Title :
Distributed active balun with improved linearity performance
Author :
Palomba, Mirko ; Palombini, Diego ; Colangeli, Sergio ; Cleriti, Riccardo ; Limiti, Ernesto
Author_Institution :
Dept. of Electron. Eng., Univ. di Roma Tor Vergata, Rome, Italy
Abstract :
A new active balun topology is introduced allowing to overcome gain and bandwidth limitations of traditional out-of-phase power dividers. Proposed architecture employs distributed circuits as Artificial Transmission Line Pair (ATLP) and Split Drain Distributed Amplifier (SDDA) for achieving a broadband signal balancing and featuring a positive insertion gain too. In this contribution a complete theoretical analysis for the ATLP and SDDA principle of operation is provided together with the description of the actual design flow. MMIC test vehicle operating on the multi-octave frequency range 2-18 GHz proves the effectiveness of presented topology.
Keywords :
MMIC amplifiers; baluns; distributed amplifiers; power dividers; wideband amplifiers; ATLP; MMIC; SDDA; artificial transmission line pair; broadband signal balancing; distributed active balun; frequency 2 GHz to 18 GHz; linearity performance; out-of-phase power dividers; positive insertion gain; split drain distributed amplifier; Distributed amplifiers; Logic gates; Microwave amplifiers; Microwave circuits; Microwave communication; Microwave filters; MMIC; balun; broadband; distributed amplifier; power splitter;
Conference_Titel :
Microwave Conference (GeMiC), 2015 German
Conference_Location :
Nuremberg
DOI :
10.1109/GEMIC.2015.7107761