
IEEE International Vacuum Electronics Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38db68be184b885a6f2832cae7f49221
https://doi.org/10.1109/ivec.2014.6857507
https://doi.org/10.1109/ivec.2014.6857507
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 46:712-715
Silicon circuits, now penetrating well into the microwave frequency range, use lossy silicon substrates. Consequently, the microwave performance of transmission lines on this substrate becomes increasingly important and has been investigated here up
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33df2ea2e1d50fc9cab3c33843b7b653
https://doi.org/10.1109/22.668687
https://doi.org/10.1109/22.668687
Publikováno v:
Solid-State Electronics. 41:1485-1492
Si/SiGe heterojunction transistors with high germanium concentration in the base layer are capable of microwave noise figures below 1 dB at X-band frequencies, because of their low base resistance. We review critical device parameters which influence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9daee1364b4a1546501ba003b7fa500
https://doi.org/10.1016/s0038-1101(97)00094-4
https://doi.org/10.1016/s0038-1101(97)00094-4
Publikováno v:
2013 IEEE 14th International Vacuum Electronics Conference (IVEC).
A filter structure to suppress the second harmonic component in the RF signal of a traveling-wave tube (TWT) was developed and integrated into a helical delay line. Its effect is shown in simulation and measurement.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a1e33ea2b6cbdaa93e2977db138bdab
https://doi.org/10.1109/ivec.2013.6570964
https://doi.org/10.1109/ivec.2013.6570964
Publikováno v:
2010 IEEE International Vacuum Electronics Conference (IVEC).
The paper will show the actual performance of a Thales waveguide output solution for today high power S-Band TWTs. The WR340 ¼ height waveguide output has no more any dielectric inside the interface. It is a common output solution for all S-Band hig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::120b376f3b79e90268da3fd420c67f28
https://doi.org/10.1109/ivelec.2010.5503589
https://doi.org/10.1109/ivelec.2010.5503589
Publikováno v:
2007 IEEE International Vacuum Electronics Conference.
The ongoing development in satellite application requires more and more high power travelling wave tubes (TWT) to relieve the requirements for end user terminals and to improve the quality and channel capacity of the satellite down link. Also more ty
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e28168b475a1fd82086ff4108825fd05
https://doi.org/10.1109/ivelec.2007.4283294
https://doi.org/10.1109/ivelec.2007.4283294