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transmission line calculator. This program allows you to calculate a variety of parameters related to PCB transmission lines for a variety of different configurations and loading conditions. The current version is 2.2, updated 12/11/97. Version 2.2 corrects errors with embedded microstrip formulas in version (...)
transmission line calculator Analysis/Synthesis of various transmission line structures. Uploaded by Fritz Dellsperger
Hi transmission line calculator Transcalc is an analysis and synthesis tool for calculating the electrical and physical properties of different kinds of RF and microwave transmission lines. Transcalc is built using the GIMP toolkit (GTK+) for its GUI interface. 1. h**p://transcalc.sourceforg
Planar transmission line calculator from AWR. Can analyze and synthesize line impedance and electrical lengths etc
Hi all, transmission line calculators in ADS and AWR are valid over what frequency range? and Can i have formula for finding length width and spacing for coupled microstrip line? thanks
Look for SigXplorer application in cadence installed directory or start menu. open this application, you'll find different transmission lines topology. On right hand parameters pan, you can change the values to see changes in impedance. For impedance calculation, variables are- trace width, length, height, Thickness. Please see following docu
txline is a free calculator that can solve this and is quite accurate. For given F, Er, H and T for 50 ohms set w = 1.74mm. The width you gave has a characteristic impedance of 114.7ohms
Pls help me where I can find suspended stripline calculator thx Added after 9 minutes: Hello There are lot of free calculators are available from AWR Txline Appcad Online calc
transmission line impedence calculator
Hi Cheng ! It's impossible to represent a microstrip T.L. with just impedance and phase becasue this T.L. is distributed and has phase accumulation as a function of a distant (length). Its catagorized as distributed T.L. and not as lumped (discrete). I can know for sure that you can simulate and calculate any discrete/lumped
Hi .. Is there any simulator or formulas available for designing a 50 ohm transmission line for patch antenna. can i get some theoratical formulas for designing a inset fed patch antenna??? Thanks in advance
TX line, the free transmission line calculator from AWR is one of the most useful tool.
Hi All, I'm new to ADS. I'm a student, and needed your help, I want to design a Microstrip transmission line using ADS. I know Zl = 150-75i ohm , , Zo= 75 ohm , l ( in terms of lambda) , Di-electric constant= 2.22, h= 3 mils, Zg=50 ohm Need to find Zin,Reflection Co-efficient, S11 ( at input).If you can guide me how to go about it, i will rea
Microstrip transmission line Impedance calculator for PCB's using VB Script I hope it can help
Hi guys While projecting LPDA antenna I found a problem with impedance of transmission line. In literature the transmission line is built by two round conductors and its impedance is given by equation. But commercial LPDA antennas are built by square or rectangle conductors. Can you help me where can I find impedance (...)
You can try TXline from AWR or QUCS, that is a simulator with an embedded tool taht allows the calculation of many transmission lines:
For stripline transmission line.DOS ver.
A very useful free calculator with tools for simple RF calculations as transmission line, resonance, system and so on. I think it is a must to download.
There are CPW without ground plane, as described above, and also, there are CPW with ground plane underneath. The main difference between microstrip line and coplanar waveguide is indeed the presence of ground lines on the same layer as signal trace, spaced at equal distances in one side and the other. CPW has some advantages over microstrip. The i
Go here You will get a free, nice looking transmission line calculator. This is from AWR.
when we say that track length is transmission line ? my question may be silly! Binu G
Hi kent, Is it you are referring to effective dielectric constant!!! Then use transmission line calculator... Since some of the electric energy is stored in the air and some in the dielectric, the effective dielectric constant for the waves on the transmission line will lie somewhere
C. Caloz and T. Itoh, Electromagnetic Metamaterials: transmission line Theory and Microwave Applications. New York: Wiley, 2004.
TX-line is a free, easy-to-use, Windows-based interactive transmission line calculator for the analysis and synthesis of transmission line structures. TX-line enables users enter either physical characteristics or electrical characteristic for common (...)
Information and download page at mdtlc.sf.net Open source and based on atlc, but has gui and runs in win32 environment. No dlls required. Allows for modelling of etch taper and multiple dielectric values.
Not sure if this helps, but you can find the propogation delay using a transmission line calculator like It allows for solder mask and substrate dielectric to be included in the calculation. An improved solder mask coating drawing algorithm should be available in about 3 weeks.
Hi, Does anyone know any free 2-d electromagnetic simulation software that can calculate transmission line parameters like characteristic impedance, propagation constant etc. including dispersion effects? Thanks.
Hi all! I am looking for some small program wich allows me to simulate simple transmission (I do not even need to modelate them as real tx lines, i.e. microstrip, guideline, etc) lines. I just want to see how the line behaves when a square pulse is sent and, for example, a resistor terminator is placed (...)
Hi friends, I found this nice calculator for RF Design. It's very useful to plot smith chart without using actual smith chart paper so that there is no drawing and calculation error. It can be used for students who start to learn transmission line and impedance matching network like beginner course. It serves as a reference for expert (...)
