Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloEfficient Programmable Pulse Shaping for X-band GaN MMIC Radar Power Amplifiers
Anno di pubblicazione2016
Formato
  • Elettronico
  • Cartaceo
Autore/iCorrado Florian; Tommaso Cappello; Daniel Niessen; Rudi Paolo Paganelli; Scott Schafer; Zoya Popovic
Affiliazioni autoriDepartment of Electrical, Electronic and Information Engineering, University of Bologna, 40136 Bologna, Italy. Department of Electrical, Electronic and Information Engineering, University of Bologna, 40136 Bologna, Italy. Department of Electrical, Electronic and Information Engineering, University of Bologna, 40136 Bologna, Italy. National Research Council, CNR-IEIIT, 40136 Bologna, Italy. Department of Electrical, Computer and Energy Engineering, University of Colorado Boulder, Boulder, CO 80303 USA. Department of Electrical, Computer and Energy Engineering, University of Colorado Boulder, Boulder, CO 80303 USA.
Autori CNR e affiliazioni
  • RUDI PAOLO PAGANELLI
Lingua/e
  • inglese
AbstractThis paper presents a supply modulated X-band 12-W peak power transmitter that maintains an average efficiency greater than 50% for various shapes of amplitude-modulated pulses. The main power amplifier is a two-stage GaN-on-SiC MMIC with a peak efficiency of 65%, while the pulse envelope modulator is a 95% efficient hybrid 3-b power DAC implemented with GaN-on-Si transistor switches. Envelope shaping of a pulsed waveform results in improved spectral confinement of greater than 15 dB for the first sideband compared with constant-envelope pulses, with over 20 points improvement in total efficiency. The combination of supply modulation and digital predistortion is shown to result in high composite (total) efficiency of over 55%, with simultaneous high dynamic range and with flexible digitally programmable pulse shaping.
Lingua abstractinglese
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RivistaIEEE transactions on microwave theory and techniques
Attiva dal 1963
Editore: Professional Technical Group on Microwave Theory and Techniques, Institute of Electrical and Electronics Engineers, - New York, N.Y.
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 0018-9480
Titolo chiave: IEEE transactions on microwave theory and techniques
Titolo proprio: IEEE transactions on microwave theory and techniques.
Titolo abbreviato: IEEE trans. microwave theor. tech.
Titoli alternativi:
  • Institute of Electrical and Electronics Engineers transactions on microwave theory and techniques
  • I.E.E.E. transactions on microwave theory and techniques
  • Transactions on microwave theory and techniques
  • Microwave theory and techniques
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DOI10.1109/TMTT.2016.2631171
Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)-
Parole chiavepower DAC (pDAC), radar pulse shaping, spectral confinement, Supply modulator, Envelope Tracking (ET)
Link (URL, URI)http://ieeexplore.ieee.org/document/7786895/
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Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
Moduli CNR-
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