Active Phased Array Antenna With Parallel Feeder Excitation At 3.7 Ghz

Abstract

Abstract. The article discusses the electromagnetic radiation level reducing in 5G telecommunication systems used in modern campuses of medical clinics, in order to ensure the correct operation of a number of medical devices and systems. The use of a phased antenna array (PAA) with beam scanning technique as part of a medical telecommunication system is proposed. A simulation of the proposed rectangular phased antenna array in the form of 0.5∗λ spaced 7x7 elements matrix was carried out. Matrix elements are constructed in the form the printed circuit board. Dipole-folded antenna element is used to increase the manufacturability of the system. Moreover, the receiving side is made in the form of three separate space sparse receivers site, but not in the form of a single one. The simulation was carried out by means of the Matlab IDE Phased Array System Toolbox. The proposed approaches made it possible to reduce the level of electromagnetic radiation in the 5G telecommunication system in two ways: by reducing the overall level of radiation compared to an omnidirectional emitter and by using the beam scanning technique of the proposed receiver structure. Keywords 3.7 GHz, Active phased array antenna, Electromagnetic Interference, Matlab IDE, medical data transmission, space sparse receiver site. 1. Introduction Today, there is a significant increase in electromagnetic pollution of the environment, due to the widespread use of modern devices and systems, the operation of which is accompanied by the appearance of high-level electromagnetic interference (EMI). First of all, these are means and devices of high-frequency power electronics and power engineering, modern communication and telecommunication systems, transport, information technologies, consumer electronics, etc. In addition, widely spreading and democratization is determining cause of high level of electromagnetic pollution of the environment. EMI spreads conductively and by radiation both, which has a complex synergistic negative impact on living nature, and also leads to unpredictable global emergency situations in various technical systems. One of the most important problems of modern times is the minimization of the negative impact of electromagnetic radiation on living nature and the system of ensuring a full-fledged human life, as well as on the functioning of technological means of its life support particularly in medical field.