Introduction This application note demonstrates modelling of high power shielded cables in EMC Studio Hybrid Analysis Type. Multicore shielded cable with braided shield in car body is considered. Simulation Model Description Noise coupled from high power shielded cable to neighbour single cable is analyzed in frequency range from 1 MHz to 80 MHz. Main part […]

Introduction Simulation Model Description Results Difference between obtained capacitance matrices for PCB with and without conversion adapter is shown below: Difference between obtained capacitance matrices for PCB with and without conversion adapter is shown below:

Introduction This application demonstrates effect of parasitic RLC parameters on forward transmission coefficient (S21) in GSM band Signal Amplifier. Simulations are performed in EMCoS PCB VLab and EMC Studio. Parasitic effects are considered separately for all conductive traces along main signal path. This realistic model is compared to ideal case when wires only connect functional […]

Introduction This document demonstrates modeling of Printed Circuit Boards (PCB) with Green Function approach using new powerful tools of EMCoS PCB VLab and EMC Studio. In conjunction, these two products make it easy to build a full simulation chain for various types of PCB models. In this application note Four-way Microstrip Wilkinson Power Divider modeling […]

Introduction This document demonstrates modeling of Printed Circuit Boards (PCB) with Green Function approach using new powerful tools of EMCoS PCB VLab and EMC Studio. In conjunction, these two products make it easy to build a full simulation chain for various types of PCB models. In this application note Three-pole Hairpin-line Microstrip Bandpass Filter modeling […]

Introduction This document demonstrates modeling of Printed Circuit Boards (PCB) with Green Function approach using new powerful tools of EMCoS PCB VLab and EMC Studio. In conjunction, these two products make it easy to build a full simulation chain for various types of PCB models. This application note considers case of power Inverter PCB and […]

Anechoic chamber performance can be significantly improved if microwave absorbers with optimized characteristics will be installed over the entire inner surface of shielded room. The selection criteria for absorbers may include the attenuation levels for normal and oblique incident angles, operating frequency, bandwidth, type of bulk materials, size, shape, weight and etc. Analysis of Pyramidal […]

Simulations with Anechoic Chamber Absorbing properties of inner covering of anechoic chamber are poor at frequencies below 30 MHz. This fact makes neglecting of walls in computational model incorrect. Construction of computational model of anechoic chamber at low frequencies and analysis of field structure is performed. Find the full article in the pdf-file.

Capacitive Voltage Probe (CVP) is a measurement device for electromagnetic disturbances around multi-wired cables. Construction of equivalent circuit model for the test setup and comparison with fullwave MoM results is performed. Find the full article in the pdf-file.

Electrostatic discharge, caused by charge accumulation on the object surface, may upset the normal operation of an electronic system, causing equipment malfunction or failure. Simulation of ESD test according to IEC standard is performed and compared with measurement data. Find the full article in the pdf-file.

Introduction The radar range equation expresses the range at which a target may be detected with a given probability by a radar having a given set of parameters. This equation includes the target radar cross section (RCS), which is a measure of the proportion of the incident energy reflected back to the radar. This returned […]

Introduction Investigation of optimal antenna position, analysis of near/far fields generated by antennas placed on large structures (like ships, aircrafts, etc.) plays important role in onboard antennas design and installation. This application demonstrates analysis of Yagi-Uda antenna placed on naval ship simulated at 200 MHz frequency. Simulation Model Description Design of Yagi-Uda Antenna Frequency Characteristics […]

Introduction Investigation of electromagnetic signatures produced by ships in Earth’s magnetic field plays important role in naval ship design. These signatures need to be kept below safe levels. The main source of the static magnetic field of a ship is ferromagnetic material used for construction. If this magnetic signature is measurable in the local magnetic […]

Introduction This application demonstrates Radar Cross Section (RCS) calculation for simple shapes including the NASA almond, ogive, double-ogive, cone-sphere and cone-sphere with gap. Simulation data is compared with published measurements data from A. C. Woo, H. T. G. Wang, and M. J. Schuh, “Benchmark Radar Targets for the Validation of Computational Electromagnetics Programs,” IEEE Antennas […]

