Abstract
The purpose of this publication is to create and correctly analyse a secondary RF line for a hybrid FSO/RF system. Since we want to ensure almost 100% functionality, the design of a secondary RF line is very important. In our case, we have chosen two types of antennas. First, it was a helical antenna that achieves a high level of efficiency and much smaller dimensions compared to horn antennas. The second type was just a horn antenna. Its advantages are high efficiency, high gain, and narrow width of radiation angle. However, large disadvantages are dimensions and the price of these antennas. However, in both cases, we can say that these antennas are suitable for deployment to our hybrid FSO/RF system.
Highlights
FSO systems work with wavelength bands from 780 – 1600 nm. This means that there is no need to lease licensed frequency bands and it is not necessary to operate an optical beam for electrical pulses as in the case of radio frequency (RF) systems
In this horn antenna design, a monopole antenna is used as the radiator and the horn antenna body serves as the ground surface of the radiator
The antenna is simulated suitable for use, it is still very large compared to a helical antenna
Summary
FSO (Free Space Optics), shown, is a technology that uses modulated optical beams to provide wireless data transmission. Communication in this system can take place over short, medium, and long distances. A laser is used to create the optical beam, which means that it is necessary to have line-of-sight between the devices communicating in these ways This laser is housed in heads that can operate in full duplex mode. Other advantages include ease of installation and commercial availability. Due to these advantages, these systems are used for various applications, such as aeronautical and satellite communications, temporary and permanent connections between buildings [1] – [6]
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