Electromagnetic simulation is an advanced technology to yield high accuracy analysis and design of complicated microwave and RF printed circuit, antennas, high-speed digital circuits and other electronic components. Much improvement has been achieved in the IE3D since then. The IE3D has become the most versatile, easy to use, efficient and accurate electromagnetic simulation tool. In the recent years, we have improved IE3D significantly.

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Electromagnetic simulation is an advanced technology to yield high accuracy analysis and design of complicated microwave and RF printed circuit, antennas, high-speed digital circuits and other electronic components.

Much improvement has been achieved in the IE3D since then. The IE3D has become the most versatile, easy to use, efficient and accurate electromagnetic simulation tool. In the recent years, we have improved IE3D significantly. The AGIF flows simplify the model creation process significantly.

By just one click, a user can build a complicated layout consisting of wire bonds, vias, ground and plane planes with thickness and solder balls, pin vias into some 3D models suitable for IE3D full-wave EM simulations. In IE3D Recent advancement in microwave, wireless, RF and semiconductor technologies require EDA imposes new challenging to circuit designers. New development requires higher accuracy and reduced design cycles. The FastEM Design Kit allows users to get high accuracy full-wave designs done in realtime at design time.

It significantly reduces the design efforts and improves the quality of high frequency designs. The IE3D V12 also improves the simulation speed by a factor of 4 or more. It supports multi-CPU and multi-core computers. On IE3D 12, we have implemented automatic extraction and optimization of lumped circuit equivalent circuit from IE3D simulations. Full-wave EM tuning, optimization and synthesis require users to parameterize structures. To simplify the parameterization process and enhance the capability of parameterization, we have further improved our schematic-layout editor, or the IE3Dlibrary.

We have introduced equation-based geometry modeling in IE3Dlibrary On IE3Dlibrary V14, we have implemented guides for easy locating objects. We have also implemented different ways of high-lighting and accessing the objects to make IE3Dlibrary easy to use.

What are the major features of IE3D V 1 IE3D integrated design environment: We have integrated polygon layout editor, s-parameters visualization and post-processing, current distribution, near- field and far visualization into one single package, FastEM real-time EM tuning and optimization in one package.

Users can do most of the design works in one single piece of the software. The simulation results will be become unstable below some low frequency limit. The limit is structure dependent. On IE3D V14, we have implemented an advanced feature allowing accurate and robust simulation of structures down to 1 Hz. IE3D allows accurate simulation of high frequency structures. It also allows users to shift the reference plane of an isolated port accurately and efficiently.

This limitation makes design procedure less convenient for deembedding of structure discontinuities. IE3D V14 has implemented accurate and automatic extraction of sparameters with shift of reference planes for coupled and differential ports. This manual mainly serves as a tutorial manual. It demonstrates how the users can achieve the design goals thru many examples. Before we start the actual examples, we will provide a brief introduction in the theory.

For those users we do not want to know the theoretical part of the IE3D, they can skip Section 1 to Section 3 of this chapter. In fact, we also suggest those users who do not have much numerical simulation experience to delay reading the following sections until they get more knowledge from the next a few chapters. Section 1. IE3D is a full-wave EM solver. It solves the Maxwell Equations, which govern the macro electromagnetic phenomenon. There is no much assumption involved except the numerical nature of the method.

Therefore, the solution is extremely accurate. The original Maxwells Equations are in differential form and the solutions of the equations are the electric E field and magnetic H field in the whole space. To solve an EM problem, we need to solve the E and H-fields numerically. Numerical solution of the original Maxwell Equations of E-field and H-field involves many unknowns. We try to represent the E-field and H-field as some weighted integrals of electric current on metallic structures and magnetic current derived from the electric field distribution on a metallic aperture.

For most practical circuit and antenna structures, the metallic domain is limited and the solution domain of the IE3D is very limited. A typical example is a microstrip circuit. The solution domain is just the surface of the printed strip only. Its solution domain is significantly smaller than that of the original Maxwells Equations. Starting from the IE3D For 3D dielectric problems, we are unable to obtain the Greens functions meeting the boundary conditions on the 3D finite dielectrics.

We will need to mesh the 3D dielectrics and solve the equivalent current distribution inside the 3D finite dielectrics. For simplicity reason, our following discussion will focus on the formulation of electric current on metallic structures only.

