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Hfss Tutorial Transmission Line

Hfss Tutorial Transmission Line

Tzong-Lin Wu Department of Electrical Engineering National Taiwan University Prof. The band-notched antenna is composed of a planar wideband dipole antenna, a section of CPS feeder line and a λg/4 (λg is the guided wavelength at the resonant frequency) CPS short-circuited resonator. The demand for a smaller 90-degree hybrid coupler with a broader bandwidth is. 0 – ––– Training Seminar Training Seminar 15 Overview 3D Modeler –Primitives 2D Draw Objects The following 2D Draw objects are available: Rectangle, Circle, Line, Point, Spline, Ellipse, Regular Polygon (v8. Transmission Lines from Amanogawa. beTheSignal. Transmission Line Design. Aperture Coupled Microstrip Antenna Design and Analysis Michael Paul Civerolo A linearly-polarized aperture coupled patch antenna design is characterized and optimized using HFSS antenna simulation software [1]. Driven Terminal: S-matrix solutions of multi-conductor transmission line ports will be expressed in terms of terminal voltages and currents. Mac GTK+ Qt Web Client Terminal GTK+ Qt Web Client Terminal. Structure Construction Generally, structures are built from the ground up. In this tutorial, we present a basic. In this modern era of wireless communication, many engineers are showing interest to do specialization in communication fields, but this requires basic knowledge of fundamental communication concepts such as types of antennas, electromagnetic radiation and various phenomena related to propagation, etc. hfss differential port. Preparation Before coming to the laboratory to perform this assignment, the students should prepare the following: Identify a workstation in our school (or remote log-in portal) with an installation and/or license for running ANSYS HFSS. The methods of feeding the RF power directly to the patch antenna is to make it radiate by using a microstrip line feed and a coaxial probe feed. The major part of the capital cost is only due to conductors in transmission lines. To Set the Solution Type Select HFSS > Solution Type Design Examples (Eigen mode: DR) cont. Specifically, the 90 degree hybrid coupler is utilized in the handset infrastructure because it offers low-loss, high isolation, and exceptional phase and amplitude balance. Substrate-Integrated Waveguide Transitions To Planar Transmission-Line Technologies Farzaneh Taringou1, David Dousset2, Jens Bornemann 1 and Ke Wu2 1Department of Electrical and Computer Engineering, University of Victoria, Victoria, BC, Canada V8W 3P6. It is recommended that you have completed the Basic Tutorials prior to attempting these tutorials. Bhartia: From description:"Topics covered include transmission lines and lumped elements, resonators, impedance matching networks, hybrids and couplers, filters, active and passive solid state devices, oscillators, amplifiers, detectors and mixers, microwave control circuits, frequency multipliers and dividers, computer-aided design. The effect of negative refraction is analogous to wave propagation in a left-handed transmission line, and such structures have been used to verify some of the effects described here. 0 Software (high frequency structural simulator), which is a commercial tool is used for design and simulation [11, 6]. Transmission Line Equations. A new project is automatically created when HFSS is launched. When air is used as the dielectric substrate, the length of the rectangular microstrip antenna is approximately one-half of a free-space wavelength. The importance of PCB interconnect techniques increases with frequency of operation. Cryogenic transfer line thermal coatings (ex. View Notes - HFSS tutorial4. We will show how we use Ansoft HFSS to accomplish this. Application of EM- Simulators for Extraction of Line Parameters 2. In that case, it contains a reference to the U model. pdf browning buckmark 22 parts diagram. If we apply a signal V(t) to one end of the transmission line, where t is time, the signal at the other end will be V(t − τ), where τ is a constant. Basics of Measuring the Dielectric Properties of Materials Application Note. Visualization using HFSS package (recorded lab tutorial). com), then a full wave FEM analysis is needed in HFSS for best results. Transmission-line synthesis. 