Hybrid High Power Amplifiers for L-Band Space Application (Contributo in atti di convegno)

Type
Label
  • Hybrid High Power Amplifiers for L-Band Space Application (Contributo in atti di convegno) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1109/MWSYM.2007.379988 (literal)
Alternative label
  • C. Florian; F. Scappaviva; R. P. Paganelli; I. Melczarsky; R. Cignani; M. Pirazzini; R. Giordani; M. Feudale; G. Vannini; F. Filicori (2007)
    Hybrid High Power Amplifiers for L-Band Space Application
    in IEEE / Microwave Theory and Techniques Symposium 2007, Honolulu, Haway, USA, 3-8 June 2007
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C. Florian; F. Scappaviva; R. P. Paganelli; I. Melczarsky; R. Cignani; M. Pirazzini; R. Giordani; M. Feudale; G. Vannini; F. Filicori (literal)
Pagina inizio
  • 1589 (literal)
Pagina fine
  • 1592 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4264149 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • IEEE MTT-S International Microwave Symposium digest (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • DEIS - Department of Electronics, Computer Science and Systems, Univ. of Bologna, Bologna, Viale Risorgimento 2, 40136, Italy ### MEC srl - Microwave Electronics for Communications, Bologna, Viale Pepoli 3/2, 40123, Italy ### CNR-IEIIT National Research Council, Bologna, Viale Risorgimento 2, 40136, Italy ### Department of Engineering, Univ. of Ferrara, Ferrara, Via Saragat 1, 44100, Italy ### AAAS-I Alcatel Alenia Space Italia, Roma, Via Saccomuro 24, 00131, Italy (literal)
Titolo
  • Hybrid High Power Amplifiers for L-Band Space Application (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 1-4244-0688-9 (literal)
Abstract
  • This paper describes the design and implementation of 2 hybrid high power amplifiers at L band for a space application. Indeed, the amplifiers represent prototype test vehicles for a larger hybrid amplifier to be used as the final power stage in the transmitting chain of a T/R module of an Lband SAR antenna for earth observation. The amplifiers described in this paper exploit a discrete bar of a commercial 0.35,um pHEMT process as active device. The first amplifier, featuring a single discrete device, delivers 12 Watts with 56.5% PAE and 12.3 dB gain at 2dB compression. The second amplifier exploits 4 discrete pHEMT bars using input/output microstrip splitter/combiner and lumped wire bonding/ceramic MIM capacitor output matching networks. It delivers 42 Watts with 50% PAE and 13 dB gain at 2.5dB compression. Since it is a space application, these performances have been achieved with the required de-rating on break-down voltages, current densities and operating channel temperature. The latter has been evaluated by means of a 3-D device model implemented in the framework of a finite differences numerical thermal simulator. In spite of the constraints due to space de-rating rules, the obtained output power densities are 1W/mm and 0.875W/mm for the single-discrete and the 4-discrete amplifiers, respectively, which represent a value very close to the state of the art for pHEMT processes. (literal)
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