Microstrip transmission line characteristic impedance calculator. The electrical parameters may be determined from specified physical parameters, or the physical parameters required to meet a given set of electrical parameters may be found. This calculator takes trace thickness into account and is not limited to a range of w h ratios. You will need to email your computer name and a copy of the purchase. Using the microstrip line calculator, a width of 1. This relationship can be rearranged to show width, w, explicitly as.
The mwi2010 microwave impedance calculator is a transmission line modeling tool for electronics engineers. Rogers is offering the newest version of its microwave impedance calculator, mwi2010 for free download. A microstrip is a type of electrical transmission line used to transmit rf signals and are commonly fabricated using printed circuit board pcb technology. Having an outside pcb transmission line calculator can save you some hassle in the future. Units do not matter as long as they are consistent. Hello, im confused about which calculator to use for microstrip line.
The microstrip is a very simple yet useful way to create a transmission line with a pcb. Wu microstriplines microstrip structure inhomogeneous structure. A shielded microstrip transmission line consists of a substrate, a microstrip, and a shield. Utilizing a pcb transmission line calculator makes design. I think the both frequencies should be equal because minimum s11 means the lowest reflection, that is to say,incident wave can pass undisturbedly. Microstrip calculator online microstrip impedance finder. Edge coupled microstrip impedance tool eeweb community.
It uses linear interpolation, and is explained on this page. Download multiple dielectric impedance calculator for free. Appcads developer is now part of avago technologies, subsequently appcad has been rebranded from agilent technologies to avago technologies. Pcb impedance calculator single ended differential pair. If you really want to do this, better use the coupled microstrip model in the loss calculator instead to get the right loss value to compare to the differential loss plotted from measurements. Txline software is a free and interactive transmissionline utility for the analysis and synthesis of transmissionline structures that can be used directly in microwave office for matchingcircuit and other highfrequency designs users need only specify the material properties for common transmission mediums such as microstrip and stripline and either the. Microstrip line inverted,suspended,shielded microstrip line. Analysis also includes a shielded enclosure with metal lid 100 mils above the surface of the alumina substrate. As line loss increased,the difference also increased.
Microstrip pcb impedance in an electric circuit causes an electromotive force to be generated by a change in the current flowing. The characteristic impedance z o of a microstrip transmission line can be calculated using the active calculator or the equations at the bottom of the page. High frequency electronics toolbox for microwave engineers, rf professionals, emc technicians, radioamateur,students, astronomer and electronic hobbyists. Some studies on microstrip patch antenna using pcaad 5. Advanced design system tutorialmicrostrip line design mini knowledge. Microstrip line calculator cnet download free software. By understanding the microstrip transmission line, designers can properly build these structures to meet their needs. The width of the traces has a direct impact on the capability of the power supply to minimize noise. Multiple dielectric transmission line calculator using a 2d field solver to compute the transmission line characteristics from the circuit trace dimensions entered by the user. In this pcb calculator, microstrip line of capacitance per unit length is expressed in fm. The software also has some capabilities for predicting transmission line losses as well.
Realizing small inductor values on a pcb by using microstrip lines. The analyze method computes the analyzedresult property of the transmission line using the data stored in the rfckt. Cgic, 1996, 1997, 1998, 1999, 2000 by thomas boutell and. Pcb impedance calculator single ended differential. Due to the fields within two guidedwave media, the microstripdoes not support a pure tem wave. There are four types of impedance used in characterizing differential trace impedances. The transmission line parameter calculator app computes resistance r, inductance l, conductance g, and capacitance c as well as the characteristic impedance and propagation constant for some common transmission lines types, such as a coaxial line, twin lead, microstrip line, and coplanar waveguide cpw. Pasternacks microstrip calculator computes a microstrip s heightwidth ratio, impedance and relative dielectric constant for a microstrip transmission line. Tzonglin wu department of electrical engineering national taiwan university prof. Description the capacitance calculated using this tool is the capacitance between a flat conductor and the ground plane over the conductor length. The resonance frequency of s11 and s21 were different. Tx line software is a free and interactive transmission line utility for the analysis and synthesis of transmission line structures that can be used directly in microwave office for matchingcircuit and other highfrequency designs users need only specify the material properties for common transmission mediums such as microstrip and stripline and either the. Advantages and disadvantages of microstrip line are mentioned below. Is there any free software where i can design a microstrip patch antenna.
Microstrip transmission line simulation quickfield fea. Microwave impedance calculator from rogers corporation. Enter values for zo and electrical length to determine the physical width and length of the microstrip line. Stripline is a transmission line trace surrounded by dielectric material suspended between two ground planes on internal layers of a printed board. This calculator finds both odd and even transmission line impedance. The microstrip calculator determines the width and length of a microstrip line for a given characteristic impedance zo and electrical length or vice versa. Microstrip capacitance model capacitance between the upper conductor and ground plane is. Easy microstrip line calculator from agilent technologies appcad version 3. This cgi program makes use of the cgic library which carries the following. The analyze method treats the microstrip line as a 2port linear network and models the line as a transmission line with optional stubs. Follow the installation guide to install the software on your pc.
Microstrip inductance model inductance of the loop bounded by the upper conductor and ground plane is. Inductance of microstrip lines microstrip lines used as shunt inductors application note an258, rev. Microstrip analysissynthesis calculator sourceforge. This article describes microstrip line variants viz. The microstrip line calculator calculates the characteristic impedance, effective dielectric constant and time delay per unit length of a microstrip line. This calculator is provided free by chemandy electronics in order to promote the flexibox. In the ipcs publication ipc2141, the impedance of a microstrip line is given by. When the longitudinal components of the fields for the dominant mode of a microstrip. Download the file here or directly from jeans website at. This is the current, released version of appcad previous version was agilentbranded v3. Is there any free software where i can design a microstrip. Calculate microwave impedance with transmissionline. Microstrip is most popular structure used for rf design and product development due to easy in fabrication and complete exposure for troubleshooting.
Pasternacks microstrip calculator computes a microstrips heightwidth ratio, impedance and relative dielectric constant for a microstrip transmission line. A crosssection of a microstrip transmission line is shown below. Capacitance is the capacity of an electric circuit to store an electric charge. Microstrip line design in hfss part1 use captions. Ads advanced design system tutorialmicrostrip line design.
The transmission line is directed along zaxis, its cross section is shown on the sketch. This tool calculates key parameters for most common microwave transmission lines, including microstrip, stripline, and coplanarwaveguide transmission lines. This calculator provides accurate microstrip transmission line analysis and synthesis. Heres a reverse microstrip calculator a spreadsheet that lets you specify impedance and solves for line width. Modeling approximation can be used to design the microstrip trace. This example shows a microstrip branchline coupler on alumina er 9. The softwares intuitive graphical user interface gui screen allows a user to select from a variety of different transmissionline types, including conventional microstrip, edgecoupled microstrip, conventional stripline, offset stripline, and conductorbacked coplanarwaveguide cpcpw transmission lines. A simple microstrip transmission line is design here. Modeling approximation can be used to understand the impedance of the differential microstrip transmission line. The edge coupled differential microstrip transmission line is a common technique for routing differential traces. Txline 2003 microstrip, stripline, coplanar waveguideground, round coaxial, slotline, coupled microstripstripline txline 2003. Ansys hfss tutorial simulate and analyze an example of microstrip line drew handler, jerry yang october 20, 2014. The tool is very easy to use and is fairly accurate.
567 632 857 844 538 1021 1330 1411 363 604 494 659 1474 777 1246 1410 1352 591 713 1367 98 796 514 1310 101 1349 552 1464 1225 1145 630 924 1212