A broadband 4-18 GHz active quadrature hybrid

Paul Sangare , Christophe Loyez (1, 2) , Kevin Carpentier (1) , Markus Mayer , Dirk Hartung , Francois Parickmiler , Nathalie Rolland (3)

1 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
2 CSAM - IEMN - Circuits Systèmes Applications des Micro-ondes - IEMN
3 IRCICA - Institut de Recherche sur les Composants logiciels et matériels pour l'Information et la Communication Avancé - UAR 3380

This paper presents an innovative topology of a broadband active quadrature hybrid. This novel architecture consists of a traveling wave amplifier with a unique coupling mechanism, providing amplitude flatness and low phase imbalance over the 4 - 18 GHz frequency band. Experimental results validate the performance of such a hybrid over more than 2 frequency octaves.

Mots clés: quadrature hybrid; active quadrature hybrid; broadband quadrature hybrid; distributed amplifiers; wideband coupling

Domaines: Sciences de l'ingénieur [physics]

Paul Sangare, Christophe Loyez, Kevin Carpentier, Markus Mayer, Dirk Hartung, et al.. A broadband 4-18 GHz active quadrature hybrid. 13th European Microwave Integrated Circuits Conference (EuMIC), Sep 2018, Madrid, Spain. pp.126-129, ⟨10.23919/EuMIC.2018.8539897⟩. ⟨hal-03270106⟩