A Miniaturized Triple-Band Antenna Based on Square Split Ring for IoT Applications

Duaa H. Abdulzahra, Falih Alnahwi, Abdulkareem S. Abdullah, Yasir I. A. Al-Yasir, Raed A. Abd-Alhameed
2022 Electronics  
This article presents a miniaturized triple-band antenna for Internet of Things (IoT) applications. The miniaturization is achieved by using a split square ring resonator and half ring resonator. The antenna is fabricated on an FR4 substrate with dimensions of (33 × 22 × 1.6) mm3. The proposed antenna resonates at the frequencies 2.4 GHz, 3.7 GHz, and 5.8 GHz for WLAN and WiMax applications. The obtained −10 dB bandwidth for the three bands of the proposed antenna are 300 MHz, 360 MHz, and 900
more » ... Hz, respectively. The measured reflection coefficient values of the proposed antenna corresponding to each resonant frequency are equal to −14.772 dB, −20.971 dB, and −28.1755 dB, respectively. The measured gain values are 1.43 dBi, 0.89 dBi, and 1 dBi, respectively, at each resonant frequency. There is a good agreement between the measured and simulated results, and both show an omnidirectional radiation pattern at each of the antenna resonant frequencies that is suitable for IoT portable devices.
doi:10.3390/electronics11182818 fatcat:6dyqmpomprdzhpgpeg2cfyks6e