Communication systems have been driven towards the fifth generation (5G) due to demands of compact, high speed, and large bandwidth systems. These types radio communication require new more efficient antenna designs. This article presents a design solution broadband microstrip intended for use in 5G The proposed has central operating frequency 28 GHz can be used LMDS (local multipoint distribution service) band. dimensions its parameters calculated, simulated, optimized using FEKO software....

The reflection and absorption properties of powdered nanocrystalline FeSiBCuNb (“Finemet”) alloy at microwaves have been presented. To visualize the shielding ability this material, complex permittivity permeability pulverized Finemet in frequency range from 0.2 to 10 GHz studied. measure Finemet, modification Nicolson, Ross, Weir method was mainly based on unwrapping technique measured <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">S</i>...

In the work enhanced security of unmanned aerial vehicles (UAVs) electronics in RF environment was investigated. UAVs are commonly used many areas and cellular networks as parallel helping for systems: LTE, 5G or especially future 6G very perspective needed. For effective communications channels: “air-to-ground” well “drone-to-drone” important task is undisturbed transportation platforms, ie. UAV. However, high level outside electromagnetic radiation can affect correct work. The problem due...

To evaluate the possibility of information leakage by observing electromagnetic disturbance radiated from VGA and DVI graphical interface, we propose an evaluation method using a FSET 22 receiver. IT devices used for classified display have to minimize risk eavesdropping. In those aim is level emissions via radio path, in which there high probability interception unauthorized persons reproduction conveyed information. The article has focused on revealing eavesdropping compromising emanation...

The paper presents method for assessing immunity electronic equipment high power electromagnetic pulses carried out by employees of the LAB-KEM MUT. Assessment will help you understand susceptibility threshold these devices on environment (called High Power Electromagnetic - HPEM). This assessment focuses determining upper limit strength computer (storage devices) in HPEM environment.

Article concerns the problems associated with high power electromagnetic environment. The article describes an pulse and discusses laboratory stand to generate this pulses. paper presents method for estimating immunity informatics devices pulses carried in LAB-KEM MUT. Estimation of will help you understand susceptibility threshold these on environment (called High Power Electromagnetic - HPEM). This estimation focuses determining upper limit strength computer (Notebook, Tablet) HPEM

The article concerns problems of electromagnetic compatibility and compromising emission that is the information security. focuses on USB 3.0 Interface for which shows signals extortion used during measurements. presents results emissions measurements derived from Interface. In addition, discusses laboratory stands measuring emission.

The paper presents method for estimate susceptibility of informatic devices high-power electromagnetic (HPEM) pulses realized by employees the LAB-KEM MUT.Susceptibility estimation IT will help you understand level on HPEM environment.This focuses determining upper (PC, notebook, HDD, SD card, MMC Wi-Fi routers and more) in environment.

This paper concerns the problems of electromagnetic compatibility military equipment. There were presented measurement methodology and a description laboratory stand for measuring conducted emissions from equipment in frequency bandwidth 10kHz to 10MHz accordance with procedure CE-102 MIL-STD-461E standard. The mentioned above is used do research scope accreditation Electromagnetic Compatibility Laboratory WEL WAT granted by Polish Centre Accreditation.

A microstrip rectangular patch antenna for wearable applications is presented. The suitable GSM 1800 operated at 1710–1785 MHz and 1805–1880 MHz. This suggested designed as a 101.3 mm wide, 159.172 long 1.524 thick structure that optimized performance on the human body. was tested with user wearing it. As result of characteristics measurements made in anechoic chamber, S <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf> parameter shown to...

The field of wireless cellular network technology has seen a significant development in recent years, allowing the emergence many new applications addition to traditional mobile phone calls. We are currently implementing 5G system, which is replacing previous technologies on market. Parallel technologies, local networks based IEEE 802.11× standards rapidly spreading. desire use advantages both telephony and led idea integrating used communication systems one device requires well-designed...

Within this study, we explored the augmented security measures for electronics of unmanned aerial vehicles (UAVs) within an RF environment. UAVs are commonly utilised across various sectors, and their use as auxiliary platforms cellular networks, parallel networks working in tandem with ground-based base stations, holds considerable promise. In context, ensuring uninterrupted operation is a paramount objective. However, external electromagnetic interference emitted by existing stations may...

A measurement technique for the electric and magnetic properties of powdered ferrites has been developed.This allows one to determine relative permittivity permeability materials.Measurements were taken in a coaxial transmission line, which guarantees broadband frequency measurements.The calculations based on evaluation scattering parameters measured material two plastic walls.The values (ε', ε") (µ', µ") have done ferrite powder range from 200 MHz 1200 MHz.

The article concerns problems of electromagnetic compatibility and compromising emission that is the information security. focuses on RS232 Interface for which shows signals extortion used during measurements. presents results emissions measurements derived from Interface. In addition, discusses laboratory stands measuring emission.

The article concerns the measurement of electric field intensity in area. Described a measuring position is fully mobile. This has been achieved through use of, among other things laptop and small GPS receiver with small-sized antenna. process carried out using specially developed for this purpose software. application enables measurements on map indication site value measured field. Position two modes operation: continuous at selected frequency cyclic few frequencies. uses Google Earth to...

The article concerns problems connected with measuring shielding effectiveness of small shielded chambers. In the procedure and position for chambers have been described. Particular attention was paid to maximization dynamics in attenuation shields through minimization noise level receiver obtained as a result narrowing RBW filter intermediate frequency averaging received noised test signal.

The article presents the differences in measurement procedures for defense standards NO-06-A200 and NO-06-A500 published 2012 year relation to publication of these 2008. In addition, paper results measurements impact changes configuration laboratory stand (according 2008) radiated emissions equipment used Polish Army.

The article concerns problems of electromagnetic compatibility portable computers. Its aim is to present a sample position application and methodology measuring shielding effectiveness casing used for computers laptop type in the frequency range from 10kHz 1GHz. In detailed description 1GHz have been presented. research obtain data essential estimating attenuation computer determining minimal particular frequencies whole range. above has validated by measurements conducted Electromagnetic...

The article presents the assessment of levels radiated electromagnetic interference by commercial UAVs in context their popular use for various military tasks.The test was carried out frequency range from 30 MHz to 6 GHz, an electromagnetically anechoic chamber, accordance with procedures provided this type checks.Apart control frequencies (which course exceed standards), it can be said that most tested using brushless motors do not emission specified standard MIL-STD-461G.This opens way...

Mobile phones and Wi-Fi are the most commonly used forms of telecommunications. Initiated with first generation, mobile telephony is currently in its fifth generation without being screened extensively for any biological effects that it may have on humans or animals. Some studies indicate high frequency electromagnetic radiation emitted by phone connection can a negative effect upon human health, cause cancer, including brain tumour.The aim study was to investigate influence 2.4 GHz...

The article presents measurements results of the level radiated emission selected LED lamps. Two types lamps have been tested. first them are powered with constant voltage 12 V, and other 230 V AC. Lamp tests were carried out for possibility using this type light source illumination anechoic chamber during EMC tests. Obtained clearly indicate whether such can be used in chambers.