A Frequency-Reconfigurable Wearable Textile Antenna with One Octave Tuning Range

Quoc Hung Dang, Shengjian Jammy Chen, Damith Chinthana Ranasinghe, Christophe Fumeaux

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


A reconfigurable wearable textile antenna with wide frequency tuning range is demonstrated in this work. Frequency agility is realized by adding a coplanar reconfiguration module to a planar inverted-F antenna (PIFA) constructed in textile technology. The reconfiguration module consists of a small flexible printed circuit board (PCB) which integrates a tuning circuitry with commercial snap-on buttons as electronic-to-textile connectors. Using this module equipped with a varactor diode, the frequency reconfigurability of the PIFA is investigated and optimized parametrically for maximum tuning range, exploiting a smooth transition from a quarter-wave to a half-wave patch resonant mode. A fabricated prototype demonstrates a very wide tuning range of approximately 70% (or one octave) with stable directive radiation characteristics, as predicted by simulations. The robust performance and mechanical stability of the reconfigurable antenna in various on-body and bending configurations validates the viability of the antenna tuning concept and the practicality of the proposed coplanar reconfiguration module.

Original languageEnglish
Pages (from-to)8080-8089
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Issue number12
Publication statusPublished - Dec 2021
Externally publishedYes


  • Flexible antennas
  • frequency-reconfigurable antennas
  • planar inverted-F antenna (PIFA)
  • textile antennas
  • wearable antennas


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