50 ohm transmission lines. Adams March 12, 2008 This tutorial introduces the interface of Ansoft’s HFSS, and walks the student through an example problem of creating, simulating and evaluating the response of a standard stripline structure. Hybrid S-Parameters for Transmission Line 1 Networks with Linear/Nonlinear Load Terminations Subject to Arbitrary Excitations Yakup Bayram, Student Member, IEEE, John L. However, on closer inspection, each transmission line has common components with unique characteristics, beginnings and ends. Application of EM- Simulators for Extraction of Line Parameters 2. - matlab code for. ECE ILLINOIS ECE 451: Ansys HFSS Tutorial Simulate and Analyze an Example of Microstrip Line Drew Handler , Jerry Yang October 20, 2014. A controlled impedance transmission line is a pair of conductors that have a uniform cross section and uniform distribution of dielectric materials down their length. In this tutorial, we present a basic. Ansys High Frequency Structure Simulator (HFSS) Tutorial August 16, multi-conductor transmission lines (no (treated as t-line cross-section). Transmission line scaling ,signal integrity. 431 - Introduction to ANSYS HFSS for High Frequency Electromagnetics. VSWR is a function of the characteristic impedance of the transmission line and the impedance of the antenna. For a finite length lof the transmission line, the quantity l/λ=nl/λ 0 is referred to as the electrical length of the line and plays the same role as the optical length in thin-film layers. The feeding direct techniques were illustrated by Mandal [6]. 0 – ––– Training Seminar Training Seminar 15 Overview 3D Modeler –Primitives 2D Draw Objects The following 2D Draw objects are available: Rectangle, Circle, Line, Point, Spline, Ellipse, Regular Polygon (v8. V antenna and television set or the wire used between transmitter antenna and transmitter are known as transmission lines. With this class With this class of simulation tool, the entire 3-D structure is constructed, including the physical dimensions of the structure and all material properties. 2/20/2009 3 Transmission Lines and Waveguides. These can add a design parameter or degree of freedome that allows the performance to be tuned. pdf browning buckmark 22 parts diagram. hfss differential port. Bhartia: From description:"Topics covered include transmission lines and lumped elements, resonators, impedance matching networks, hybrids and couplers, filters, active and passive solid state devices, oscillators, amplifiers, detectors and mixers, microwave control circuits, frequency multipliers and dividers, computer-aided design. Now do the whole thing again for the second line. And for base station antenna it is kept to <-15dB. For example the wire used between T. Lecture 5: Dynamic Link ANSYS HFSS for Antenna Design. Box 25240 Tempe, AZ 85285-5240 Email: christrask@earthlink. good source of transmission line, Ultracad. Transmission line • Two or more conductors separated by some insulating medium (two-wire, coaxial, microstrip, etc. The transmission response using 2 Floquet modes per port at normal incidence converged after 3 adaptive passes. 6) are general results that are valid for any TEM line. ) No shielding Figure 3: S-parameter results from HFSS The crosstalk induced into the closer power line Vdd2. The acronym stands for high-frequency structure simulator. Ansoft HFSS Tutorial: Stripline Dr. I'm currently designing a Inverted-F antenna and having a little difficulty trying to connect a line to the ground. Research Project. com Calculating Z0 with the Polar Instruments SI9000 2D Field Solver • Select the parameterized cross section • Input parameter values • Calculate the Z0. Simulating a transmission line is hard! The Spice model used will be a very long array of RLC lumped elements to simulated the basic model of a transmission line. It is recommended that you have completed the Basic Tutorials prior to attempting these tutorials. It is one of several commercial tools used for antenna design, and the design of complex RF electronic circuit elements including filters, transmission lines, and packaging. - best solution type for filter design in HFSS - cst studio suite microwave studio - matlab code for rectangular microstrip patch antenna and hfss software request. Filter Design Using Ansoft HFSS. Tutorial on Electromagnetic design and Modeling with HFSS F. port_tutorial_lump_v_wave - Download as Powerpoint Presentation (. To prove that a system/component is compliant with the frequency bands, transmission behavior and the RF- transmissions methods expected, RF-measurements need to be performed. The wave and circuit approaches are both useful, as you will see in carrying out this experiment. An air filled Rectangular waveguide WR-90 is simulated using HFSS simulation software to obtain different parameters. The filter circuit has been carried out using Computer Aid Design (CAD), Ansoft HFSS software and designed with four parallel couple line model and small dimension (10 × 10 mm2) using LaAlO3 substrate. 