A Miniaturized Multi-layer Microstrip Antenna for Linear Wireless Sensor Network Monitoring Systems

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