Compact low-profile unidirectional antenna at 2.45GHz for body-centric communications

M. S. Ellis, Ph. Arthur, J. Nourinia, Ch. Ghobadi, A. Lalbakhsh, B. Mohammadi

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review


This paper presents a compact, low-profile unidirectional monopole antenna designed for 2.45 GHz wireless body-centric applications in the Industrial, Scientific and Medical (ISM) band. The antenna consists of a slotted-stepped monopole and a rectangular ground plane. Broadband and stable unidirectional radiation are realized in this antenna due to a shorted side-stub that connects the monopole and the ground plane. The antenna is placed on a phantom designed to simulate a human body. Results show that the antenna's performance remains good when used on a human body. The impedance bandwidth and radiation performance remain relatively good in both free-space and on the body. This makes the antenna a good candidate as a wearable antenna. Compared to other wearable antennas, the proposed antenna does not require cavity-backed structures, and it also reduces the absorption of radiated energy by the body as compared to the commonly used omnidirectional antennas used as wearable antennas.

Original languageEnglish
Title of host publication2021 PhotonIcs and Electromagnetics Research Symposium (PIERS)
Subtitle of host publicationproceedings
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Electronic)9781728172477
ISBN (Print)9781665409889
Publication statusPublished - 2021
Event2021 Photonics and Electromagnetics Research Symposium, PIERS 2021 - Hangzhou, China
Duration: 21 Nov 202125 Nov 2021

Publication series

ISSN (Electronic)1559-9450


Conference2021 Photonics and Electromagnetics Research Symposium, PIERS 2021


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