2 Propagation Modes When a time-varying signal such as sinusoid connected to (or launched on) a transmission line, a propagation mode is estab-lished Recall that both electric and magnetic fields will be present (why?) Two mode types as: (1) transvere electromagnetic (TEM) and (2) non-TEM or higher-order TEM Transmission. 2 The Hamilton’s principle can yield the governing differential equations as well as boundary conditions. Topics: Ansoft HFSS — 3D Boundary Manager Sources Defining Terminals Port Wave Ports For projects containing multi-conductor transmission line ports, a terminal-based descrip- tion in terms of voltages and currents may be more useful than the traditional mode-based Defining Terminals S-matrix. EECS 117A Demonstration 4 HFSS Simulation of a Transmission Line Getting started : • Microsoft Start > Programs > Ansoft > HFSS9 • After program initialization, click on the blue icon for ( Insert HFSS Design) • Select the menu item HFSS>Solution Type, choose Driven Terminal click OK. The acronym stands for High Frequency Structure Simulator. From this condition, you can find the length of the stub depending on whether you use a short or open stub. HFSS ANSYS HFSS is a 3D electromagnetic (EM) simulation software for designing and simulating high-frequency electronic products such as antennas, antenna arrays, RF or microwave components, high-speed interconnects, filters, connectors, IC packages and printed circuit boards. HFSS is a commercial finite element method solver for electromagnetic structures from Ansys. 5D Method of Moments, Eigenmode, and Linear circuit simulation. pdf philips anubis-s service manual. The acronym stands for high-frequency structure simulator. The higher the SWR and the longer the line, the greater the loss. well as to check the rather simplistic procedure leading to the radial stub radius. Noteworthy is the fact that the gamma results, and characteristic wave impedance Zo, that HFSS produces for a given simulation are actually determined by the port solution, and apply in a strict sense only to the transmission line that is the wave port. I devised a couple of lame metrics for meeting the goals of a coupled. The equations for synthesizing microstrip are far from closed form. A simple Microstrip Transmission line is design here. T RANSMISSION L INE T HEORY P AGE 2 R. The term "hybrid" comes from the tele-phone wireline tradition, and refers to the. [7] Ansoft High Frequency Structure Simulator v11 User’s Guide. Example HFSS Scripts¶ Below are a variety of scripts that you can reference to do different things in HFSS. In order to close the current path, I have assigned PEC boundary condition to the outermost surfaces of my model. Microwave Solid State Circuit Design by I. hfss transmission line - Wilkinson power divider design. 6 etap tutorial Description ETAP offers a suite of fully integrated electrical engineering software solutions including arc flash, load flow, short circuit, transient stability, relay coordination, cable ampacity, optimal power flow, and more. In fact, circuit simulation with an EM. A Tutorial on Transmission Line Transformers by Chris Trask / N7ZWY Sonoran Radio Research P. Analytical expressions for the four-port impedance matrix of the CGP-EBG MTM-DTL are derived using coupled-line theory and a segmentation method. The length (L) and width (W) are calculated as 28. of transmission line feeds as excitations whereby a 2D solver computes the proper modes for the given transmission line cross-section and then applies these fields to the 3D model using the transfinite element procedure [6]. So how's your flare look? Well, it's too late now -- might as well try it out. On hfss Design/Project Properties there is some 5/6 item thats i couldn't understand to using it (Value, Optimization, Tuning,etc). A simple Microstrip Transmission line is design here. ppt), PDF File (. The standard closed form solutions of Wheeler (3) and Schneider (4). Shorting pins used in patch antennas are