Research Output

Design of Wideband Balanced Folded-Arms Dipole Antenna for Mobile Handsets

  Investigations of a wideband balanced antenna for mobile handsets covering three bands—GSM1800, GSM1900, and UMTS—are presented. Balanced antennas have advantages in handset applications as they are less affected by juxtaposition with human tissue than unbalanced types. The antenna is a slotted planar dipole with its arms folded and not connected at their ends. The antenna is fed by a balanced voltage source. The antenna impedance was investigated using two different methods, including an S-parameter method and a mirror image method. For the purpose of antenna stability evaluation and power gain measurement, a wide bandwidth planar balun was adopted and modified to feed the antenna from an unbalanced source. For validation, prototypes of the antenna were fabricated and tested. The calculated and measured results in terms of return loss show good agreement and the results also show good wideband characteristics.

  • Type:

    Article

  • Date:

    18 November 2009

  • Publication Status:

    Published

  • Publisher

    Informa UK Limited

  • DOI:

    10.1080/02726340903287406

  • Cross Ref:

    10.1080/02726340903287406

  • ISSN:

    0272-6343

  • Library of Congress:

    TK Electrical engineering. Electronics Nuclear engineering

  • Dewey Decimal Classification:

    621.38 Electronics & Communications engineering

  • Funders:

    Edinburgh Napier Funded

Citation

Zhou, D., Abd-Alhameed, R. A., See, C. H., & Excell, P. S. (2009). Design of Wideband Balanced Folded-Arms Dipole Antenna for Mobile Handsets. Electromagnetics, 29(8), 641-651. https://doi.org/10.1080/02726340903287406

Authors

Keywords

balanced antenna, planar dipole, wide bandwidth, mobile handset

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