Optimal Operating Frequency Research Articles

Towards Advancing Real-Time Railroad Inspection Using a Directional Eddy Current Probe

In the field of railroad safety, the effective detection of surface cracks is critical, necessitating reliable, high-speed, non-destructive testing (NDT) methods. This study introduces a hybrid Eddy Current Testing (ECT) probe, specifically engineered for railroad inspection, to address the common issue of “lift-off noise” due to varying distances between the probe and the test material. Unlike traditional ECT methods, this probe integrates transmit and differential receiver (Tx-dRx) coils, aiming to enhance detection sensitivity and minimise the lift-off impact. The study optimises ECT probes employing different transmitter coils, emphasising three main objectives: (a) quantitatively evaluating each probe using signal-to-noise ratio (SNR) and outlining a real-time data-processing algorithm based on SNR methodology; (b) exploring the frequency range proximal to the electrical resonance of the receiver coil; and (c) examining sensitivity variations across varying lift-off distances. The experimental outcomes indicate that the newly designed probe with a figure-8 shaped transmitter coil significantly improves sensitivity in detecting surface cracks on railroads. It achieves an impressive SNR exceeding 100 for defects with minimal dimensions of 1 mm in width and depth. The simulation results closely align with experimental findings, validating the investigation of the optimal operational frequency and lift-off distance for selected probe performance, which are determined to be 0.3 MHz and 1 mm, respectively. The realisation of this project would lead to notable advancements in enhancing railroad safety by improving the efficiency of crack detection.

ESTIMATION OF THE AVERAGE GRAIN SIZES IN METAL AND THEIR DISPERSION BY CHANGING THE AMPLITUDES OF BOTTOM ECHOES OF LONGITUDINAL WAVES WITH A DIFFERENT NUMBER OF REFLECTIONS

A model (algorithm) has been developed for estimating the average size of a metal grain and the spread of its magnitude (standard deviation) according to experimental values of attenuation coefficients due to scattering of longitudinal waves on grains determined by the ratio of the amplitudes of bottom echoes (of the first and higher order) at three frequencies using a table of values of the difference between experimental and calculated values of attenuation coefficients. Computer modeling of the pulse amplitude differences of the 1st and 3rd bottom echoes for normal probe models with nominal frequencies of 5.0, 7.5 and 10.0 MHz and two variants of grain parameters used to test the specified algorithm has been carried out. The results obtained make it possible to choose the optimal operating frequency for metal control by a normal probe based on the estimated value of attenuation of longitudinal waves, determined by the average size of metal grains and the value of its magnitude spread.

Frequency tunable non-invasive microwave blood glucose sensor based on negative impedance circuit

Abstract This article proposes a frequency adjustable non-invasive blood glucose microwave sensor based on negative impedance circuit. Firstly, this article establishes a skin-blood-skin human tissue model for the detection of non-invasive microwave sensors. Compared to traditional passive microwave blood glucose sensors, this design uses a negative impedance compensation circuit (NIC), greatly increasing microwave penetration and improving its detection sensitivity. In addition, this design achieves the goal of adjustable operating frequency by adding an additional dielectric layer at the detection end. This function is of great significance for microwave non-invasive blood glucose sensors. On the one hand, it can adjust to the optimal operating frequency band according to the characteristics of blood glucose changes; On the other hand, it is possible to measure changes in blood glucose concentration at multiple frequency points, thereby increasing the accuracy of detection. The relevant results show that adjusting the frequency band can reach 1–4 GHz, and the specific method of frequency adjustment is provided in the article; Meanwhile, four initial frequency points were selected in the article, at which the results show that the sensitivity reaches 1.356 × 10−3, 3.142 × 10−3, 2.071 × 10−3, 1.903 × 10−3. The above results demonstrate the superiority of our design, and blood glucose sensors based on this principle are expected to break through the limitations of current blood glucose sensors.

Total and scattered field decomposition technique in mixed FETD methods and its applications for electromagnetic cloaks

In this paper, we apply the total and scattered field plane wave excitation method to the mixed finite element time-domain (FETD) method for solving Maxwell’s equations to compute the scattered field of electromagnetic cloaks. This method can quantify the performance and operating frequency range of the cloak. We also present a mixed FETD scheme, which is coupling with perfectly matched layers technique. It can deal with various physical quantities more flexibly when solving the scattered field of complex dispersive media. Numerical results confirm the effectiveness of our algorithm, and quantify the performances of our electromagnetic cloaks at different frequency. We can conclude that the farther the incident wave’s frequency is from the cloak’s optimal operating frequency, the worse its performance.

