On the performance of a microstrip antenna based UC-PBG structures for UHF RFID readers

Joint Authors

Jalal, Ali S.
Jwair, Marwa H.

Source

Engineering and Technology Journal

Issue

Vol. 36, Issue 5A (31 May. 2018), pp.480-487, 8 p.

Publisher

University of Technology

Publication Date

2018-05-31

Country of Publication

Iraq

No. of Pages

8

Main Subjects

Telecommunications Engineering

Topics

Abstract EN

Microstrip antennas suffer from low gain bandwidth product due to surface wave effects and aperture diffractions that limit their use for long-range communications.

On top of that, the difficulty of achieving a pure circularly polarized radiation with high gain due to the feeding structure effects.

This paper is subjected to design a gain enhanced circularly polarized patch antenna using Uniplanar Compact-Photonic Band Gap (UC-PBG) structu.res for UHF RFID applications.

The patch is structured as truncated corners with cross slots at the centre mounted on an FR-4 epoxy substrate of 1.6mm thickness with an overall area of 188×188mm2.

The UC-PBG is constructed of two layers; each is made of 7×7 unit cells, separated by 20mm mounted from the top of the patch at 30mm height.

The unit cell characterizations are evaluated in terms of their S-parameters and dispersion diagram CST-MWS environment.

The antenna shows a boresight gain of about 8.2 dBi at 915MHz with a front to back ratio (F/B) of 13dB.

The benchmark enhancement in boresight gain after adding the UC-PBG layers is found to be 3.4 dBi with a radiation efficiency of 87%.

Finally, an excellent agreement is achieved between the obtained measurements and numerical results.

American Psychological Association (APA)

Jalal, Ali S.& Jwair, Marwa H.. 2018. On the performance of a microstrip antenna based UC-PBG structures for UHF RFID readers. Engineering and Technology Journal،Vol. 36, no. 5A, pp.480-487.
https://search.emarefa.net/detail/BIM-831239

Modern Language Association (MLA)

Jalal, Ali S.& Jwair, Marwa H.. On the performance of a microstrip antenna based UC-PBG structures for UHF RFID readers. Engineering and Technology Journal Vol. 36, no. 5A (2018), pp.480-487.
https://search.emarefa.net/detail/BIM-831239

American Medical Association (AMA)

Jalal, Ali S.& Jwair, Marwa H.. On the performance of a microstrip antenna based UC-PBG structures for UHF RFID readers. Engineering and Technology Journal. 2018. Vol. 36, no. 5A, pp.480-487.
https://search.emarefa.net/detail/BIM-831239

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 486-487

Record ID

BIM-831239