Antena corneta cônica quad-ridged compacta com dupla polarização

Abstract

This work presents the design and development of a compact dual-pol quad-ridge conical horn antenna. The antenna is feeded through an innovative feeding system, based on striplines implemented in a Flexible Printed Circuit Board (PCB-Flex). The proposed antenna presents 1.6 GHz bandwidth, which represents a fractional bandwidth of approximately 28%, operating from 4.9 GHz to 6.5 GHz in the Wi-Fi 6 frequency range. The conical horn antenna simulation results achieved reflection coefficients lower than -15 dB, isolation between ports lower than -25 dB and gain above 8 dBi for both polarizations across the entire bandwidth. The proposed feed system simplifies the prototyping process, allowing to increase the distance between ridges without compromising the antenna performance. The developed model has been validated through experimental measurements, which resulted in reflection coefficient values lower than -10 dB and isolation between ports lower than -17.5 dB for both polarizations, in the frequency range from 5.08 GHz to 6.425 GHz. The prototype experimental measurements validated the projected irradiant element. The results show that the proposed antenna presents good performance, is easy to manufacture, can be applied to the development of an antenna array or adapted for applications in other frequency bands.