Software defined match control circuit integrated with a planar inverted f antenna

Kathleen L. Melde, Hyun Jin Park, Ho Hsin Yeh, Beatrice Fankem, Zhen Zhou, William R. Eisenstadt

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


A planar inverted F antenna (PIFA) is integrated with a software-defined match control (SDMC) circuit in order to create an impedance match for a diverse set of frequency standards. The individual PIFA achieves better than $-$10 dB reflection coefficient for a 13.6% bandwidth at 2.45 GHz. The SDMC is a microstrip circuit with tuning diodes that are adjusted to tune the input impedance of the antenna and to select a targeted frequency range of operation. It is both an antenna impedance tuner and tunable filter. This paper discusses the design approach for the system and presents simulated and measured results. The results show that the combined antenna and SDMC can be tuned to operate at many worldwide frequency ranges even when the individual PIFA is not specifically matched to the frequencies.

Original languageEnglish (US)
Article number5582245
Pages (from-to)3884-3890
Number of pages7
JournalIEEE Transactions on Antennas and Propagation
Issue number12
StatePublished - Dec 2010


  • Multi-band antenna
  • planar inverted F antenna
  • reconfigurable filter
  • software-defined radio
  • tunable filter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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