discussed. nano-structured, micro-structured, vapor deposition) for 0. For unbalanced. Visualization using HFSS package (recorded lab tutorial). Consider the distribution of the electric and magnetic fields inside the coaxial cable when the line is terminated with a perfectly radiating surface. Charts and several programs are available which make use of the smith chart (see software below). connecting element such as a microstrip line or probe feed. comments powered by Disqus. For most single-moded transmission lines. Advanced Design System (ADS) Tutorial: ADS is a simulator like spice, cadence. The "Wire" is in the "Draw" menu. ) But it is very difficult to simulate such stuff as skin effect of transmission lines. 1 Double-click the HFSS 9 icon on your desktop to launch HFSS. Kock in the late 1940's Metal-lens antennas, IRE. An extreme case, in which the far end is short-circuited, is shown in Figure Zo-2(a). The intra-coaxial transmission line coupler TXC is a four port device designed to harvest power from a host coaxial transmission line and to provide telemetry for remote sensing applications via the same host transmission line. Questions or comments can be sent to Kent L. Driven Terminal: S-matrix solutions of multi-conductor transmission line ports will be expressed in terms of terminal voltages and currents. This disturbance will change the characteristics of a transmission line such as line capacitance and inductance. Does anyone have an idea about the wave port or lumped port in hfss ,which should be used especially for microstrip patch antenna in uwb range i. pdf browning buckmark 22 parts diagram. There are a few different types of excitations to choose from, but the most common excitation we use in this lab is the Wave Port. University of Mississippi, University, MS 38677-1848, USA. A simple Microstrip Transmission line is design here. Outline of Tutorial (con't) 5. Having already investigated the transmission line curves and reaching a logical conclusion that does not agree with the text books, it seemed like a good idea to investigate antenna current distribution in a similar manner. pdf Further info on LBC's and PML's w CalcCookBook. Bhartia: From description:"Topics covered include transmission lines and lumped elements, resonators, impedance matching networks, hybrids and couplers, filters, active and passive solid state devices, oscillators, amplifiers, detectors and mixers, microwave control circuits, frequency multipliers and dividers, computer-aided design. It is described in the book and in much of the literature in a highly mathematical way. - 15EC63R20 Specialization- RF & Microwave Engineering HFSS is a high-performance full-wave electromagnetic(EM) field simulator. ANSYS Examples These pages have been prepared to assist in the use of ANSYS for the formulation and solution of various types of finite element problems. HFSS is a commercial finite element method solver for electromagnetic structures from Ansys. Scribd is the world's largest social reading and publishing site. For simplicity, we assume that transmission line characteristic impedance Z 0 V out V src. One line is the positive current line and the other is the negative current line. • The HFSS core license enables linear circuit simulation Transmission Line Calculator Filter Synthesis. Differential configuration example In Figure 3, the Vicm of the op amp is 9 V. pdf sanyo 42 dp42841 owners manual. Worst case return loss is 16 dB at the. HFSS Tutorial 4: 20-dB Microstrip Coupled Line Goal: design a 20-dB microstrip coupled line operating at 2. Their part properties vary. Each segment consists of an ideal lossless delay line and resistance, where the segment delay equals the total line delay divided by N and the segment resistance equals the total line resistance divided by N. HFSS uses an arbitrary port solver to calculate the natural field patterns or modes that can exist inside a transmission structure with the same cross section as the port. Thanks, Stan :D. Advanced Design System (ADS) Tutorial: ADS is a simulator like spice, cadence. DDR3 simulation performed with the ANSYS SI option, showing DQ, DQS and timing eye patterns. For transmission line structures that are enclosed by metal, this is not a problem. In this modern era of wireless communication, many engineers are showing interest to do specialization in communication fields, but this requires basic knowledge of fundamental communication concepts such as types of antennas, electromagnetic radiation and various phenomena related to propagation, etc. But there is a progres-sion on the explanations, and due to the fact that we have to cover a huge amount of information, some key point will be shown ony once, so it is recommanded to read the chapters in order. , Newbury Park, California, USA Weimin. • To obtain the Field patterns, intrinsic Impedance and wavelength for the first 4 modes. Reducing signal transmission loss by low surface roughness Taka-aki Okubo1),Toshio sudo1), Toshihiro Hosoi2), Hiroaki Tsuyoshi2), and Fujio Kuwako2) 1)Shibaura-institute of Technology. 