Optimal Design of a Single-Phase Bidirectional Rectifier

This article outlines the comprehensive design and control approach for a single-phase bidirectional rectifier (SPBR) used in bidirectional charging of electric vehicle batteries. The operational parameters of the inverter are determined through a thorough analysis of all switching sequences to accurately assess power losses, considering the type of switching device chosen in each case, enabling proper component sizing, and understanding converter efficiency. An exclusive electronic control circuit is examined, governing two converter operation modes: boost rectifier with power factor correction (PFC) and sine pulse inverter width modulation (SPWM) with a minimum number of adjustments made automatically. One problem that arises when addressing the design of an SPBR is determining the operating frequency. To address this issue, this study offers to conduct a comparative analysis of losses using various power devices and magnetic circuits to determine the optimal operating frequency for achieving maximum energy efficiency. To validate the design’s feasibility, a prototype with 10 kW output power was constructed, achieving a peak efficiency of approximately 97.5% in both directions, unity power factor (PF), and total harmonic distortion (THD) of less than 7% during full power operation.

Feasibility Study for Monitoring an Ultrasonic System Using Structurally Integrated Piezoceramics

This paper presents a new approach to monitoring ultrasonic systems using structurally integrated piezoceramics. These are integrated into the sonotrode at different points and with different orientations. The procedure for integrating the piezoceramics into the sonotrode and their performance is experimentally investigated. We examine whether the measured signal can be used to determine the optimal operating frequency of the ultrasonic system, if integrating several piezoceramics enables discernment of the current vibration shape, and if the piezoceramics can withstand the high strains caused by the vibrations in a frequency range of approximately 20–25 kHz. The signals from the piezoceramic sensors are compared to the real-time displacement at different points of the sonotrode using a 3D laser scanning vibrometer. To evaluate the performance of the sensors, different kinds of excitation of the ultrasonic system are chosen.

Research on variable stiffness asymmetrical resonant linear piezoelectric actuator based on multi-modal drive

In this paper, a linear piezoelectric motor with variable stiffness and asymmetric resonance is proposed, which is driven by a single harmonic signal. Working in the resonant state improve the output performance of the motor. Motor control is relatively simple and can realize reverse movement under the driving of second-order single harmonic signal. At the same time, the new motor can obtain different operating speed and step distance by changing the clamping position in front and back to meet the requirements of different loads and different working conditions and has strong applicability. By experiment, the first-order optimal operating frequency of the motor prototype at three different stiffness adjustment positions is 88 Hz, 90 Hz and 92 Hz respectively. Under the excitation of 240 Vp–p first-order resonance signal, the corresponding output speed of the motor prototype is 16.116 mm s−1, 20.457 mm s−1 and 25.015 mm s−1 respectively, and the corresponding displacement resolution is 0.18 mm, 0.22 mm and 0.27 mm respectively. When the stiffness adjustment positions is 2 mm, the maximum load of the motor prototype reaches 450 g. The second-order optimal operating frequency at the stiffness adjustment positions 1 mm is 601 Hz. Under the excitation of a 240 Vp–p second-order resonant signal, the reverse output speed of the motor prototype is 13.126 mm s−1, and the corresponding displacement resolution is 0.02 mm.

Kirigami-inspired deployable mechanisms with a type-preserving feature and controllable Poisson’s ratio

A spatial deployable mechanism is capable of adapting to different operating requirements by adjusting its shape and size. However, most current deployable mechanisms fail to maintain the type of their reflective surface during the folding process, which limits their ability to adjust the optimal operating frequency. To address this issue, this paper presents a novel design of a deployable mechanism with a type-preserving feature inspired by kirigami techniques. By preserving the type of its reflective surface, this mechanism allows for the adjustment of the optimum operating frequency according to specific requirements. This makes it well-suited for deployment on commercial satellites that undergo constant mission variations. The mechanism is constructed using porous kirigami cells, ensuring that the type of the working surface is maintained throughout the deployment process. The construction of deployable units and networks based on porous cells is also discussed. Additionally, deployable mechanisms with controllable Poisson’s ratios are developed. The kinematics of the mechanism are analyzed to verify the type-preserving characteristics. Finally, four case studies are conducted to illustrate and validate the proposed design and analysis.

