Electromagnetic Wave Radiation Research Articles

A COMPACT HONEYCOMB-STRUCTURED RECONFIGURABLE ANTENNA WITH COPLANAR WAVEGUIDE FEED FOR MULTIBAND WIRELESS APPLICATIONS

The design and implementation of reconfigurable antennas in wireless applications play a tremendous role in minimizing the hardware size of wireless devices. An antenna with the potential to vary its frequency of operation, radiation pattern, and polarization according to the requirement is known as a reconfigurable antenna. Here a novel honeycomb-structured frequency and pattern-reconfigurable monopole antenna has been designed. A honeycomb structure provides better bandwidth as it has multiple edges; angles of the hexagon allow for more efficient radiation and reception of electromagnetic waves and it offers a symmetric radiation pattern. It is compact, with higher packing density. A lowcost FR-4 substrate with a thickness of 1.5 mm and a compact size of 25 mm × 42 mm is used in the design. The antenna can be operated in four modes using two PIN diodes. In mode 0 it can resonate at 2.4 GHz, which is commonly used for Wi-Fi and Bluetooth communication, while in mode 1 it operates at 2.8 GHz and 1.8 GHz for mobile communication. In mode 2 it operates at 2.7 GHz as well as 1.8 GHz, and in mode 3, it works at 1.8 GHz and 3.6 GHz for WiMAX communication. This antenna has a peak gain value of 3.99 dBi. Thus, by changing the geometry/structure, antenna performance can be improved. The proposed design is fabricated on FR-4 substrate material, and the parameters such as return loss (S<sub>11</sub>) and bandwidth are validated. The simulated results and the measured results match well.

Terahertz microcomb oscillator stabilized by molecular rotation

Controlling the coherence between light and matter has enabled the radiation of electromagnetic waves with a spectral purity and stability that defines the Système International (SI) second. Transitions between hyperfine levels in atoms are accessible in the microwave and optical domains, but faithfully transferring such stability to other frequency ranges of interest requires additional components such as optical frequency combs. Such spectral purity and stability are specifically sought out for the terahertz domain for both scientific and commercial applications, including precision studies of molecular physics, next-generation wireless communications, quantum sensors, and terahertz frequency standards. Currently, there is a lack of native frequency references in this spectral range, which is essential for the consistency of measurements and traceability. Small-scale terahertz oscillators, which leverage dissipative Kerr soliton microcombs, present a promising avenue for the generation of terahertz waves that rival the spectral purity of electronic alternatives. Here, we experimentally demonstrate the rotational spectroscopy of nitrous oxide (N2O) with a microcomb-based oscillator. To mitigate the frequency drift encompassed in such waves, we lock the frequency of the microcomb terahertz oscillator to that of a rotational transition of N2O, reducing the fractional frequency stability to a level of 5 × 10−12 at 10 s of averaging time. These results constitute a high performance terahertz oscillator that can be scaled down to a compact size while circumventing the need for frequency multiplication or division of frequency standards. This demonstrates a foundational component needed for future terahertz applications.

METHOD OF REDUCING THE LEVEL OF BACK RADIATION OF ELECTROMAGNETIC WAVES OF APERTURE ANTENNAS

A method has been proposed and developed that allows you to significantly reduce the level of back radiation of electromagnetic waves of aperture-type antennas of any design. The essence of the method is the excitation of slowed surface waves on the outer side of the edge of the antenna aperture, which are in antiphase with electromagnetic waves of back radiation. Slowed surface waves are formed by an impedance metal comb, which performs the function of a retarding system, placed on the outer side of the opening edge of the antenna. The dependence of the formed characteristics of the electromagnetic field on the design parameters of the impedance comb is shown. The method was tested on the horn-slot ship antenna of the “Mius” type navigation radar station. The results of modeling and calculation of the directional pattern (DP) of the antenna confirm that the proposed method allows to reduce the level of the rear lobe of the directional pattern of the horn-slit antenna with an impedance comb by approximately 1.4 times.