Introduction Simulation Model Results The RCS for both horizontal and vertical polarization is plotted in dBSM as a function of the azimuthal angle for 300 MHz and 1 GHz: Scattered electric field distribution on aircraft IA-63 Pampa for both horizontal and vertical polarization is shown below for 1 GHz frequency. Comparison of RCS calculated with […]

Introduction This application demonstrates combination of MoM and physical optics approach (PO) on simulations of electrically large problems. Magellan spacecraft is fed by horn pattern at frequency 3 GHz. Simulations are performed using PO solution. Design of Horn Antenna The optimum parameters of the horn antenna for parabolic reflector were chosen. These parameters depend on […]

Introduction EMC Studio provides comprehensive analysis capabilities of EMI/EMC problems arising in aerospace systems. This includes: antenna to antenna coupling analysis; antenna placement considerations; lightning interaction with aircraft; analysis of cross talk problems between cables; field scattered analysis; EMI/EMC of printed circuit boards in aerospace systems; electromagnetic shielding analysis. This application note considers aircraft model […]

Voltage coupled into onboard cable from EMP stroke is calculated and analyzed. Find the full article in the pdf-file.

Introduction Investigation of cross-talk between cables plays important role in EMC (Electromagnetic Compatibility) analysis. EMC Studio provides effective computational techniques based on Lumped Circuit Transmission Line (LCTL) method for simulation of complex cable structures represented as Multi-Transmission Lines (MTL). In the general case, non-uniform multi-conductor line can be modeled as assembly of segments. Each segment […]

Introduction This application note considers coupling from radiating PCB to cable in car model. Near Field Sorce approach based on equivalence principle is used. Simulation Workflow Near Field Source Simulation Model Description Results Voltage coupled into the cable from PCB modeled as near field radiation source in the front part of the vehicle is shown […]

Introduction The rapid increase in the number of integrated glass antennas strengthens demands for electromagnetic compatibility (EMC) of such antennas to each other, vehicle wiring, electric equipment and the body of the vehicle itself. For effective simulation of complex automotive glass antennas EMC Studio / EMCoS Antenna VLab provides special tools for full modeling chain: […]

Construction of complicated simulation model can be simplified by representation of radiating parts of the system as closed field surfaces surrounding them. Voltage coupled from the ECU in the car represented as Near Field Source is calculated and compared with results of fullwave MoM solution. Find the full article in the pdf-file.

Influence of radiation from cell phone to the human is an important investigation field. Simulations of exposure of human phantom by cell phone in car model are performed. Find the full article in the pdf-file.

Many applications require dual-polarized operating antennas including wireless communication, broadband stations and cell towers. Dual polarized antennas excite two orthogonal modes, which generate the vertically polarized electric field and the horizontally polarized electric field.
This application demonstrates simulation of GSM dual polarized antenna at 1.9 GHz.

The triangular shaped fractal, Sierpinski gasket monopole antenna is considered. Structure of this antenna is intended to be used for four discrete frequency bands. Simulated resonance frequencies of the Sierpinski gasket monopole antenna are compared with analytical solution.

Smart Entry System is one of most popular safety systems. Smart Entry allows driver to open the door and activate some electrical systems while being outside the vehicle. Fields radiated by antenna located near car at frequency 125 kHz are simulated and analyzed.

Microstrip patch antennas are among the most common antenna types in use today, particularly in the popular frequency range of 1 to 6 GHz. Examples of Patch Antenna modeling within EMC Studio are presented.

The part of complex automotive harness is considered above finite metallic plate. Interaction of cable harness with glass antenna is calculated and compared with measurements.

Simulation of interaction between cable system and antenna requires accurate modeling of each component of the system. Radiation from TWP to planar glass antenna is considered. Simulations are compared with measurements.

Radiation from TWP to monopole antenna is considered. Simulations are compared with measurements.