EMC of Inductive Automotive Charging Systems According to Standard SAE J2954

To increase the acceptance of electric vehicles (EVs), inductive charging technology can be an important tool because of the simplified charging process for the user. This paper presents the fundamentals of wireless power transfer (WPT) for EVs, while focusing on electromagnetic compatibility (EMC). This work deals with the investigation of the conducted and field-bound interference emissions using a WPT system with a max. input power of 3.6 kW. During the research, a new frequency-tracking algorithm is developed, to find the optimal operating frequency at any coil misalignment. The impedance behavior as well as the possible interference paths are investigated, showing the great geometric influence of the test bench setup. The conducted interference currents are analyzed and subsequently filtered. The filter shows good performance in attenuating common mode currents. The measured radiated magnetic field is directly rated against the proposed limits of various standards. Finally, the EMC influence of the direct current (DC) power supply line to the inverter is examined, which is not defined precisely in the standard. This underlines the significance of a standardized test setup, since the limit values can be met under different geometric circumstances of the DC cable.

Characterization of an Impedance-Type Humidity Sensor Based on Porous SnO2/TiO2 Composite Ceramics Modified with Molybdenum and Zinc.

In this study, we report on the room-temperature characteristics of an impedance-type humidity sensor based on porous tin oxide/titanium oxide (SnO2/TiO2) composite ceramics modified with Mo and Zn. The SnO2/TiO2-based composites synthesized in the solid-state processing technique have been structurally characterized using X-ray diffraction, scanning electron microscopy, energy dispersive, and Raman spectroscopy. Structural analysis indicated the desired porous nature of the synthesized ceramics for sensing applications, with an average crystallite size in the nano range and a density of about 80%. The humidity-sensing properties were evaluated within a wide relative humidity range from 15% to 85% at room temperature, and the results showed that a better humidity response had a sample with Mo. This humidity-sensing material exhibits a linear impedance change of about two orders of magnitude at the optimal operating frequency of 10 kHz. Furthermore, fast response (18 s) and recovery (27 s), relatively small hysteresis (2.8%), repeatability, and good long-term stability were also obtained. Finally, the possible humidity-sensing mechanism was discussed in detail using the results of complex impedance analysis.

Analysis of the electromagnetic availability of radio signal sources during propagation in the ionosphere radio channel

Problem statement. Multi-channel automated short-wave radio communication networks are used to provide information support for the activities of critical facilities and the organization of information exchange between subscribers assigned to a large area, as well as the control of aircraft when flying at transcontinental ranges and sea vessels in remote areas of the world ocean. The probabilistic-temporal characteristics of the effectiveness of monitoring their dynamic states largely depend on the electromagnetic availability of radiation sources. The conditions of their electromagnetic availability must be determined by the values of the maximum applicable frequency and spatial-energy characteristics of the signals in the ionosphere radio channel. Time periods of stable reception must be set taking into account possible changes in ray trajectories and fading (fading) of signals due to refraction in ionized layers of the atmosphere during daily and seasonal fluctuations of electrical parameters. To determine the current values of the radio channel parameters, the International Reference Model of the Ionosphere and GOST 25645.146-89 “Earth's Ionosphere. Model of the global distribution of concentration, temperature and effective frequency of electron collisions”, which reflects the patterns of distribution of average values of the electron concentration in the Earth's ionosphere at different times of the year and day with changes in solar and geomagnetic activity. Goal. Evaluation of the electromagnetic availability of short wave emitters for monitoring posts based on a rational choice of operating frequencies and finding the spatial and energy characteristics of signal reception. Results. A predictive model has been developed for assessing the electromagnetic accessibility of radio signal sources by the values of the maximum applicable frequency and spatial and energy characteristics during propagation in the ionosphere radio channel. The profile of the ionized layers of the atmosphere and the structure of radio channel undergo changes depending on the mutual position of the Earth and the Sun, as well as solar activity and the latitude of the observation site. In the profile of the ionized structure of the atmosphere, four characteristic regions are conventionally distinguished – layers D, E, F1, F2. Due to the intrinsic fluctuations in the parameters of ionized layers under the influence of a large number of factors, ground-based complexes of vertical (inclined) sounding and a satellite system for observing the ionosphere do not provide the required reliability of data on its state in real time for the entire surface of the Earth. Based on certain values of the optimal operating frequencies and inclination angles of the ionosphere wave ray trajectories, the time intervals of the electromagnetic availability of transmitters located in different regions in the summer and autumn-winter periods were found. Based on the estimates of the maximum applicable signal frequencies in the ionosphere radio channel using an azimuth-elevation detector-direction finder located in the Central Federal District, the angles of inclination of the trajectories when receiving radio station signals meteorology information of airfield networks of the Russian Federation and neighboring countries were determined. The detector-direction finder used an active antenna array of 16 asymmetric vibrators 2.5 m high, located on an area of 200×200 m, and synchronized coherent radio devices with frequency conversion. Measurements were carried out in the Doppler ray separation mode when selecting signals at matching frequencies was carried out in accordance with the time schedule for the operation of radio stations. On routes with a length of about 1000 km, variations in the directions of arrival of signals along the elevation angle with 3 reflections from the ionosphere reach 15...20°, and in the azimuth plane - up to 4...5°. On routes with a length of more than 1000 km, the fading of signals is determined by the interference of beams commensurate in level; on routes with a length of more than 2000 km, as a rule, one beam prevails, and fading is due to a change in its heterogeneous-style in time. Practical significance. The predictive model for analyzing the electromagnetic availability of radio emission sources makes it possible to select the modes of operation of monitoring posts with the establishment of a period of time with the best conditions for receiving signals in given areas, based on the values of the maximum applicable frequency of radio channels and the angles of arrival of a sky wave with the highest power. The obtained results form the basis for improving the technology of monitoring the radio-electronic situation when receiving signals propagating over the ionosphere radio channel, and justifying the tactical and technical requirements for the characteristics of high frequency range direction finders.

