A compact circularly polarized wearable filtering antenna for off-body communications

Zhi Hao Jiang, Micah D. Gregory, Douglas H. Werner, Pingjuan L. Werner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

This paper presents a compact circularly polarized (CP) wearable filtering antenna operating in the 2.4 GHz ISM band for off-body communications. The design is enabled by a mutual synthesis of a probe-fed CP patch antenna connected to a bandpass filter composed of coupled stripline open-loop resonators, which provides an integrated radiating and filtering module with a compact form factor. The integrated CP filtering antenna was fabricated and characterized, showing a strong correspondence between simulated and measured results. The resulting antenna achieves an S11 < -14 dB, an axial ratio of less than 3 dB and gain higher than 3.5 dBi in the targeted ISM band. With the integrated filtering functionality, the antenna exhibits good out-of-band rejection over an ultra-wide frequency range from 1 to 6 GHz. Further full-wave simulations and experiments were carried out, verifying that the proposed filtering antenna maintains these desirable properties even when mounted in close proximity to the human body, thus making it a promising candidate for incorporation into various wearable systems.

Original languageEnglish (US)
Title of host publication2015 9th European Conference on Antennas and Propagation, EuCAP 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9788890701856
StatePublished - Aug 27 2015
Event9th European Conference on Antennas and Propagation, EuCAP 2015 - Lisbon, Portugal
Duration: May 13 2015May 17 2015

Publication series

Name2015 9th European Conference on Antennas and Propagation, EuCAP 2015

Other

Other9th European Conference on Antennas and Propagation, EuCAP 2015
CountryPortugal
CityLisbon
Period5/13/155/17/15

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Radiation
  • Computer Networks and Communications

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    Jiang, Z. H., Gregory, M. D., Werner, D. H., & Werner, P. L. (2015). A compact circularly polarized wearable filtering antenna for off-body communications. In 2015 9th European Conference on Antennas and Propagation, EuCAP 2015 [7228527] (2015 9th European Conference on Antennas and Propagation, EuCAP 2015). Institute of Electrical and Electronics Engineers Inc..