After the simulation i tried to plot the phase of reflection coefficient vs. Before building antennas, people can use these softwares to help them for finding the results they want. Reflection coefficient and transmission lines using the. Without loss of generality, we may replace the extended circuit of fig. How can we get reflection phase characteristics of his high impedance surface using hfss software. Vice versa is true when reflection occurs at lower refractive index interface. Reflection phase characteristics of ebg structures and wlan band notched circular monopole antenna design. As an example of the phase simulations provided by hfss, the phase response of a squarepatch reflectarray with a unit. Caspers cern, geneva, switzerland abstract the concept of describing rf circuits in terms of waves is discussed and the smatrix and related matrices are defined. Hfss from ansoft and cst microwave studio are very popular computer softwares that are used for antenna models design. Calculates transmitted and reflected power from incident. I simulated a single cell structure microstrip architecture and i used the masterslave boundary conditions in order to produce a periodic structure.
For, there is a phase reversion for the reflected wave. The reflection gives a 180 o phase change, for destructive interference we need a 180 o phase change which we can get by adding a further 360 o. Phase shifter fundamentals phase shifters are a critical component in many rf and microwave systems. The effect of phase change on reflection on optical measurements kate m. Phase characteristics of subwavelength antenna elements for efficient design of terahertz frequency and millimeter wave. How do you draw a reflection phase vs frequency plot for high. The effect of phase change on reflection on optical. Open hfss and save the default project by a new name. A single bullet indicates that the procedure has only one step.
How do you draw a reflection phase vs frequency plot for. Furthermore reflection phase and dispersion diagram both estimate same band gap in. Notes on perfectly matched layers pmls mit mathematics. Jan 15, 2019 one the most important applications of metasurfaces is to control a wavefront of electromagnetic waves by imparting local, gradient phase shifts to the incoming waves, which leads to a. With our online resources, you can find hfss tutorial or just about any type of ebooks, for any type of product. Hfss how to plot the phase of reflection coefficient for normal incidence, you can use pecpmc as boundary conditions, instead of masterslave. The effect of metasurface element dimensions on the reflection phase is also discussed.
Substrate integrated waveguide siw, also called postwall waveguide or laminated waveguide, is a promising candidate for millimeterwave and terahertz applications. That is the path needs to be one wavelength longer. A method for determining optimal ebg reflection phase. A waveguide tjunction 22 set up the design open hfss and save a new project a project is a collection of one or more designs that is saved in a single. In this case, you set the design, and you can get the phase of s11 very easy. For the signals to cancel, the phase shift of the reflected path needs to be a complete wavelength.
In simple terms reflection is a form of conscious response some say a processing phase to a situation or event, and the experiences within that situation or event. Davies2 1department of mechanical engineering 2department of physics and optical science unc charlotte, charlotte, nc abstract phase change on reflection affects many precision dimensional measurements. To obtain the field patterns, intrinsic impedance and wavelength for the first 4 modes. Ansoft corporation hfss field calculator cookbook ansoft hfss field calculator cookbook a brief primer and collection of stepbystep calculator recipes for use in hfss fields postprocessing notice. Most of the studies reporting on the branch line hybrid coupled. I wonder if the later can be used in cst 2007 or not. Either way, simulation data results in an s matrix in the data set for the specified range and points. Hfssie design of reflector with excitation linking to hfss design in part 1. The sievenpiper mushroom structure has also been widely used to realize lefthanded metamaterials negative refractive index since it can be designed to support a dominant quasitem backward wave i. A signal at a frequency of 10 ghz enters the waveguide at port 1 see. Measurements can be made at each port to characterize the network, which can. Applications include controlling the relative phase of each element in a phase array antenna in a radar or steerable communications link and in cancelation loops used in high linearity amplifiers.
Differential circuit topology is commonlyused as an implementation method, with the goal of enhancing the data carrying capable of the physical layer. Pseudobrewster angle is typically at the 4 db point from perfect ground signal reflection at an outof phase point cancellation signal reflection at an in phase point augmentation. In order to design an ebg structure that has an inphase reection property, on a single pcb, a 1d con. What is the right procedure to calculate the reflection phase and the dispersion diagram of a periodic structure in both cst and hfss. What is the right procedure to calculate the reflection. Ive already investigated the farfield behavior by simulating a unitcell, utilizing masterslave boundaries to force the unitcell behavior to be replicated and forcing a plane wave to impinge upon the infinite sheet of metamaterial by utilizing perfect e and perfect h boundaries on my ports. Hfss how to plot the phase of reflection coefficient. Discrete sweep simulation was run in a number of frequency points within one range. The pdf documents can also be downloaded from our website. The complex reflection coefficient cankaya universitesi.
Using hfss, simulate an airfilled wr90 waveguide shown above. One the most important applications of metasurfaces is to control a wavefront of electromagnetic waves by imparting local, gradient phase shifts to the incoming waves, which leads to a. Input impedance is defined as the impedance presented by the antenna at its terminals or. It is the attention to design detail, execution of the design, and quality of the fabrication. The signal flow graph sfg is introduced as a graphical means to visualize how waves propagate in an rf network. Techniques for analyzing antenna lattice structures.
The derivation uses the following two propositions which are proven in appendix i. How do you draw a reflection phase vs frequency plot for high impedance ground plane in hfss. Pdf files the phase2 tutorial, reference and verification documents are all available as pdf portable document format files. Mungan, spring 2008 it is straightforward to derive the rule for phase changes upon reflection of a plane electromagnetic wave at normal incidence to the interface between two dielectric media. Anyway i ve tried the first and they get errors when running the macro. You will be glad to know that right now hfss tutorial pdf is available on our online library. The gain of these antennas is between the ranges between 8dbi to 20dbi. University of california, san diego in electrical engineering. Analysis must include first three modes te10, te20, te01 3.