Design and development of a piezoelectric-hydraulic hybrid actuator with quarter-wavelength tubes

The piezoelectric hydraulic actuator is a hybrid device consisting of a hydraulic pump driven by a piezoelectric stack connected to a hydraulic cylinder. For this type of piezoelectric actuator, the inertial force caused by the flow pulsation of the liquid will inhibit the movement of the piezoelectric vibrator and reduce its output performance. To solve these issues, two tubes were embedded into the piezoelectric-hydraulic hybrid actuation system for the first time to act as mechanical bandstop filters by interfering with the propagation of acoustic waves. The acoustic power transmission loss of the tube is derived from the one-dimensional wave equation. According to the experimental results, when the excitation frequency is close to the optimal operating frequency corresponding to the tubes, the liquid pulsation rate is reduced, the influence of inertial force on the actuator is weakened, and the output performance is relatively significantly improved. This strategy finally leads to a maximum no-load velocity of 153.5 mm s−1 and a maximum blocking force of 261.5 N for the hybrid actuator with 300 mm tubes; the maximum no-load velocity and blocking force of the hybrid actuator with 500 mm tubes are 94.45 mm s−1 and 230 N, respectively. Furthermore, this strategy can be used in other electrohydraulic actuators to enhance their capabilities.

Bidirectional motion characteristics of resonant inertial impact rotating piezoelectric motor based on self-clamping structure

A new working principle for multimodal excitation of a resonant bidirectional rotary inertial impact piezoelectric motor with a self-clamping structure was developed based on previous research on piezoelectric motors. Unlike previous piezoelectric motors that relied on single harmonic waves for unidirectional rotation, in this motor, we can simply change the driving signal characteristics of the motor without changing the structure of the piezoelectric motor to excite multiple vibration modes, thereby achieving rotation in both directions. Compared with other bidirectional resonant motors, the structure and control signal are simpler. The finite element simulation software COMSOL5.5 was used to simulate the working mode of the motor, and the results were in good agreement with the final experiment. During the experiments, the optimal operating frequency of the motor prototype was 900 Hz. The maximum output speed of the motor prototype was 3.9 rad/s, the maximum output torque was 15 N mm, and the maximum resolution was 0.248° under the conditions of 240 Vp-p voltage, 900 Hz frequency, and 7.8 N mm preload torque.

