Getting started with hfss v9 for antenna design october, 2003 this getting started training material is intended for new users of hfss. The base hfss offering includes 3d and layout interfaces, 2. There is no licensing program to cover installation on personally owned student computers. Novel notched uwb filter using stepped impedance stub.
The primary goals of the proposed design are to get size reduction and dualband frequency response. Vias are used to route signal from one layer to another. Ansys hfss is a 3d electromagnetic em simulation software for designing and simulating highfrequency electronic products such as antennas, antenna arrays, rf or microwave components, highspeed interconnects, filters, connectors, ic packages and printed circuit boards. Rf microwave technology rf the rf technology is set of unique software tools for the graphical and electrical requirements of rf microwave circuits to dramatically reduce layout time. The hfss simulations results reveal some pieces of interesting information to consider for different structures in thin films. The ansys hfss is industry standard software made to simulate 3d fullwave electromagnetic fields. Dc component is naturally transmitted by all transitions with via holes.
To our knowledge, fabrication of transitions using inkjet printing technology has not been reported in the literature. Dualband bandpass filters based on metallic via holes. The objective is to provide a very thorough introduction to hfss as applied to antenna design, which may be followed stepbystep in. Then you can assign a conductor or a pec material to the via. Hfss 3d layout tool overcomes many of these issues and also provides many other features that you can explore. Elliot, lead engineer mitre corporation bedford, ma 01720. Hfss is high frequency structure simulator it is high performance full wave electromagnetic field simulator 3d volumetric passive device modelling that takes advantages of familiar microsoft windows graphical user interface. Drawing the vias is also quite easy using this tool. The way that the kernel in the integral equation is handled in those programs heavily depends on that thin wire approximation. Ansys hfss software is the industry standard for simulating 3d, fullwave, electromagnetic fields. The hfss features goldstandard accuracy, and advanced solver and highperformance computing technology, making it ideal for designing highfrequency and highspeed electronics found in communication systems, radar systems, satellites, smart phones, and tablet devices.
A comparison of ansoft hfss and cst microwave studio. A comparison of ansoft hfss and cst microwave studio simulation software for multichannel coil design and sar estimation at 7t mri m. Hfss is essential for designing highfrequency andor highspeed components used in modern electronics devices. Simulations were done by hfss software and implemented on the substrate roger ro3210 with dielectric constant of 10. Via holes have a metallization on the inner surface of the cylinder. Ansys hfss is an rf and microwave modeling solution for businesses of all sizes. Moreover, two spurline sections are employed to create a sharp notchedband filter for suppressing the signals of. Octave bandwidth printed circuit phased array element. Turner max planck institute for human cognitive and brain sciences stephanstrasse 1a, d04103, leipzig, germany abstract we present a comparison of rf simulations with ansoft hfss and cst microwave. Through hole via which crosses through the entire circuit board is used to achieve interconnection or internal components installed as a hole location. As through hole via is much more easy to implement and cost less, it is widely used in pcb design. When comparing ansys hfss to their competitors, on a scale between 1 to 10 ansys hfss is rated 5. Also few colleges have the licensed software installed in their labs.
The via holes are filled using copper conductor of same bulk conductivity as that for the resonators and ground. Octave bandwidth printed circuit phased array element paul g. Hfss is a commercial finite element method solver for electromagnetic structures from ansys. The final design parameters of the interdigital bandpass filter such as. Therefore, in figure 4 we present the results obtained for transitions with a few optimized via holes, transitions with only one viahole, and viafree transitions. Substrate integrated waveguide siw hfss simulation.
The science of software costpricing may not be easy to understand. This can bea straight trace inverted f, type trace, meandered trace, circular trace, or a curve withwiggles depending on the antenna type and space constraints. Hfss software free download latest version setup for windows. The proposed resonator is so formed to allow its four resonant frequencies in the uwb passband, which extends from 3. Vband vialess gcpwtomicrostrip transition designed on. Probe feed patch antenna2 probe feed patch antenna getting started click the microsoft start button, select all programsansofthfss 12hfss 12 or double click on the hfss 12 icon on the windows desktop adding a project and design to insert a design into an open project. The best way is to contact someone who is currently working on it or writing a paper. I want to design a patch antenna b y using cst software but i am facing a. Substrate integrated waveguide is an artificial waveguide synthesized and constructed with linear arrays of metalized via holes in the same substrate used for the planar circuit. Radiation coupling between via and signal traces in a.
