• DocumentCode
    3490322
  • Title

    Optimizing MMIC reflection-type oscillators

  • Author

    Lenk, E. ; Schott, M. ; Hilsenback, J. ; Heinrich, W.

  • Author_Institution
    Ferdinand-Braun-Inst. fur Hochstfrequenztechnik, Berlin, Germany
  • Volume
    3
  • fYear
    2004
  • fDate
    6-11 June 2004
  • Firstpage
    1341
  • Abstract
    In this paper, optimization of the loaded quality factor QL for reflection-type HBT oscillator is investigated. Main result is an optimum relation between the S parameter phases at the three transistor ports. To support this finding, a 35.5 GHz MMIC VCO phase noise better than -85 dBc/Hz at 100 kHz offset frequency is demonstrated.
  • Keywords
    MMIC; S-parameters; circuit optimisation; heterojunction bipolar transistors; microwave oscillators; voltage-controlled oscillators; 100 kHz; 35.5 GHz; HBT oscillator; MMIC VCO; S parameter phases; heterojunction bipolar transistors; loaded quality factor; microwave oscillators; phase noise; reflection-type oscillators; transistor ports; voltage controlled oscillators; Circuits; Frequency; Heterojunction bipolar transistors; Impedance; MMICs; Microwave devices; Microwave oscillators; Phase noise; Q factor; Voltage-controlled oscillators;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Symposium Digest, 2004 IEEE MTT-S International
  • ISSN
    0149-645X
  • Print_ISBN
    0-7803-8331-1
  • Type

    conf

  • DOI
    10.1109/MWSYM.2004.1338816
  • Filename
    1338816
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3490322