Diplexing distributed amplifier with improved isolation

The distributed amplifiers based on the active coupling of two artificial composed right/left-handed transmission lines can give rise to a dual-band/diplexer performance. This reported work shows that it is possible to improve the isolation between bands by means of a nonuniform distribution of the...

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Bibliographic Details
Published inElectronics letters Vol. 47; no. 16; p. 1
Main Authors Mata-Contreras, J, Camacho-Peñalosa, C, Martín-Guerrero, T M
Format Journal Article
LanguageEnglish
Published Stevenage John Wiley & Sons, Inc 04.08.2011
Subjects
Bands
Devices
Diplexers
Distributed amplifiers
Joining
Noise levels
Nonuniform
Transconductance
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Summary:The distributed amplifiers based on the active coupling of two artificial composed right/left-handed transmission lines can give rise to a dual-band/diplexer performance. This reported work shows that it is possible to improve the isolation between bands by means of a nonuniform distribution of the devices' transconductance. The theoretical basis of this approach is presented as well as an experimental validation, where improvements of more than 10 dB in the isolation are obtained.
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ISSN:0013-5194
1350-911X