Dual band circularly polarized truncated patch antenna for RFID reader and WiMAX applications

Author

Maria, Anju ; Vishnupriya, V. ; Aju John, K.K. ; Mathew, Thomaskutty

Author_Institution

FISAT, Angamaly, India

fYear

2015

fDate

26-27 Feb. 2015

Firstpage

684

Lastpage

687

Abstract

Novel asymmetric cross slotted truncated patch antenna is proposed for circular polarized radiation for UHF RFID reader and WiMAX applications. Proximity feed technique is adopted for the reduction of spurious radiation and improvement of bandwidth The antenna consists of two microstrip patches with asymmetric cross slots fed with a microstrip line in the same plane of the patches. An arrow shaped cross slot on the ground plane is employed for coupling power to the radiating patches. The effects of truncating corners on the patches are investigated. Truncation offers better bandwidth and reduction in VSWR with circularly polarized radiation pattern. The circular polarization is an essential requirement as the RFID reader and performs interrogation of randomly oriented RFID tags.

Keywords

UHF antennas; WiMax; antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; microstrip antennas; microstrip lines; multifrequency antennas; radiofrequency identification; slot antennas; UHF RFID reader; VSWR reduction; WiMAX application; circularly polarized radiation pattern; dual band circularly polarized cross slotted truncated patch antenna; microstrip line; microstrip patch; proximity feed technique; spurious radiation reduction; Antenna measurements; Bandwidth; Frequency measurement; Loss measurement; Microstrip; Microstrip antennas; Radiofrequency identification; Circular polarization; Corner truncated square patches; RFID reader antenna; WiMAX connectivity; dual band;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Communication Systems (ICECS), 2015 2nd International Conference on

Conference_Location

Coimbatore

Print_ISBN

978-1-4799-7224-1

Type

conf

DOI

10.1109/ECS.2015.7124996

Filename

7124996