Development of barium hexaferrite core–shell composites as high-performance microwave absorption by optimizing hydrothermal synthesis

In conjunction with the enhancement of societal living standards and the rapid development of information technology, an extensive variety of high-capacity electronic devices are being introduced to the market. The heightened demands result in the generation of electromagnetic wave radiation, which poses a potential risk to human well-being. Barium hexaferrite (BHF) is one of the radar-absorbing materials (RAMs) that can absorb electromagnetic waves because it has a high anisotropic field. However, its drawbacks are narrow absorption and less stability. Molybdenum disulfide (MoS2), is the best candidate for the reinforcement of BHF. The study investigated the impact of increasing the thiourea, temperature, hydrothermal holding time, and sample thickness on reflection loss. This study used a two-step molten salt and hydrothermal synthesis to make a BaFe12O19@MoS2 core-cell composite. Two-step molten salt and hydrothermal synthesis methods created single-phase BaFe12O19@MoS2 core-cell composites that worked well. The results showed that adding MoS2 to BHF changed BHF's magnetic properties from hard to soft. Increasing the hydrothermal temperature up to 220 °C effectively reduced the reflection loss of BaFe12O19@MoS2. On a 2 mm thick sample containing 100 mmol thiourea, the study achieved an electromagnetic wave absorption of 99.97 % with a reflection loss of –35.41 dB (17.37 GHz). The results of this research can be applied to protect electronic devices vulnerable to signal interference from satellite radar systems at frequencies of 12–18 GHz

МАТЕМАТИЧНА МОДЕЛЬ ДОСЛІДЖЕННЯ КОЕФІЦІЄНТІВ ВІДБИТТЯ ВІД РУПОРНИХ ВИПРОМІНЮВАЧІВ ФАЗОВАНИХ АНТЕННИХ РЕШІТОК

The article is devoted to the problem of researching reflection coefficients from horn emitters that are part of a phased antenna array. It was found that the advantage of using horn antennas is the high directivity of their radiation, a significant efficiency and a fairly high amplification factor. However, their main drawback is the back radiation (scattering) of electromagnetic waves by the elements of the antenna design. This affects the radar visibility of samples of weapons and military equipment and their electromagnetic compatibility. To eliminate these shortcomings, the article analyzes the differential characteristics of the backscatter diagrams of aperture antennas in order to improve the mathematical model of the reradiated field study, taking into account the reflection coefficients from horn emitters. In the course of the study, the causes and regularities of such a phenomenon as the reflection of electromagnetic waves from internal inhomogeneities of horn antennas were clarified, in order to reduce it. The given graphs of the dependence of the amplitudes of the reflected electromagnetic field on the observation angles show that the improvement of the alignment in the antenna path will cause an increase in the maximum signal amplitude in the transmission mode. According to the principle of inversion of antennas, such an arrangement will improve the absorption of waves of higher types directed to the openings of a single emitter or an equidistant antenna array. This will reduce the voltage standing wave factor and the level of side lobes. Therefore, the sounding radar station will receive a reduced level of the reflected signal, which will improve the defense of weapons samples that include a horn as a separate antenna or as part of equidistant linear phased antenna arrays. Keywords: phased antenna array; pyramidal horn emitter; reduction of the effective scattering surface; reflection coefficient.

Numerical Simulation on Microwave Melting of Hastelloy C-276

Melting of metals is of utmost importance in the manufacturing industry as it is the primary manufacturing process to obtain the desired shape and size. microwave melting is a novel technique that uses electromagnetic wave radiation to heat materials. In the present work, the melting of Hastelloy C-276 inside a multimode microwave applicator operating at 2.45 GHz and 900 W input power, is explored in numerical and experimental. This results in a significant reduction in processing time and leads to lesser material wastage. The distribution of temperature, electric field, and resistive losses was analysed to understand the microwave melting of the Hastelloy C-276 sample. The study revealed that the melting time taken was ~440 seconds for microwave melting of Hastelloy C-276.

ANALYSIS OF RESISTANCE OF CASSAVA TAPE BY EXPOSURE TO 1000 μT INTENSITY ELF MAGNETS

Extremely Low Frequency (ELF) electromagnetic waves are electromagnetic waves with a frequency range of 0 to 300 Hz. ELF electromagnetic wave radiation produces non-thermal effects on the biological objects used, meaning that it does not cause temperature changes when interacting with or inducing the system. Electromagnetic waves are waves that arise due to changes in electric fields and strong magnetic fields. This research aims to prove the effect of Extremely low frequency (ELF) magnetic field on the food resilience process. The research method used is experimental research method. This research was carried out in the basic physics laboratory at the University of Jember. Data collection techniques using observation. Based on the research, it can be concluded that ELF magnetic field radiation has the potential as an alternative method in increasing the nutritional value and durability of fermented food ingredients. Exposure to Extremely Low Frequency magnets with an intensity of 1000 μT for 45 minutes resulted in changes in pH value and physical quality that affect food durability in cassava tape.

