Radiation Efficiency Measurement Method for Passive UHF RFID Dipole Tag Antennas

Author

Koski, Eric ; Bjorninen, Toni ; Ukkonen, Leena ; Sydanheimo, Lauri

Author_Institution

Wireless Identification & Sensing Syst. Res. Group, Tampere Univ. of Technol., Tampere, Finland

Volume

61

Issue

8

fYear

2013

Firstpage

4026

Lastpage

4035

Abstract

Concurrently with the continuously developing radio frequency identification (RFID) technology, new types of tag antenna materials and structures are emerging to fulfill the requirements encountered within the new application areas. In this work, a radiation efficiency measurement method is developed and verified for passive ultra-high frequency (UHF) RFID dipole tag antennas. In addition, the measurement method is applied to measure the radiation efficiency of sewed dipole tag antennas for wearable body-centric wireless communication applications. The acquired information from measurements can be used to characterize tag antenna material structures losses and to further both improve and optimize tag antenna performance and reliability.

Keywords

UHF antennas; dipole antennas; radiocommunication; radiofrequency identification; telecommunication network reliability; wearable antennas; passive UHF RFID dipole tag antennas; radiation efficiency measurement; radio frequency identification technology; wearable body-centric wireless communication; Directivity; material characterization; radiation efficiency; realized gain; sewed antenna; transmission coefficient;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2013.2261448

Filename

6513235