The information contained in this document is subject to change without notice. Design of a triangular patch microstrip antenna on a. Hfss tutorial pdf hfss tutorial pdf are you looking for ebook hfss tutorial pdf. Tutorial overview and definition of terms power dividers and couplers are straightforward passive components. Hfss tutorial courserepsecen452spring2016 wiki github. How to get reflection phase versus parameters such as line length or radius length. With diffractive beam splitter can use a phaseshifting interferometer. In wilkinson power dividers, the output signals are 3 db below the input signal, and they are also in phase i. Parameters of free space are identical with vacuum. And both have considered an air box over ebg unit cell. This scattering is caused by the interaction of light with small particles, even atoms or molecules, within the material.
The base hfss offering includes 3d and layout interfaces, 2. Plotting the phase of e tangential to a linecurve 18 plotting the maximum magnitude of e tangential to a line 19 calculating quantities for 3d surface or vector plot outputs. In our case this involves, but is not limited to, a learning and teaching situationevent, and can include all manner of formal and informal occasions that are often quite complex for. Reflection and refraction at an interface, total internal. Compute the reflection and transmission coefficients of a frequency selection surface. Pdf reflection phase characteristics of ebg structures and. Rectangular waveguide hfss r objective getting started with hfss a tutorial using hfss, simulate an airfilled wr90 waveguide shown above. A numerical model of a plane wave propagating in free space should be created. Pdf reflection phase characteristics of ebg structures. This means that the resonator is not connected to any load.
Ansys hfss tutorial simulate and analyze an example of microstrip line drew handler, jerry yang october 20, 2014. In this tutorial, the dispersion diagram of a lefthanded sievenpiper mushroom structure is. Find the reflection coefficient at the load, the reflection coefficient at the input to the line, the input impedance, the standing wave ratio on the line, and the return loss. Our starting point is a simple two port network shown in figure 1. I have a question about assigning boundary condition of ebg in hfss. Reflection and refraction at an interface, total internal reflection, brewsters angle z refracted. How to get reflection phase versus parameters for reflect. In this example, the phase relation1 in hfss between the.
The extra 3 db of path loss in the resistive divider is caused by the extra voltage drops across the 16. Antenna solution using an integral equation and physical optics solution methods, both techniques are available within hfssie. After you install phase2, you will find them in the manuals folder in your phase2 installation folder. How can we get reflection phase characteristics of his high. First in complex form, second just its magnitude which is. The device under test dut is a black box network, it can have resistors, capacitors, inductors, transistors, transmission lines, etc. Reflection type phase shifter design a reflection type phase shifter rtps circuit that provides a continuous phase shift of 180 at a lband frequency was reported in reference 1. Surface index of tm and te surface waves on incident region. Restorative conferences, restorative circles, more informal modes of restorative dialogues, and the methods used in these dialogues e.
Mcmichaelet al method for determining optimal ebg reflection phase for low profile dipole antennas 24 fig. Brodziak jr1, sharon carnevale1, marcus chaney1, rachel wolff 2, angela d. Pdf circular monopole antenna for ultra wide band uwb. Sparameter simulation controller default sweep variable freq sweep plan can also be used see next slide. This tutorial teaches you how to perform the following tasks in hfss. Note that the resonator q of equation 46 and 47 is defined as q u, the unloaded q of the resonator. Ansoft hfss field calculator cookbook a brief primer and collection of stepbystep calculator recipes for use in hfss fields postprocessing. It should be noticed that, phase velocity of evenmode is greater than. University of california, san diego anisotropic artificial impedance surfaces a dissertation submitted in partial satisfaction of the requirements for the degree doctor of philosophy in electrical engineering electronic circuits and systems by ryan gordon quarfoth committee in charge. In this paper reflection phase property of ebg structures is proved using. Hi everybody i have been researching reflectarray antenna recently, but i encounter some problem. Techniques for analyzing antenna lattice structures richard remski, matt commens, and john silvestro ansoft corporation wireless and microwave technology conference tutorial session ra2 thursday, april 07, 2005 clearwater, fl. For te 20 mode a full sine wave is observed and for te 11 mode field intensity maximum at the center zero at the boundary.
There are lots of different types of antennas in the world. A new project is automatically created when hfss is launched. I have two examples i downloaded them from internet both of them are about finding ebg reflection phase. Design and fabrication of 12 ghz microstrip directional coupler for. He told me that the reason why he selected my book over others was. Phase characteristics of subwavelength antenna elements for. Reflection coefficient and transmission lines using the smith.
S11 and hfss optimal s11 for a dipole above an ebg. Dispersion brillouin diagram of mushroom type ebg structure obtained by hfss with periodic boundary conditions. Hey everybody, im simulating a dng metamaterial in hfss 12. Apr 19, 2016 contribute to courserepsecen452 spring2016 development by creating an account on github. Chapter maxwells equations and electromagnetic waves. I ve read the topics about this in the forum, there are 2 methods for this. A plot of sparameters of branch line coupler obtained from hfss simulations. Sparameter measurements basics for high speed digital engineers frequency dependent effects are becoming more prominent with the increasing data rates of digital systems. Phase characteristics of subwavelength antenna elements. Rectangular waveguide characterization using hfss 58 figure3. Pseudobrewster angle is typically at the 4 db point from perfect ground signal reflection at an outofphase point cancellation signal reflection at an inphase point augmentation near field is the area where the ultimate pattern is not fully. The scalability of the generalized logistic model to the infrared is shown and the accuracy in predicting the phase response is analyzed. The phase changes that take place upon reflection play an important part in thin film interference. Reflection and refraction at an interface,total internal reflection, brewsters angle, ee290f, 1 feb 2007.
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