• DocumentCode
    610452
  • Title

    Transistor oscillator 24.7 GHz stabilized by HEM221 mode of rectangular dielectric resonator

  • Author

    Haase, M. ; Hoffmann, Karel

  • Author_Institution
    Dept. of Electromagn. Field, Czech Tech. Univ. in Prague, Prague, Czech Republic
  • fYear
    2013
  • fDate
    17-18 April 2013
  • Firstpage
    62
  • Lastpage
    64
  • Abstract
    A transistor oscillator 24.7 GHz with rectangular dielectric resonator (DR) working in HEM221 mode in feedback path between drain and gate was developed in the microstrip structure. Lower mode oscillations were suppressed by properly designed layout of the circuit. 4.5 dBm output power and 100 dBc/Hz phase noise at 100 kHz from the carrier was achieved with transistor VMMK-1225.
  • Keywords
    circuit feedback; circuit stability; dielectric resonator oscillators; microwave oscillators; microwave transistors; DR; HEM221 mode; VMMK-1225 transistor; feedback path; frequency 24.7 GHz; lower mode oscillations; microstrip structure; phase noise; rectangular dielectric resonator; transistor oscillator; Microstrip; Microwave circuits; Microwave measurement; Microwave oscillators; Microwave transistors; Transistors; AWR Microwave Office; CST Microwave studio; E-pHEMT; HEM221; Rectangular dielectric resonator;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Techniques (COMITE), 2013l Conference on
  • Conference_Location
    Pardubice
  • Print_ISBN
    978-1-4673-5512-4
  • Type

    conf

  • DOI
    10.1109/COMITE.2013.6545043
  • Filename
    6545043
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=610452