4 GHz and broad bandwidth of 2. In order to simulate the design, we must create/assign at least one port excitation. The situation is different for a transmission line of finitelength that is not terminated in its characteristic impedance. internal ridges that serve primarily to increase transmission bandwidth by lowering the cut-off frequency. of EECS 0 12 21 0 csc Z ZZ jZ j β β ==− ≈A A Thus, an electrically short (βA 1) transmission line can be approximately modeled with a “T-circuit” as: Now, consider also the case where the characteristic impedance of the transmission line is. But it focuses on the RF and microwave design, so most of its devices on the library are microwave devices. In particular, the dimensions of the patch are given along with the feed network. LAB # 1 Introduction to HFSS multiconductor transmission line ports. For transmission line structures that are enclosed by metal, this is not a problem. Transmission line • Two or more conductors separated by some insulating medium (two-wire, coaxial, microstrip, etc. Hands-on exercises will solidify the learning experience. If we apply a signal V(t) to one end of the transmission line, where t is time, the signal at the other end will be V(t − τ), where τ is a constant. HFSS: First Simulation If you are targeting very high performance system, simulation of transmission line is suggested Transmission line can be designed by TxLine (www. 5D and 3D, are powerful tools for the analysis of the planar transmission lines structure. Examples are shown plotting reflection coefficients, impedances and admittances. The microstrip feed line can be replaced with other planar lines, such as stripline, coplanar waveguide, dielectric waveguide, and similar. Microstrip Transmission Line Characteristic Impedance Calculator. Assume the impedance of the line is 50 ohm, phase constant is 20 (rad/m) and the operating frequency is 700MHz. pdf 2007 honda ruckus service manual. If it is of interest to include the change in the transmission line impedance, the port should be kept in a rectangular. Low cost; Low. The page includes both advantages and disadvantages of ac and dc electrical transmission system. Tutorial on transmission line. The acronym stands for high-frequency structure simulator. 0 5 10 15 20 25 30 35 40-50-40-30-20-10-60 0 freq, GHz S (1, 1), d B. Do you have PowerPoint slides to share? If so, share your PPT presentation slides online with PowerShow. Driven Terminal: S-matrix solutions of multi-conductor transmission line ports will be expressed in terms of terminal voltages and currents. hfss stripline example. ! Assuming E(x,t) = 2cos(3x10^15t - 10^7x) V/m, calculate the wave velocity. consider transmission-line effectsany further. This paper is organized as follows. Development and applications The first metamaterials were developed by W. Next, we show the example of the two widely used simulation tools to design the feedthrough: one is the frequency domain method to optimize the S-Parameters, and the other is time domain. transmission line conductors sizes basics and tutorials Since it is impractical to manufacture an infinite number of wire sizes, standards have been adopted for an orderly and simple arrangement of such sizes for manufacturers and users. Once you've bent, flared, and installed both lines, lower the truck, start it up, and check the transmission fluid level. Overhead Transmission Line Conductor Introduction. Simulating a transmission line is hard! The Spice model used will be a very long array of RLC lumped elements to simulated the basic model of a transmission line. Assume the impedance of the line is 50 ohm, phase constant is 20 (rad/m) and the operating frequency is 700MHz. Ideal Transmission Line Model The initial design was created from ideal transmission lines in Ansoft Designer using the Filter Design Wizard (FDW). It is recommended that you have completed the Basic Tutorials prior to attempting these tutorials. He has held this position since January of 2009 and works in Pittsburgh, PA USA. An air filled Rectangular waveguide WR-90 is simulated using HFSS simulation software to obtain different parameters. In high speed data communication chip design, the. View Lab Report - Lab HFSS Stripline from ECE 4370 at Georgia Institute Of Technology. Return loss or S11: Is used to show how antenna is matched to a transmission line (feeding line) and it is usually taken to be <-10 dB at this value it is believed that above 90 % are transferred to antenna. If not available, consider the standard values. pdf from ELECTRICAL 212121 at Central Academy (alt). 11 b), and cos^3 (Fig. The transmission line de-embedding technique in [4] was applied to the simulated S-parameters to extractZC and γ, and (2) was applied to split the short transmission line test structure. Accurate EM Simulation of SMT Components in RF Designs Weimin Sun Skyworks Solutions, Inc. Skip navigation Ansoft HFSS z Antenna tutorial - Duration:. In contrast to FEM, the integral equation (IE) procedure, available in HFSS-IE, computes the equivalent currents that. 11 c) designs are shown in Fig. electromagnetic structure (a stripline transmission line on a circuit board) in the ANSYS HFSS modeling tool. Upon completion of this chapter, you will be able to: State what a transmission line is and how transmission lines are used. employs a strip line to feed the patch antenna f rom and stacked antenna have been examined using coaxial probe feed and transmission line feed. Problem Definition: The Probe Feed Patch Antenna - Basic Characteristics of Microstrip/Patch Antennas - Design Equations based on the Transmission Line Model n g i s e D e l p m a -S 7. When the load impedance matches the characteristic impedance of the transmission line, the reflection coefficient $$\Gamma =0$$, and there is no reflected wave. 6 etap tutorial Description ETAP offers a suite of fully integrated electrical engineering software solutions including arc flash, load flow, short circuit, transient stability, relay coordination, cable ampacity, optimal power flow, and more. One method of doing this is by using an inset feed. High Frequency Structure Simulator for 3D Electromagenetics HFSS is a platform that includes multiple simulation technologies for component or system design. In HFSS, create the above-described coaxial line which is of the length 10 mm. This is a one day course, intended for people who have had little or no experience with ANSYS HFSS. A new project is listed in the project tree in the Project Manager window and is named Project n by default. View Notes - HFSS tutorial4. 0 5 10 15 20 25 30 35 40-50-40-30-20-10-60 0 freq, GHz S (1, 1), d B. Watson Research Center deutsch@us. pdf Further info on LBC's and PML's w CalcCookBook. Lecture 20 Transmission Lines: The Basics In this lecture you will learn: • Transmission lines • Different types of transmission line structures • Transmission line equations • Power flow in transmission lines • Appendix ECE 303 - Fall 2006 - Farhan Rana - Cornell University Guided Waves. The methods of feeding the RF power directly to the patch antenna is to make it radiate by using a microstrip line feed and a coaxial probe feed. TUTORIAL Microstrip and Stripline Design. In baseband chip design, the wires are often - treated as lumped parasitic loads. We therefore need to review a few concepts from transmission line theory. VSWR: The VSWR or voltage standing wave ratio applies specifically to the voltage standing waves that are set up on a feeder or transmission line. Their part properties vary. Before the full three-dimensional electromagnetic field inside a structure can be calculated, it is necessary to determine the excitation field pattern at each port. TRANSMISSION LINES 2. transmission line. implementation of a new x band 1 4 power, hfss tutorial waveguide t junction, hfss 15 manual pdfsdocuments2 com, design of an e h tuner and an adjustable directional, electromagnetic design solutions cst, hfss 15 manual pdfsdocuments2 com, hfss 13 rectangular waveguide wrong sparameters, double ridge magic tee coupler using ag and. Visualization using HFSS package (recorded lab tutorial). 