Triple-band circularly polarized conformal antenna for vehicular communication applications

Vehicular communication presents a compact wideband implantable antenna for the best wireless transmission of information. The key role of the antenna is handled by the thickness of the substrate present in that antenna. Also, the shape of the antenna causes the performance characteristics. Now, vehicle-to-vehicle communication is the interesting task for designers to create successful and organized vehicular communication systems. This article presents a triple-band circularly polarized conformal antenna for vehicular communication. An antenna is introduced as a triple-band circular polarized conformal antenna and preserved a suitable mount on the vehicle surface for greater gain to provide well-maintained operational performance characteristics. For getting circular polarization, circular cuttings are provided in the design of the proposed antenna. The radiation gives a fixed direction by providing 0.3 mm thickness. Here, use a circularly polarized antenna to rectify the signal absorption due to the contact material used in the antenna. A polyamide material is used as a substrate to get a probable successful link and improve the flexibility of the antenna. The triple-band circularly polarized antenna is designed to operate in vehicular communication bands such as 2.4 GHz Wi-Fi, 3.5 GHz WiMAX, and 5.9 GHz dedicated short range communication. The antenna is designed to resonate in a triple band to improve the antenna parameters like frequency response characteristics, gain, return loss, voltage standing wave ratio, left hand circularly polarization, right hand circularly polarization, axial ratio, fidelity factor, directivity, radiated power, and input impedance. Under the operating frequency bands of 2.4, 3.4, and 5.9 GHz, the efficiency of the proposed antenna is 98.48%, 97.31%, and 97.90%, respectively. The triple-band circularly polarized conformal antenna is implemented in the high-frequency structure simulator platform. The proposed tri-band antenna is applicable in vehicular communication systems and healthcare for efficient wireless transmission.