Broadband lumped HBT amplifiers Krishnan, S. ; Mensa, D. ; Guthrie, J. ; Jaganathan, S. ; Mathew, T. ; Girish, R. ; Wei, Y. ; Rodwell, M. J. W. Abstract Publication: Electronics Letters Pub Date: 2000 DOI: 10.1049/el:20000355 Bibcode: 2000ElL....36..466K