Антенна импульсного георадара

Resistive-loaded dipoles of various lengths, for different frequency ranges, are widely used in GPR suvey of subsurface ground structures. At the same time, in most cases, a transmitter with a fixed pulse length is used, which does not always allow you to fully use the characteristics of the antenna. Directional antennas for high-power georadars with amplitudes of the generated signal of 5 kV and higher are considered. A method of matching a directional resistively loaded antenna with a transmitter, implemented using a gas-filled spark gap, is proposed, while some elements are transferred from the transmitter to the antenna and resistors of a resistively loaded dipole are part of a pulse generator. As a result, the antenna is aligned with the pulse duration and produces more efficient electromagnetic wave radiation. Also, the antenna design allows you to select the necessary directional pattern by selecting either the maximum of the main lobe, or maximize the side lobes. The use of a metal shield reduces the emission of electromagnetic radiation to the operator of the georadar, and may allow to increase the radiated power of classical georadars and, consequently, increase their dynamic range.

THE EFFECTIVENESS OF USING SCREENS ON COMPUTER MONITORS AGAINST EYE MUSCLE FATIGUE OF EMPLOYEES AT THE AMBON CITY EDUCATION OFFICE IN 2023

Eye fatigue is a somatic disorder in the ciliary muscle of the eye that is forced to work to see close objects for long periods of time. Computers as electronic devices use electrical energy and electromagnetic radiation waves that are harmful to eye health. The installation of Antiglare Screen on a computer monitor is believed to reduce complaints of eye muscle fatigue so it needs to be reviewed for the effectiveness of its use. It is known the effectiveness of using screens on computer monitors to reduce eye muscle fatigue of employees at the Ambon City Education Office in 2023. Quantitative research design with quasy experiment method. Using Simple Random Sampling technique as many as 30 respondents. Data collection techniques using questionnaires and interventions using screen monitors measured by the photostress recovery test method. The measurement results are analyzed by the repeated-measured anova statistical test. The average prevalence value of eye muscle fatigue ≥ 50 seconds before the screen installation intervention on a computer monitor. After the intervention, post-measurement of 1 right eye on the fourth day amounted to 14.833 seconds, the OR value was 0.028, for the left eye it was 14.633 seconds, the OR value was 0.001. Post measurement-2 of the right eye on the sixth day of 26.367 seconds of OR value of 0.026, for the left eye of 25.533 seconds OR value 0.016. Furthermore, Post measurement-3 right eye on day 10 amounted to 35,200 seconds OR value -0.001, for left eye 35,700 seconds OR value -0.038. There was a difference in the average fatigue of the eye muscles in three post-measurements using the photostress recovery test method. Post-measurement variable-3 on day 10 of the intervention using a computer monitor screen had an effect on reducing eye muscle fatigue. The longer respondents use antiglare screen, the less eye muscle fatigue. Although there were respondents who had refractive errors, the use of screen monitors was effective in reducing fatigue of the right eye OR (-0.001) and left eye OR (-0.038). Computer users must have occupational safety and health awareness in using computers. Pay attention to the arrangement of the workspace and optimize eye rest time by occasionally turning your eyes to the green area filled with trees outdoors.

Phase Engineering on Amorphous/Crystalline γ‐Fe2O3 Nanosheets for Boosting Dielectric Loss and High‐Performance Microwave Absorption

AbstractTo design and develop efficient microwave absorbents via phase engineering is still less studied. The unique properties caused by constructing heterophase structure hold the potential to strengthen absorbing capability toward microwave radiation. Herein, amorphous/crystalline γ‐Fe2O3 nanosheets (Fe‐H) are carefully fabricated through a controlled annealing process. The matched Fermi levels formed on both sides of the heterophase interface not only provides efficient interfacial polarizations but also facilitates the transport of electrons with less scattering over the whole Fe‐H nanosheets. Thereby, both of the conduction loss and dielectric polarization relaxation are promoted, leading to a strengthened attenuation toward electromagnetic wave radiation. The as‐synthesized Fe‐H sample exhibited a minimum reflection loss of ‐89.5 dB centered at a thickness of 2.00 mm, associated with an effective absorption bandwidth (reflection loss ≤ ‐10 dB) reaching 6.45 GHz. All of these behaviors are superior to its pure amorphous absorbent and bare crystalline counterpart. Furthermore, this heterophase engineering strategy is valid when extended to Co and Ni based oxides, suggesting its universality and generality for promoting microwave absorption. Henceforth, this study indicates a favorable potential of the synthesis and application of amorphous/crystalline materials as heterophase microwave absorbents.

