73 Threads found on edaboard.com: Transmission Line Calculator
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 (...)
Professional Hardware and Electronics Design :: 17.09.2001 04:07 :: Robin Hood :: Replies: 1 :: Views: 3079
transmission line calculator
Analysis/Synthesis of various transmission line structures. Uploaded by Fritz Dellsperger
RF, Microwave, Antennas and Optics :: 17.09.2001 08:35 :: Robin Hood :: Replies: 2 :: Views: 2436
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.
Software Links :: 03.04.2003 09:03 :: jimjim2k :: Replies: 0 :: Views: 598
Planar transmission line calculator from AWR. Can analyze and synthesize line impedance and electrical lengths etc
Software Links :: 08.04.2005 16:39 :: daboo :: Replies: 0 :: Views: 1627
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?
RF, Microwave, Antennas and Optics :: 17.04.2011 05:20 :: sohkha :: Replies: 10 :: Views: 1024
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
PCB Routing Schematic Layout software and Simulation :: 15.05.2013 05:57 :: mishrashashi :: Replies: 1 :: Views: 356
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
Analog IC Design and Layout :: 22.08.2013 12:07 :: reidintransit :: Replies: 1 :: Views: 249
Pls help me where I can find suspended stripline calculator
Added after 9 minutes:
are lot of free calculators are available
from AWR Txline
RF, Microwave, Antennas and Optics :: 19.09.2005 03:37 :: ADS_RFMW :: Replies: 2 :: Views: 3867
transmission line impedence calculator
Electromagnetic Design and Simulation :: 25.06.2006 11:48 :: liuxuming007 :: Replies: 0 :: Views: 616
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
Electromagnetic Design and Simulation :: 01.08.2006 14:50 :: xxargs :: Replies: 14 :: Views: 4726
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
Electromagnetic Design and Simulation :: 23.06.2010 13:31 :: nilux :: Replies: 1 :: Views: 948
I am trying to make a single diode harmonic mixer with a RF matching network at the input (5.25GHz) and IF matching network at the output (10.5GHz). I am trying to use transmission lines and stubs in a substrate of Er = 2.2. How do I calculate the width of the lines?
Should I match at one frequency or my approach is (...)
RF, Microwave, Antennas and Optics :: 15.08.2010 21:48 :: MobiNaz :: Replies: 7 :: Views: 2246
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
RF, Microwave, Antennas and Optics :: 04.02.2011 00:52 :: antennadesign54321 :: Replies: 4 :: Views: 2084
Microstrip transmission line Impedance calculator for PCB's using VB Script
I hope it can help
RF, Microwave, Antennas and Optics :: 03.05.2011 08:41 :: Otgonbaatar :: Replies: 4 :: Views: 632
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 (...)
RF, Microwave, Antennas and Optics :: 28.08.2011 12:28 :: microwave_1960 :: Replies: 3 :: Views: 775
You can try TXline from AWR
or QUCS, that is a simulator with an embedded tool taht allows the calculation of many transmission lines:
PCB Routing Schematic Layout software and Simulation :: 12.02.2013 16:09 :: albbg :: Replies: 3 :: Views: 1013
For stripline transmission line.DOS ver.
Software Links :: 11.04.2003 02:27 :: gdxk :: Replies: 7 :: Views: 4411
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.
RF, Microwave, Antennas and Optics :: 19.10.2003 13:36 :: g579 :: Replies: 2 :: Views: 1575
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
RF, Microwave, Antennas and Optics :: 19.04.2004 14:01 :: pisoiu :: Replies: 5 :: Views: 5895
You will get a free, nice looking transmission line calculator. This is from AWR.
Electromagnetic Design and Simulation :: 05.03.2005 20:16 :: svarun :: Replies: 12 :: Views: 14001
I read LVDS spec a few day ago. I found these words, transmission line impedance. I don't know how to measure this value on printed circuit board. And how can I reach output impedance match? Wish your help. Thanks.
PCB Routing Schematic Layout software and Simulation :: 05.10.2005 11:25 :: nemolee :: Replies: 6 :: Views: 1663
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
RF, Microwave, Antennas and Optics :: 08.10.2005 01:10 :: Manjunatha_hv :: Replies: 2 :: Views: 3870
C. Caloz and T. Itoh, Electromagnetic Metamaterials: transmission
line Theory and Microwave Applications. New York: Wiley, 2004.