00 ©2014 IEEE-6 410 Harbin, CHINA. A new project is listed in the project tree in the Project Manager window and is named Project n by default. He has held this position since January of 2009 and works in Pittsburgh, PA USA. Click 'Draw Rectangle' in the toolbar to enter the drawing mode (note the other 2-D shapes available in the toolbar). HFSS provides automatic, accurate, and efficient solutions to overcome these challenges, making it the ultimate tool of choice for antenna simulation. employs a strip line to feed the patch antenna f rom and stacked antenna have been examined using coaxial probe feed and transmission line feed. Reducing signal transmission loss by low surface roughness Taka-aki Okubo1),Toshio sudo1), Toshihiro Hosoi2), Hiroaki Tsuyoshi2), and Fujio Kuwako2) 1)Shibaura-institute of Technology. Advantages and disadvantages of stripline. ANSYS Examples These pages have been prepared to assist in the use of ANSYS for the formulation and solution of various types of finite element problems. In this tutorial, we present a basic. For transmission line structures that are enclosed by metal, this is not a problem. A single bul-let indicates that the procedure has only one step. An Introduction to Electric Power Transmission - Table of Content (TOC) Glossary About Transmission Lines Electricity Generation and Delivery Transmission Line Ownership and Funding Anatomy of a Transmission Line Building/Maintaining Transmission Lines Planning the System Permitting Potential Environmental Impacts. Microwave Engineering. T RANSMISSION L INE T HEORY P AGE 2 R. When you set the Stub mode parameter in the mask dialog box to Shunt, the two-port network consists of a transmission line in series with a stub. Designing a Mircrostrip transmission line on HFSS ANSYS. Bhartia: From description:"Topics covered include transmission lines and lumped elements, resonators, impedance matching networks, hybrids and couplers, filters, active and passive solid state devices, oscillators, amplifiers, detectors and mixers, microwave control circuits, frequency multipliers and dividers, computer-aided design. 1 Double-click the HFSS 9 icon on your desktop to launch HFSS. seminar on hfss, hfss coupled line filter, voltage integration path zpv, is hfss work for dtft, Title: High Frequency Structure Simulator HFSS Tutorial Page Link: High Frequency Structure Simulator HFSS Tutorial - Posted By: seminar flower Created at: Friday 19th of October 2012 01:45:16 PM Last Edited Or Replied at :Friday 19th of October 2012. If you have any inquiry, please email to vnemsolutionsvnemsolutions@gmail. Now switch to an empty Qucs schematic and press Ctrl+V. Keywords: CPW, FR-4, gain, Ansoft HFSS, Microstrip antenna Antenna designing is CPW-fed technique. We therefore need to review a few concepts from transmission line theory. But there is a progres-sion on the explanations, and due to the fact that we have to cover a huge amount of information, some key point will be shown ony once, so it is recommanded to read the chapters in order. For a finite length lof the transmission line, the quantity l/λ=nl/λ 0 is referred to as the electrical length of the line and plays the same role as the optical length in thin-film layers. It focuses on a tutorial overview of the defected ground structure (DGS). PSpice A/D uses a distributed model to represent the properties of a lossy transmission line. You can copy the script to a file and either run it from the (command line) or run the script in HFSS by clicking Tools → HFSS in the GUI. ! Assuming E(x,t) = 2cos(3x10^15t - 10^7x) V/m, calculate the wave velocity. It is shown in figure 2. Removing the transmission line will in turn remove all the many elements and so it will speed up. can any body help me?? The hfss manual even has an example of microstrip transmission lines. Coupling is –19 dB ±1. Outline of Tutorial (con't) 5. ANSYS HFSS is a 3D electromagnetic (EM) simulation software for designing and simulating high-frequency electronic products such as antennas, antenna arrays, RF or microwave components, high-speed interconnects, filters, connectors, IC packages and printed circuit boards. Consider the distribution of the electric and magnetic fields inside the coaxial cable when the line is terminated with a perfectly radiating surface. Click 'Draw Rectangle' in the toolbar to enter the drawing mode (note the other 2-D shapes available in the toolbar). However, it may not be clear when transmission line techniques are appropriate. Sonnet will model metal to the thickness required by any particular process, ensuring correct dielectric and