• DocumentCode
    947338
  • Title

    GaAs Monolithic DC-6.4-GHz Variable-Gain Feedback Amplifier (Short Paper)

  • Author

    Shigaki, Masafumi ; Yokogawa, Shigeru ; Kurihara, Hiroshi ; Yamada, Katsura

  • Volume
    35
  • Issue
    10
  • fYear
    1987
  • fDate
    10/1/1987 12:00:00 AM
  • Firstpage
    923
  • Lastpage
    925
  • Abstract
    A GaAs dc-6.4-GHz variable-gain two-stage feedback amplifier with 11 dB gain has been developed. The wide bandwidth is achieved by combining a microwave matching circuit with a direct-coupled circuit. This design improves the bandwidth significantly. This circuit also has a reduced chip size. Since no interstage capacitor is necessary, the chip size is only 0.5 x 1.5 mm2. Active resistance was used in the second stage feedback circuit for variable gain. Au/ WSi self-alignment technology with a 1-µm gate length was used to improve the high-frequency characteristics of the FET.
  • Keywords
    Bandwidth; Broadband amplifiers; Feedback amplifiers; Feedback circuits; Frequency; Gain; Gallium arsenide; Gold; Microwave FETs; Optical amplifiers;
  • fLanguage
    English
  • Journal_Title
    Microwave Theory and Techniques, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9480
  • Type

    jour

  • DOI
    10.1109/TMTT.1987.1133781
  • Filename
    1133781
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=947338