Tampere University of Technology

TUTCRIS Research Portal

Dual-ID headgear UHF RFID tag with broadside and end-fire patterns based on quasi-Yagi antenna

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

Details

Original languageEnglish
Title of host publicationProceedings of IEEE Asia-Pacific Microwave Conference
PublisherIEEE
Pages610-612
Number of pages3
ISBN (Electronic)9781728135175
DOIs
Publication statusPublished - 10 Dec 2019
Publication typeA4 Article in a conference publication
EventIEEE Asia-Pacific Microwave Conference - Singapore, Singapore, Singapore
Duration: 10 Dec 201913 Dec 2019
http://apmc2019.org/

Conference

ConferenceIEEE Asia-Pacific Microwave Conference
Abbreviated titleAPMC
CountrySingapore
CitySingapore
Period10/12/1913/12/19
Internet address

Abstract

We present a wearable quasi-Yagi antenna on a periodic surface for a dual-ID passive UHF RFID tag embedded in headgear. The antenna produces a near end-fire radiation pattern directed towards the user's line of sight with the directivity of 4 dBi. Moreover, it integrates another tag by utilizing the Yagi antenna's reflector as a second dipole tag antenna with broadside radiation directed upwards from the user. Hence, in one platform, we obtain a dual-ID tag with near end-fire and broadside patterns for the two tag IDs. The former is achieved by inserting a periodic surface made up of a 2-by-2 grid of square loops in between the antenna and the body. This enhances the launching of surface waves for achieving the end-fire radiation and suppresses the undesired electromagnetic antenna-body interaction.

Publication forum classification