GAZI UNIVERSITY JOURNAL OF SCIENCE, cilt.35, sa.4, ss.875-884, 2022 (Scopus)
This article presents a sub-GHz ISM band microstrip patch antenna based on the use of multilayer compact structure, which overcomes the shortcomings of typical microstrip antennas such
as low gain and high resonant frequency. The antenna was simulated using an electromagnetic
simulator, ANSYS HFSS, and fabricated on two different substrates: RT Duroid 5880 and FR4
epoxy with a compact size of 100 x 100 x 8 mm3
(0.29λ × 0.29λ × 0.02λ). The simulated results
of the antenna were then compared with the measured ones, and the two were observed to have a
reasonable agreement. The proposed antenna operates in the sub-GHz license-free ISM band
(862-875 MHz), with a gain value of 2.92 dB. Two prototypes of the proposed antenna were
fabricated and used in a Linear Wireless Sensor Networks (LWSNs) monitoring system. Results
show that the proposed antenna is a good candidate for those types of LWSNs systems