metal to metal spacing, as well as accounting for additional transmission line capacitance between closely spaced lines. Simulating a transmission line is hard! The Spice model used will be a very long array of RLC lumped elements to simulated the basic model of a transmission line. For the sake of an easier connection between the metallic patch and the feed network transmission line, a coplanar waveguide (CPW) transition was introduced at each output port of the feed network. S11 is known as the return loss, or how much power is reflected from the transmitter to an antenna. The results of S11 for the planar design, cylindrical design (Fig. MIMP Motorola Impedance Matching Program (select zip file and download) NEC Tutorial - Learn how to create NEC input files. Filters can be selected with "Impedance-Frequency" or "IL-Frequency" charts. To better appreciate printed transmission lines, and microstrip in particular, some of the basic principles of microstrip lines will be reviewed here. Coaxial Line was very suitable, since it possessed a dominant mode with zero cut-off frequency, providing two important characteristics: very wide bandwidth, and the capability of miniaturization. INTRODUCTION. The voltage standing wave ratio (VSWR) is defined. Q: What is a TEM wave?. Application of EM- Simulators for Extraction of Line Parameters 2. PRINCIPLES OF TRANSMISSION LINES. It presents at its input the dual of the impedance with which it is terminated. Getting Started with HFSS: A Probe Patch Feed Antenna iii Conventions Used in this Guide Please take a moment to review how instructions and other useful information are presented in this guide. This tutorial describes standing wave ratio (SWR) or voltage standing wave ratio (VSWR), a way to measure transmission line imperfections and efficiency. But it focuses on the RF and microwave design, so most of its devices on the library are microwave devices. Small loop antenna. The feeding direct techniques were illustrated by Mandal [6]. 6) are general results that are valid for any TEM line. However, it may not be clear when transmission line techniques are appropriate. Crews then bolt the sections together. There are some advantages to using a microstrip transmission line over other alternatives. The voltage standing wave ratio (VSWR) is defined. lumped port in cst. The microstrip is a very simple yet useful way to create a transmission line with a PCB. HFSS is a commercial finite element method solver for electromagnetic structures from Ansys. Watson Research Center deutsch@us. Patch Antenna with an Inset Feed. (Meep is a good alternative but it will take some years until it is ready an it is not so good for transmission lines. Radiation pattern of line source fed with uniform current. If unity-PF (resistive) loads are added at the end of a line, the voltage at the end of the transmission line decreases slightly - small positive VR. June QST: Let's Talk Transmission Lines - Page 3. Otman El Mrabet IETR, UMR CNRS 6164, INSA, 20 avenue Butte des Coësmes 35043 Rennes, FRANCE 2005 - 2006 TABLE OF CONTENTS INTRODUCTION. Shorting pins used in patch antennas are discussed. 4/23/2007 Stepped Impedance Low Pass Filters 3/14 Jim Stiles The Univ. In order to simulate the design, we must create/assign at least one port excitation. INTRODUCTION. 0 2 4 6 8 10 12 14 16 18. good source of transmission line, Ultracad. HFSS Transient is the Time Domain version of HFSS based on the Finite Element Time Domain Method. hfss tutorial. edu Alina Deutsch IBM Corporation, T. PSpice A/D uses a distributed model to represent the properties of a lossy transmission line. 60 GHz Tapered Transmission Line Resonators. The methodologies for computer calculation of transmission line parameters are studied and formulated into a MATLAB based tool. Appendix 6-3: HFSS 3D Excitations Introduction to ANSYS HFSS. On hfss Design/Project Properties there is some 5/6 item thats i couldn't understand to using it (Value, Optimization, Tuning,etc). HFSS Tutorial 4: 20-dB Microstrip Coupled Line Goal: design a 20-dB microstrip coupled line operating at 2. • Bold type is used for the following:. Hi All, I am a new user on this forum and hfss too. o Part (2): Add some circuit elements to the HFSS model inside Designer & perform LNA o o Part (3): Push Excitation Back to HFSS & look at the field etc. dimensions and relative permittivity of the line. With so many elements to simulate it will take a long time.