The Effect of Microwave Radiation on the Solidification of C-S-H Gels: Its Influence on the Solidified Cement Mixtures.

The present paper deals with the properties of hardened cement mixtures that have been exposed to microwave radiation. Microwaves fall under electromagnetic waves (EMW), and the main reason for using EMW radiation is to accelerate the drying of concrete as well as to reduce the time required to obtain the handling strength after it is removed from the mould. This paper is divided into two main parts. In the first part, three sets of cement samples were made. One set of samples solidified naturally in air and the second and third sets of samples were exposed to EMW radiation, with different exposure times for each. The solidification was then stopped, and the representation of the major minerals was experimentally determined. The second part of the experiment focuses on the properties of the hardened cement mixtures, both in terms of strength and physical properties. The experiment was carried out on two sets of samples. Each mixture was exposed to EMW radiation, the main differences being the exposure time and the position of the samples relative to the EMW generator. The aim of the experiments is to determine the resulting mechanical properties of the samples in comparison with those that were subjected to normal solidification in air. The data from these experiments suggest that microwave radiation can be used to accelerate the curing of concrete specimens, obtaining the handling strength in a relatively short time, but a reduction in the resulting strength can be expected compared to the reference specimens.

Study of solid state plasma reconfigurable dipole based on SPiN diodes for high-integration communications

A new solid state plasma reconfigurable dipole based on surface PiN diodes is presented for high-integration communications in this paper. The proposed antenna consists of several solid state plasma diode elements, which use the microwave characteristics of solid state plasma to realize the radiation and reception of electromagnetic waves. The plasma diode is designed and fabricated on a silicon-on-insulator wafer, and its size is 50 × 100 μm2. Measured results show that the plasma region appeared to be metal-like (carrier concentration is exceeding 1018 cm−3) when a forward bias is applied, and its steady-state current can reach 0.02 A. Based on these results, a high-integration reconfigurable dipole is designed with two working states at 2.21 and 3.01 GHz, and the overall dimensions of this dipole are 40 × 40 mm2. Other radiation performances are also discussed in this paper, which lay a good foundation for further studies.

Fast parallel IGA-ADS solver for time-dependent Maxwell's equations

We propose a simulator for time-dependent Maxwell's equations with linear computational cost. We employ B-spline basis functions as considered in the isogeometric analysis (IGA). We focus on non-stationary Maxwell's equations defined on a regular patch of elements. We employ the idea of alternating-directions splitting (ADS) and employ a second-order accurate time-integration scheme for the time-dependent Maxwell's equations in a weak form. After discretization, the resulting stiffness matrix exhibits a Kronecker product structure. Thus, it enables linear computational cost LU factorization. Additionally, we derive a formulation for absorbing boundary conditions (ABCs) suitable for direction splitting. We perform numerical simulations of the scattering problem (traveling pulse wave) to verify the ABC. We simulate the radiation of electromagnetic (EM) waves from the dipole antenna. We verify the order of the time integration scheme using a manufactured solution problem. We then simulate magnetotelluric measurements. Our simulator is implemented in a shared memory parallel machine, with the GALOIS library supporting the parallelization. We illustrate the parallel efficiency with strong and weak scalability tests corresponding to non-stationary Maxwell simulations.

Tunable construction of fire safe and mechanically strong hierarchical composites towards electromagnetic interference shielding

