• DocumentCode
    2676998
  • Title

    Tunable 3.5GHz and 1.5GHz chip antennas based on thin-film BaSrTiO3 capacitors

  • Author

    Ni, Nan ; Cardona, Albert Humirang

  • Author_Institution
    Agile RF, Inc., Santa Barbara, CA, USA
  • fYear
    2011
  • fDate
    16-19 Jan. 2011
  • Firstpage
    58
  • Lastpage
    61
  • Abstract
    Tunable 3.5GHz and 1.5GHz chip antennas are presented in this paper. By applying tunable matching networks, the chip antennas show tunable characteristic. Especially, the capacitors in the matching networks are tunable thin-film BST capacitors, which have a 3:1 tuning ratio. The capacitance of the BST capacitors can be tuned by an external DC bias voltage. By varying the capacitance, the tunable matching networks increased the bandwidth of the 3.5GHz antenna by 80%, and the 1.5GHz antenna by 26%.
  • Keywords
    UHF antennas; barium compounds; circuit tuning; microwave antennas; strontium compounds; thin film capacitors; BaSrTiO3; bandwidth 1.5 GHz; bandwidth 3.5 GHz; external DC bias voltage; thin-film BST capacitors; tunable chip antennas; tunable matching networks; Bandwidth; Broadband antennas; Capacitance; Capacitors; Tuning; BST; Chip antennas; tunable circuits and devices;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Radio and Wireless Symposium (RWS), 2011 IEEE
  • Conference_Location
    Phoenix, AZ
  • Print_ISBN
    978-1-4244-7687-9
  • Type

    conf

  • DOI
    10.1109/RWS.2011.5725454
  • Filename
    5725454
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2676998