When you design transmission line (TL) frequency is not in the equations for geometry, only for losses. Good TL does not depends on frequency unless you specifically need to get some length (quoter wave or certain length for resonator, etc). The best inexpensive TL design tool is TL calculator in LINC2 RF design program. It provides the same (...)
There are free PCB transmission line 2D field solvers that can be used. TNT ( ), has a good interface and gives good results. MDTL ( ) isn't as well developed, but it still gives good results for differential traces. If all you want are close numbers, and precision isn't requ
you can download TX-line transmission line calculator from below link
Hello, The free TX-line transmission line calculator from AWR is helpfull in calculating Coplanar waveguide /Grounded coplanar WG parameters & seeing effect on loss.. The Txline calculator available freely on AWR website... Also AWR Microwave Office (MWO) has good CPW mo
hi friends I'm new to CST MWS. I have designed single arm spiral antenna and feed by microstrip line as shown below. I got the frequency VS S parameter graph is not a proper one. I don't know why it is. I want to get frequency VS radiation graph and frequency VS returnloss graph. How can I get it using CST. plz can any one help me ?.... Any
I have a microstrip line (rf trace with Zo=50 ohm). Somewhere on the trace I need to create .67nH inductor. What formula do i use to do this? or/and What free sw is available that I can use to do this? I found a calculator that finds the inductance if you provide the: w =width of the strip in inches, b = the length in inches, h = the d
You have to know what is the Dielectric of the material you are using to get λ εr = ?. If you put those dimensions listed on a PCB w/ εr = 4.3 it might be good, but if your PCB has an εr = 9 it might be way off. Look for APPCAD or go to Rogers PCB website and look for a free web transmission line calculator. (...)
Most of the dedicated TL tools doesn't have this option, only if you use a full EM simulator. You can make your own spread sheet using formulas provided by Wedell's book "transmission line Design Handbook" page 196, 197, 198 (attached)
25mm is the 1/4 wavelength in air. In the substrate, the value will be smaller. If you would have field only in the substrate, and no field in air, then the wavelength would be smaller by a factor SQRT(epsilon_r) exactly. In microstrip, depending on the line width, most field is in the substrate but some field is in the air, so that the effecti
Hi all. I know this will be a stupid question but I'm really confused. Attached is a picture of my amplifier design. Transistor used is ATF 36077 and topology is cascaded, reactively terminated amplifier. The microstrip transmission lines are supposed to be for matching purposes however I don't know what value of impedance to put on the transmi
Hello Rajendra, Yes, I went through your problem & found the following… With the Substrate data you are using I think it is very difficult to get 328 Ohm Microstrip line trace As I calculated using some free tool it shows that W is too small to fabricate or may not be possible with your process what you have ( I got W= 0.0013 mm from [ur
If you use a transmission line calculator as TX line from AWR you will see that for the same dielectric, at high frequencies, using thicker substrate you get lower loss than using thinner substrate. AWR | TX-line | Optional Products - TX-line
Hello, Use the Txline -transmission line calculator to get the exact width & Length of the Microstrip lines for say Er=4.3 (with substrate height =0.8mm) & 64.9 ohm then the approax values are W=1.5 mm & lamda/8 electrical lenngth L=25 mm... Follow the similar steps to calculate other
and successfully obtain the lumped circuit for the filter, its odd and even impedance. but when i trying to find its dimension and spacing If you have the required even and odd mode impedances, you can use a transmission line calculator to calculate the coupled dimensions. Here is a free calculator: [url=w
The calculator over at gives me 0.156 cm microstrip line width These 1.56mm are consistent with results from another transmission line calculator (AWR txline). This is a reasonable, expected value for 50ohm line impedance at 0.8mm substrate height. I have not (...)
Hello- I'm using a few different microstrip calculators, but when I draw my trace, the suggested width (2.9mm) seems huge. calculator here: transmission line needs to be 50 ohms as it co
hey guys!!!!!!!!!!!!! i m really finding difficult in calculating the dimensions of the cpw fed monopole antenna.. any ways i calculated the length and width of cpw fed by transmission line calculator.. i will b attaching the file which i have designed nt gtng any idea hw to prove dis dimensions...plzzz help me out...dis is rea
ADS (Advanced Design System) is a licensed software and linecalc is tool of ADS. jeeudr has already mentioned the hierarchy to locate the tool. In case you don't have ADS, you can try the free AWR Txline calculator. The link to download the Txline calculator is:
I just tripped over a free AWR transmission line calculator available on their site for downloading. It also has a smart phone application, also free. Polar9000 is a great(but not free) tool. If you want more details Wadell's transmission line Design Handbook is a good reference. Azulykit You (...)
Appcad which can be downloaded from has a coplanar transmission line with ground plane under it calculator that you can use to make the calculations.
Hi, Roughly, you can consider a propagation time of 6,7 ps/mm in a FR4 based PCB. Various transmission line configurations will barely change this value, and you must work at extemely high frequencies in order for this parameter to count. Almost all calculations formula for propagation time are approximate, and if you want to know this parameter e