Cotton fabric composites were designed to be protected by fire safe thermoplastic polyurethane (TPU) composites for developing electromagnetic interference (EMI) shielding polymer composites with superior mechanical properties. Herein, the as-prepared MXene was coated onto the fiber surface of cotton and then thermally compressed with TPU composites, which were filled with the sodium dodecyl sulfate modified layered double hydroxides functionalized the short carbon fiber hybrids through melt blending method. Then, a series of highly fire safe cotton/TPU hierarchical composites were constructed by a designed thermal compression technique. For instance, the obtained cotton/TPU hierarchical sample showed greatly reduced peak of heat release rate, peak of carbon monoxide production rate and peak of carbon dioxide production rate of TPU by 50.1%, 52.1% and 55.4%, respectively. Furthermore, the cotton/TPU hierarchical composites possessed the EMI shielding effectiveness of 40.0 dB in the X band and 54.6 dB in the K band. The mechanical property of the cotton/TPU hierarchical composites was also reinforced, where the elongation at break and toughness values of the TPU/SCF/mLDH1/C2 hierarchical composite were 21.47 and 18.30 times higher than those of pure TPU, respectively. These mechanically strong hierarchical composites have brought a promising attempt to broaden their practical application, removing the fire hazards and electromagnetic waves radiation from the environment.

Absorption‐Dominant Electromagnetic Interference Shielding through Electrical Polarization and Triboelectrification in Surface‐Patterned Ferroelectric Poly[(vinylidenefluoride‐co‐trifluoroethylene)‐MXene] Composite

AbstractExtensive utilization of electronic devices and wireless equipment require human to take affirmative measures to weaken unwanted electromagnetic wave radiations. Herein, a ferroelectric poly[(vinylidenefluoride‐co‐trifluoroethylene) (P(VDF‐TrFE)‐MXene]‐poly(3,4‐ethylenedioxythiophene) (PEDOT) multilayered film is developed that can increase electromagnetic interference (EMI) shielding performance through electrical polarization. The MXene is encapsulated by a P(VDF‐TrFE) matrix, which inhibits oxidation, and a highly conductive MXene is created conductive network resulting in enhancement EMI shielding effectiveness (EMI SE). Furthermore, the surface pattern inducing multiple scattering and PEDOT layer contributes to the increasing absorption due to the electrically conductive PEDOT. Thanks to the electrically polarized and negatively charged P(VDF‐TrFE)‐MXene, the composite film demonstrates superior EMI SE and absolute EMI SE (SSEt) are exhibited remarkable ≈61 dB and 15230 dB cm2g−1 with high absorptivity (0.87) at thickness of 120 µm in X‐band. Additionally, P(VDF‐TrFE)‐MXene composite film is applicable to motion and thermo‐resistive sensor due to the negatively charged P(VDF‐TrFE) and thermo‐resistive property of PEDOT, respectively, for multifunctionality. This work provides a feasible avenue for flexible absorption dominant EMI shielding materials via electrical polarization with remarkable EMI shielding performance.

Partial Discharge Wideband Full-Band High-Gain Resonant Cavity UHF Sensor Research.

To meet the real demand for broadband full-band high-gain antenna sensors in the process of partial discharge (PD) Ultra-High frequency (UHF) detection test and online monitoring of power equipment, this paper builds a resonant cavity monopole UHF antenna sensor based on Fabry-Perot resonant cavity antenna technology, conducts the sensor Voltage Standing Wave Ratio (VSWR) optimization study using curved flow technology, conducts the sensor gain optimization study using slot dual resonant structure, and, finally, tests the sensor performance using the built PD detection test platform. The resonant cavity monopole antenna exhibits outstanding VSWR performance in the frequency range of 0.37 GHz-3 GHz, according to simulation and test data: the average gain in the frequency range of 0.3 GHz-3 GHz is 4.92 dBi, and the highest gain at the primary resonant frequency of 1.0 GHz is 7.16 dBi, with good radiation performance over the whole frequency spectrum. The electromagnetic pulse signal sensed by the UHF sensor developed in this paper can demonstrate the energy spectrum distribution characteristics of PD radiation electromagnetic wave signal more comprehensively, laying a firm technical foundation for thoroughly understanding the electromagnetic wave radiation characteristics of various types of PD insulation defects of various power equipment and the selection of a specific direction for its supporting optimization.