This semester you will be doing a design project using ansys modeli ng tool. Rectangular waveguide hfss r objective getting started with hfss a tutorial using hfss, simulate an airfilled wr90 waveguide shown above. Accurate, productive and costeffective electromagnetic signal integrity software for physical design of interconnects for communication links. Ansoft must be installed on universityowned computers and should be utilized on the condition that its use is related to the instruction of graduate and undergraduate students. The acronym stands for highfrequency structure simulator. In this letter, a grounded coplanar waveguidetomicrostrip gcpwtoms transition without via holes is presented. The software was developed and released by ansys inc headquartered in pennsylvania, united states. Substrate integrated waveguide siw, also called postwall waveguide or laminated waveguide, is a promising candidate for millimeterwave and terahertz applications. Threedimensional 3d electromagnetic em simulation software has been a valuable tool of high frequency circuit designers for some time. Hfss high frequency structure simulator hfss is an industrystandard simulation tool for 3d fullwave electromagnetic field simulation. Software will automatically find the nearest ground to your metal. I have nicknamed it, the poor mans pcb via modeling methodology.
A comparative study between viahole and viafree grounded. This 2 day course will acquaint participants with all aspects of performing an em simulation using hfss. With the advent of ansoft hfss eigensolution capability and its integration with the parametric analysis capabilities of optimetrics, the rf designer can now utilize a commercially available, commercially supported software package for more general categories of pbg analysis and design. The filter parameters will be calculated using the design equations and are optimized using hfss software to achieve desired response. For port2 is passive, to meet the v condition that v2i 0,port2 and zload should be conjugate match. Analysis must include first three modes te10, te20, te01 3. As soon as the ld ratio is larger and the thin wire approx breaks down their results will become inaccurate. Analysis of photonic bandgap surfaces using ansoft hfss. The integrated schematic capture and layout editors in ansoft designer sv operate on a single database, which allows physical and symbol views of a design to be fully synchronized, and designers can work from either view. The simulated performance for three scattering parameters for the siw balunbpf combination are shown here, using hfss simulation software. Top and bottom are conductors with substrate in between them. The hfss 9 model shown in figure 5 developed for 7. How to create vias for simulation within hfss demonstration of creating vias with ansys hfss 3d layout view. The rf environment features a comprehensive library of parametrically controlled rf elements and provides the electrical intelligence to all custom element.
It is essential for the design of high frequency and highspeed. Nec uses some type of averaging in calculating the. Its capabilities include circuit simulation, automatic adaptive meshing, antenna array simulation, and others. Finite element electromagnetic simulator and design package. While using hfss, the biggest problem that we do not like about is that, geometries are hard to create. In the end some design guidelines are advanced in highspeed pcb design. Here are the options as to how you can access this software. The hfss file extension is mainly related to ansoft hfss software and used for its default project files ansoft hfss is a 3d electromagnetic field solver which uses finite element methods for sparameter and fullwave spice extraction of highfrequency and highspeed arbitrarilyshaped 3d passive structures. Hfss is one of several commercial tools used for antenna design, and the design of complex radio frequency electronic circuit elements including filters, transmission lines, and packaging.
Dualband bandpass filters based on metallic via holes author links open overlay panel ahmed hameed reja a ammar abdulhamed khader b syed naseem ahmad c asaad a. To obtain the field patterns, intrinsic impedance and wavelength for the first 4 modes. What is the bestway to model thru hole vias in cst. All the necessary hfss setup steps geometry and net selection, material properties, excitations and boundary conditions are completed in cadence software and transferred to hfss for solving the electromagnetic field and sparameters via a single click.
Development of ku compact broadband 1x4, 1x8 and 1x16. Its goldstandard accuracy, advanced solvers and highperformance computing technologies make it an essential tool for engineers tasked with executing accurate and rapid design in highfrequency and highspeed electronic devices and platforms. This paper presents a novel ultrawideband uwb bandpass filter using stepped impedance stub loaded microstrip resonator sislmr. The array was modeled on a computer using hfss software, for an infinite array environment. Modelling up to 45 ghz of coupling between microvias and. For example, pcb vias that interconnect traces between signal layers are almost always defined in a computeraided design cad system as solid cylinders. It is available in all the engineering academic labs. High frequency structure simulator for 3d electromagenetics hfss is a platform that includes multiple simulation technologies for component or system design. An example of a differential via structure, shown in figure 1, is representative of vias used to connect surface mounted components or backplane connectors to internal layer traces.