The magnetic current formulation and the 3D dielectric formulation are similarly obtained and we will not provide detail here. For a general EM scattering problem, we assume a conducting structure in a stratified dielectric environment, as shown in Figure 1. An incident field is imposed to the structure to induce current distribution on it. The induced current will create the secondary field to satisfy the boundary condition on the metallic structure.

For a typical highly conductive structure, the induced current is flowing on the conducting surface and the boundary condition is, Figure 1. The only unknown is the current distribution J r. A complete set of basis functions consists of infinite number of terms. Therefore, equation 6 is an infinite dimensional problem.

Equation 6 is exact when the basis functions in equation 4 are a complete set. Unfortunately, we are unable to solve equation 6 analytically except some very special structure, due to the fact it is an infinite dimensional problem.

We can only get an approximated solution numerically by truncating the infinite series with finite number of terms. Mathematically, the truncation is a projection process. We project the actual solution in infinite dimensions to that of finite dimensions. If we choose the finite dimensions such that the major components of the actual solution are all in the finite dimensions, we should be able to obtain a very good approximation.

After the current distribution is solved, we can calculate the s-parameters, radiation patterns, RLC equivalent circuit of the structure, near field distribution and whatever other parameters of interest. The above method is also called moment method. All moment method or method-of-moment, MOM formulations, no matter simple or complex, take the form of equations 7 to 9.

The differences are on the choice of basis functions and the Greens functions. There are many choices for the basis functions and the dyadic Greens function. Consideration on the basis functions and the dyadic Greens function is mainly on accurate and efficient evaluation of the double surface integrals in 8.

For general-purpose EM simulators, basis functions on a meshed structure are used. The matter is how we mesh the structure. There are two types of meshing schemes in practical applications: 1 Uniform meshing; 2 Non-uniform meshing. Uniform meshing is simple and straightforward. It is required for those simulators using the FFT to calculate the double surface integrals in 8. For uniform grid based simulators, the layout is divided into a uniform grid. Then, a user draws a circuit as some polygons.

Then, the uniform meshing scheme tries to fit the shape of a structure into the uniform grids shown in Figure 1. If your structure cant be fitted completely into a uniform grid, you have two choices. One choice is to remove the portions cant be fitted and ignore them. The other choice is to make the uniform grid finer in order to get a better fit or approximation. For a planar EM simulator, making the grid twice as fine means that you are quadrupling the number of unknowns.

Quadrupling the number of unknowns means that the simulation time is about times slower and the required memory will be about times as much. Certainly, uniform meshing imposes the biggest accuracy and efficiency limitations on EM simulators based upon uniform grids. Uniform grid basis functions are still adopted by some other EM simulators because of the requirement of the FFT algorithm used in calculating the double surface integrals in 8. There might be improvements to reduce the number of unknowns due to making the uniform grid finer to fit a circuit better into the uniform grid.

However, the limitations imposed by uniform grids can never be removed completely. There are ways to use very fine uniform grids to approximate arbitrary shaped structures while the number of unknowns is forced not to increase so fast as regular uniform meshing. However, such enforcement will limit the flexibility of the simulators significantly.

Some simulators may hide the uniformly meshed structures from users. However, you need to keep in mind that there is always approximation involved in such uniform grid based EM simulators. Figure 1.

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## Zeland IE3D Version 12.12 Features RFID Antenna Design Tools

Section 1. Much improvement has been achieved in the IE3D since then. The IE3D has become the most versatile, easy to use, efficient and accurate electromagnetic simulation tool. In the recent years, we have improved IE3D significantly. The AGIF flows simplify the model creation process significantly. By just one click, a user can build a complicated layout consisting of wire bonds, vias, ground and plane planes with thickness and solder balls, pin vias into some 3D models suitable for IE3D full-wave EM simulations. In IE3D

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## Ie3d Manual

Could you please suggest some other weblink to freely download the pdf? What is the function of TR1 in mahual circuit 3. Patch Array antenna is given in ie3d manual and examples,crosscheck it. I have modeled a equivalent circuit. Turn on power triac — proposed circuit analysis 0. Equating complex number interms of the other 6. Hi to All, I wanna design the low pass filter which should be placed after the receiving i3d using ie3d.

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## ie3d_manual.pdf

Dougul ie3d User Manual I have modeled a equivalent circuit. Hello All, Could anyone please explain what are the different matrix solvers available in ie3d. PNP transistor not working 2. PV charger battery circuit 4. Ie3d manual — Coax strucutre in IE3D. For HFSS lot of tutorials are available in this site. Losses in inductor of a boost converter 9.