Wistar Rat Parietal Lobe Cell And Pain Perception Changes After Frequent Of Mobile Phone Electromagnetic Wave Expose

Background: The increasing number of mobile phone users raises concerns about the effects. Mobile phone electromagnetic wave radiation harms pain perception due to granular cell changes in the cerebral parietal cortex. Objective: To determine the effect of exposure to electromagnetic waves mobile phone on pain perception due to changes in the granular cells of the cerebral parietal cortex Wistar rats. Methods: Experimental research using randomized posttest with control group design. Samples were 28 rats divided into 4 groups. The control group was not exposed, the treatment group was exposed to 2100 MHz electromagnetic waves for 2 hours/day with a distance of 3 cm for 15 days in treatment group 1, for 30 days in treatment group 2, and 45 days in treatment group 3. Measurement of pain onset using the hot method. Changes in pain threshold were taken from the difference in pain onset after exposure to before exposure. Granular cell changes in the cerebral parietal cortex were assessed from the total score with the provisions of normal cells (sumx0), hydropic degenerated cells (sumx1), and necrotic cells (sumx2). Results: The longer the exposure to mobile phones, the higher the pain threshold and the cerebral parietal cortex granular cell damage score. There was a significant difference in pain threshold and changes in cerebral parietal cortex granular cells between groups (p=0.000). There was a significant relationship between changes in the parietal cerebral cortex granular cells and pain threshold in Wistar rats exposed to electromagnetic waves (p=0.000). Conclusion: Exposure to mobile phone electromagnetic waves affects pain perception due to changes in the granular cells of the cerebral parietal cortex in wistar rats.

Seed-assisted in situ ZIF-8 growth on carbon nanofibers for enhanced microwave absorption

The design and preparation of excellent microwave absorbing materials is of great importance facing increasingly negative effects of electromagnetic (EM) wave radiation and interference. Combining metal-organic frameworks (MOFs) with one-dimensional (1D) carbon nanofibers is a valuable approach to improve microwave absorption performance. Herein, C/zinc oxide (ZnO) nanofiber composites were synthesized using the seed-assisted in situ electrospinning method, with the precursor being a zinc-based zeolitic imidazolate framework (ZIF-8). The unique porous structure and the heterointerfaces formed between C and ZnO facilitated the scattering and multiple reflections of microwaves. On account of the combination of interfacial polarization loss, dipole polarization loss and conduction loss, the C/ZnO nanofiber composites exhibited outstanding microwave absorption performance. The minimum reflection loss (RLmin) of −58 dB at 7.5 GHz as well as an effective absorption bandwidth (EAB) of 6.5 GHz was achieved. This work provides an innovative methodology for developing highly efficient microwave absorbing materials using a combination of carbon materials and MOF nanoparticles.

Multiple interfacial Fe3C/MnO/NC composites towards high-performance microwave absorption

Exploring high-performance electromagnetic wave (EMW) absorbers remains a formidable challenge in the face of severe EMW radiation and interference. The incorporation of manganese oxide into carbon matrix magnetic composites is proposed to enhance the EMW absorption properties in this work. Multiple interfacial ternary-component Fe3C/MnO/Nitrogen-doped carbon (NC) absorbers were synthesized through facile hydrothermal, oxidative polymerization and carbothermal reduction processes. The results indicated that the composites designed exhibit excellent EMW absorption properties, with an effective absorption bandwidth of 4.88 GHz (13.12–18 GHz) at a mere thickness of 1.5 mm. The outstanding performance of EMW absorption can be attributed to the effective modulation of electromagnetic parameters through a large number of heterogeneous interfaces, defects, and magnetic loss. Meanwhile, adjusting the filling ratios of the composites in the absorber also can significantly adjust the electromagnetic parameters of the samples. This work presents effective approach for the preparation of high-performance EMW absorbers with ternary components, as well as a strategy for developing novel broadband absorbers that are lightweight and have thin thickness.

Aura detection using thermal camera with convolutional neural network method for mental health diagnosis

Mental health is an important aspect in realizing overall health. For this reason, non-invasive medical equipment is needed for people with mental disorders. This study aimed to create a psychological health diagnostic tool by detecting auras using a thermal camera from facial objects. The contribution of this study is that the tool can detect the patient's aura without physical contact so that the patient is more comfortable and does not feel invaded. This research designed a system for detecting electromagnetic wave radiation energy emitted by the body using a thermal camera. Face detection in the input image was performed using a convolutional neural network (CNN) model single shot multibox detector (SSD), which is one of the CNN models that implements a bounding box to estimate the localization of detected objects. In this case, system testing was used to evaluate the performance of the CNN system algorithm for aura detection in terms of color (main color or average color). The results obtained were detectibility by 80%, selectivity by 88.88%, precision by 70%, sensitivity by 87.5%, and accuracy by 63.63%. The design of the aura detection system in this study will make it easier for psychiatrists and psychologists to help make a noninvasive diagnosis.