Design of a narrowband 2.45 GHz unidirectional microstrip antenna with a reversed ‘Arrow’ shaped slot for fixed RFID tag and reader

Author

Saad-Bin-Alam, Md ; Ullah, Mohammad Sakib ; Moury, Sanjida

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., North South Univ., Dhaka, Bangladesh

fYear

2013

fDate

19-21 Dec. 2013

Firstpage

301

Lastpage

304

Abstract

In this paper, we have designed a newly shaped narrowband microstrip antenna operating at nearly 2.45 GHz based on transmission-line model. We have created a reversed `Arrow´ shaped slot at the edge of opposite side of microstrip line feed to improve return loss and minimize VSWR, which are required for better impedance matching. After simulating the design, we have got higher return loss (approximately -41 dB) and lower VSWR (approximately 1.02:1) at 2.442 GHz. The radiation pattern of the antenna is unidirectional, which is suitable for both fixed RFID tag and reader. The gain of this antenna is 9.67 dB. The design has been simulated in CST Microwave Studio 2011.

Keywords

UHF amplifiers; antenna feeds; antenna radiation patterns; directive antennas; impedance matching; microstrip antennas; microstrip lines; radiofrequency identification; slot antennas; CST Microwave Studio 2011; RFID reader; RFID tag; UHF amplifiers; antenna radiation pattern; frequency 2.442 GHz; frequency 2.45 GHz; gain 9.67 dB; impedance matching; microstrip line feed; narrowband unidirectional microstrip antenna; radiofrequency identification; reversed arrow shaped slot; transmission-line model; Antenna radiation patterns; Feeds; Gain; Microstrip; Microstrip antennas; Radiofrequency identification; Slot antennas; Microstrip; Narrowband; RFID; Return-loss; VSWR;

fLanguage

English

Publisher

ieee

Conference_Titel

Advances in Electrical Engineering (ICAEE), 2013 International Conference on

Conference_Location

Dhaka

Print_ISBN

978-1-4799-2463-9

Type

conf

DOI

10.1109/ICAEE.2013.6750352

Filename

6750352