Electromagnetic Design and Simulation :: 01.02.2006 13:29 :: snkhan :: Replies: 3 :: Views: 3838
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 (...)
Analog Circuit Design :: 31.10.2006 16:58 :: d_atanasow :: Replies: 8 :: Views: 3173
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.
Software Links :: 27.09.2007 12:08 :: kgoulet :: Replies: 0 :: Views: 434
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.
RF, Microwave, Antennas and Optics :: 23.11.2007 16:59 :: kgoulet :: Replies: 6 :: Views: 1274
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.
Electromagnetic Design and Simulation :: 14.01.2008 23:59 :: tuncay :: Replies: 8 :: Views: 2519
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 (...)
Electromagnetic Design and Simulation :: 07.02.2008 12:30 :: AmigoMaxwell :: Replies: 9 :: Views: 1471
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 (...)
RF, Microwave, Antennas and Optics :: 19.02.2008 19:51 :: pak_soft :: Replies: 0 :: Views: 1311
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 (...)
Electromagnetic Design and Simulation :: 27.06.2008 03:28 :: RF-OM :: Replies: 13 :: Views: 3030
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
PCB Routing Schematic Layout software and Simulation :: 01.11.2008 17:02 :: House_Cat :: Replies: 5 :: Views: 4297
you can download TX-line transmission line calculator from below link
PCB Routing Schematic Layout software and Simulation :: 27.02.2009 07:23 :: kspalla :: Replies: 4 :: Views: 1148
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
RF, Microwave, Antennas and Optics :: 16.04.2009 00:46 :: Manjunatha_hv :: Replies: 4 :: Views: 4366
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 ?....
Electromagnetic Design and Simulation :: 01.12.2009 08:03 :: kaandee :: Replies: 4 :: Views: 1953
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?
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
PCB Routing Schematic Layout software and Simulation :: 02.02.2010 10:43 :: robismyname :: Replies: 1 :: Views: 2368
i wanna design a microstrip patch antenna with following specifications
with center frequency at 1.960Ghz
but now m unable to understand electrical length n characteristic impedence of line in degrees...
i dont (...)
RF, Microwave, Antennas and Optics :: 27.03.2010 04:52 :: mirzaahmad :: Replies: 16 :: Views: 6788
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)
RF, Microwave, Antennas and Optics :: 31.08.2010 03:11 :: vfone :: Replies: 2 :: Views: 2649
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
RF, Microwave, Antennas and Optics :: 13.11.2010 08:11 :: volker_muehlhaus :: Replies: 2 :: Views: 1097
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
RF, Microwave, Antennas and Optics :: 10.01.2011 04:23 :: rcgalicha :: Replies: 2 :: Views: 754
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
Electronic Elementary Questions :: 18.02.2011 07:00 :: Manjunatha_hv :: Replies: 2 :: Views: 1260
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
RF, Microwave, Antennas and Optics :: 18.03.2011 13:34 :: vfone :: Replies: 7 :: Views: 859
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
RF, Microwave, Antennas and Optics :: 24.08.2011 00:04 :: Manjunatha_hv :: Replies: 1 :: Views: 697
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
RF, Microwave, Antennas and Optics :: 24.11.2011 10:16 :: volker_muehlhaus :: Replies: 8 :: Views: 719
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 (...)
RF, Microwave, Antennas and Optics :: 23.04.2012 10:09 :: volker_muehlhaus :: Replies: 2 :: Views: 562
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
PCB Routing Schematic Layout software and Simulation :: 08.06.2012 23:04 :: Nora :: Replies: 9 :: Views: 4109
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
RF, Microwave, Antennas and Optics :: 01.11.2012 04:54 :: twinkledesmukh :: Replies: 0 :: Views: 243
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:
RF, Microwave, Antennas and Optics :: 13.02.2013 09:49 :: Twisha :: Replies: 7 :: Views: 463
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.
RF, Microwave, Antennas and Optics :: 29.05.2013 16:00 :: Azulykit :: Replies: 4 :: Views: 307
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.
Hobby Circuits and Small Projects Problems :: 16.02.2003 23:48 :: flatulent :: Replies: 2 :: Views: 2298
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
PCB Routing Schematic Layout software and Simulation :: 20.04.2004 02:06 :: pisoiu :: Replies: 5 :: Views: 1538