Circular Polarized Multi-Band Comb Antenna for Wireless and IoT Applications

Subject Areas : Electronics Engineering

Reza Khajeh Mohammad Lou ¹ , Tohid aribi ² , Tohid Sedghi ³

1 - Department of Electrical Engineering, Miandoab Branch, Islamic Azad University, Miandoab, Iran
2 - Microwave and antenna research center, Urmia Branch, Islamic Azad University, Urmia, Iran
3 - Microwave and antenna research center, Urmia Branch, Islamic Azad University, Urmia, Iran Department of Electrical Engineering, Urmia Branch, Islamic Azad University, Urmia, Iran

Received: 2022-02-17 Accepted : 2022-04-23 Published : 2022-04-23

Keywords: Internet of Things, circular polarization, multi-band, antenna,

Abstract :

In this research, a new multi-band microporous antenna with circular polarization is introduced for mobile and IoT applications. The applied frequency bands are covered simultaneously by the mentioned antenna, which are WLAN (2400 to 2484 MHz), WiMAX (IEEE 802.16e) 2500 to 2600 MHz, IoT (2400 to 2480 MHz with IEEE 802.11.ax standard, WLAN (5150 to 5825 MHz) which is called IEEE802.11ac standard. The antenna design process for accessing the desired frequency bands is performed step by step in the text of the article. Using the technique of facilitating the rotation of the current on the antenna, the excitation of two orthogonal modes is easily done and as a result, circular polarization is achieved. On the other hand, the circular polarization property is achieved in almost all the applied bands, which is considered as a significant advantage for this radiation system. The overall dimensions of the antenna are 0.8 × 34 ×23 mm3, which is fabricated on the FR4 substrate with a relative dielectric constant of 4.4 and a loss tangent of 0.024. In order to validate the design process, the structure is constructed and tested and measured. The extracted results show that the antenna has a directional radiation pattern and a good gain in the desired frequency bands.

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