A 0.9 V wideband SPLL with an adaptive fast‐locking circuit achieving 24.68 µs settling time reduction

AbstractA low‐power wideband self‐biased phase‐locked loop (SPLL) is proposed for multi‐protocol SerDes applications in this letter. With the proposed adaptive fast‐locking current circuit (AFLCC) and self‐biased charge pump (CP), the settling time is reduced significantly, and no extra power and jitter contribution. In addition, a start‐up module is adopted to reset the system to an optimal initial operating frequency quickly. The proposed 1‐3‐GHz SPLL, fabricated in TSMC 28‐nm CMOS process, occupies a compact 0.028 mm2 area. It achieves a roughly constant settling time of 5 μs over all frequencies and division ratios range. Only 0.96 mW is consumed at 1 GHz frequency.

Liquid metal-based plant electronic tattoos for in-situ monitoring of plant physiology

Flexible plant sensors, as a noninvasive and real-time monitoring method for plant physiology, are becoming crucial for precision agriculture. However, integrating flexible devices with plants are challenging due to their fragility and complex surfaces. In this study, we introduce a liquid metal-based plant electronic tattoo (LM-PET) that can harmlessly and continuously monitor the loss of water content and plant electrical signals, which are critical parameters for analyzing plant physiological status. The LM-PET achieves double-sided conductivity through soluble electrostatic spinning films and transferring technology, effectively addressing the issue of mismatch between the rigid interface of electronic devices and the surface of delicate plants. The fabricated tattoo electrode can adhere tightly to the leaf surface for a long time and can significantly broaden the scope of moisture monitoring, even in cases of severe wrinkling caused by water loss. At the optimum operating frequency of 100 kHz, the sensitivity of LM-PET can reach 25.4 kΩ%−1. Thus, LM-PETs can record the electrical signals generated when abiotic stresses threaten plants. They are also significant in providing a deeper understanding of the drought adaptation mechanisms of plants and developing drought-resistant varieties. They offer data-driven crop management and decision-making guidance, which is imperative for advancing precision agriculture. Overall, our findings provide valuable insights into the performance of agricultural inputs and facilitate real-time monitoring of plant growth and development.

A resonant inertial impact rotary piezoelectric motor based on a self-clamping structure

A resonant inertial impact rotary piezoelectric motor based on a self-clamping structure is designed, assembled, and tested. The designed piezoelectric motor mainly includes a rotor (two vibrators, preload mechanism, and intermediate connection mechanism), a clamping mechanism, and another auxiliary mechanism. The piezoelectric ceramic sheet on the rotor drives the vibrator to swing under the excitation of a single harmonic wave. Because there is a clamping mechanism formed by the combination of clamp baffle and fixed clamp ring, thus the half-cycle resonant rotation of the rotor can be effectively completed, and repeated harmonic excitation can realize the unidirectional continuous rotation and swing of the rotor. The whole excitation process of the motor is in a resonance state, which has significant advantages, such as low friction and simple structure, compared with the traditional quasi-static piezoelectric motor. The structure of the piezoelectric motor is designed and analyzed using COMSOL5.5 software and then the motor performance is tested and analyzed by building an experimental platform to verify the feasibility of the motor design. The final experimental results show that the optimal working frequency of the piezoelectric motor is 150 Hz, which is consistent with the characteristic frequency of the simulation. When the motor prototype is under the conditions of optimal operating frequency 150 Hz, voltage 240 Vp-p, and preload torque 7.8 N.mm, the maximum angular speed can reach 2.4 rad/s, the maximum load can reach 27.8 N mm and the maximum resolution of the movement angle can reach 0.941°.

Frekventno regulisani pogon vibracionih sita sa debalansnim pobuđivačima - praktična realizacija i eksperimentalni rezultati

The paper presents a practically realized technical solution for frequency control of the AC power drive of vibrating sieves based on unbalanced vibration exciters. The operation of vibrating screen used in the industry for sieving and separating material fractions of different granulations is determined to a significant extent by the tilting angle of the vibrating sieve, its amplitude, the angle of attack of the excitation force and the frequency of oscillation. The frequency control of the vibrating sieves drive in this particular case made it possible to obtain the amplitude-frequency (AF) characteristic of the vibrating screen and based on it, the optimal operating frequency, which ensures the best separation of individual material fractions was determined. The solution was applied to two process lines in silos for deashing in the system of transport and separation of boiler slag from ash at the Thermal Power Plant "Nikola Tesla" B (TPP-B) in Obrenovac. The paper presents the key experimental results that were obtained during exploitation and testing of two implemented systems of regulated vibrating sieves.

Operational forecasting of optimal operating frequencies for long­range radio communications under the influence of non­fluctuating interference

The analysis of the methods of moving average and moving median, which are widely used to build empirical models for forecasting optimal operating frequencies, is carried out. The reasons for the resulting distortions are shown. The methodological bases for processing the results of discrete observations developed for the operational forecasting of the values of optimal operating frequencies for a dedicated radio communication channel under the influence of non-fluctuating interference are described. The spectral analysis used to calculate the mathematical expectation shows that, due to averaging, such models do not make it possible to detect the influence of external sources of perturbation on the ionosphere. That is, in the case of such averaging, together with the random component, which is zero, the effect of ionospheric non-fluctuating disturbances on radio communications is excluded from consideration. To account for the influence of ionospheric disturbances in a standard ionosphere model, these non-fluctuational disturbances are added separately. In addition, in geophysics, much attention is paid to the calculation of various averages for days, months, years, etc. It is important to establish to what extent the results obtained can be free from insurmountable distortions due to discretization. A condition for the extrapolability of the process is its spectrum limitation, so to obtain a limited spectrum, the observation data must be subjected to digital low-pass filtering (instead of the operations of equal-weighted averaging or moving median). For the initial data processing, it is suggested to connect two filters in series: a continuous weighted averaging and an ideal low-pass filter. The Chebyshev filter is the best fit for the characteristics of the corrected continuous averaging filter. Using the method of digital extrapolation, a method for forecasting observation data is presented. The conditions of extrapolability of the real process are given. A set of programs for realizing the forecast of optimal operating frequencies in real time has been developed.

Measurement of Plate Thickness Based on the Optimal Unidirectional Generation of Ultrasonic Waves Using Dual Electromagnetic Acoustic Transducer

Unidirectional generation of shear horizontal (SH) ultrasonic guided waves can be achieved using dual-coil electromagnetic acoustic transducers (EMATs), through the interference mechanism when appropriately phased signals are used to drive each EMAT coil. Optimal unidirectional generation requires precise knowledge of the intended wave mode dispersion curve, which in turn, depends on the plate’s thickness. In this paper, we exploit optimal unidirectional generation with a dual-EMAT in order to measure plate thickness. The proposed thickness measurement method uses a dual periodic permanent magnet (PPM) EMAT, acting as transmitter, and two conventional PPM EMAT receivers on opposite sides of the transmitter, in order to receive the forward (enhanced) and backward (weakened) generated SH ultrasonic guided waves. Then, two consecutive frequency sweeps are used to generate the SH0 and SH1 modes, in order to seek the maximum ratio of the forward travelling wave amplitude to the backward travelling wave amplitude. The first sweep determines the optimum operating frequency for the first wave mode, which is a necessary parameter for the next sweep. The second frequency sweep determines the plate thickness. The new method was initially evaluated with a frequency-wavenumber-domain analytical model. The proposed method showed a much higher frequency-specificity, which was assessed by a quality factor figure of merit defined by the ratio of the centre frequency to the -3 dB frequency bandwidth, when compared to that obtained using the conventional method that is based solely on the amplitude of the generated wave, and is therefore less susceptible to error in the thickness estimation. The method was experimentally evaluated with a dual-PPM EMAT on aluminium plates, showing good agreement with simulations and providing more than ten-fold higher specificity than the conventional method, and accurate thickness measurements, with an error lower than 0.8%.

Акустический способ передачи информации в устройстве горизонтального направленного бурения

An acoustic method has been developed for transmitting information about the coordinates of the drill head during the operation of a horizontal directional drilling device during the project laying of communications. The paper considers the traditional technology of horizontal directional drilling, and the electromagnetic method of transmitting information in trenchless laying of communications. An acoustic channel for information transmission has been studied in terms of asynchronous data transmission. The temporal structure of the signal, as well as the structure of the byte issued in acoustic transmission of information, have been developed. The optimal operating frequency of the transceiver system was chosen and the capacity of the acoustic information transmission channel was evaluated. The requirements for the modulator-demodulator of signals of an acoustic information transmission system are determined, the simulation of the propagation of an information package is carried out, taking into account the resonant properties of the converter using the Multisim circuit simulation package. For modeling, an equivalent circuit has been developed that forms an information package in the form of a chess code.