Hi Marek, As I was the co-TPC of the ARFTG conference where this paper has been presented, I contacted the main author, Dr. Don DeGroot from NIST. He is not...
Dear Jayesh, I did not try the two tier cal as Dylan recommend so I do not know the advantages and disadvantages of this method. Concerning the two lines...
Hi all I have read a theory of LRRM ( by F. Purroy and L. Pradell) where they assume that the reflection coefficients of the line are null but I don't think if...
Dear David, I think going to a two-tier cal using Multical as Dylan suggested should give you a better agreement with you IE3D simulations,and since you...
... Dylan, I think a lot of people here (including myself) would be very much interested in a paper of your NIST colleagues "Multiline TRL Revealed". How can...
Hi David- MultiCal calculates the reference impedance from the capacitance of the line, which you can measure, and the propagation constant of the line, which...
Hi Dylan, I downloaded the Multiline program but had no chance to start running it. I certainly hope to benefit from this program. I would like to know how the...
Hi All- If you already use two lines, why not add a reflect and do a two-tier TRL calibration? Better yet, you could even add more lines and increase the ...
Dear Ege, I extract the launcher parameters as well as the line parameters analytically for each frequency from the two S-Parameters matrices : The short line...
Dear David, By using the 2-line method, can you extract the launcher parasitics analytically, or do you have to make some kind of optimization during the ...
Dear Dylan and Jayesh, Allow me to share with you the procedures we use for on wafer calibration and line parameters extraction. We use commercial Alumina...
... Dear Jayesh, What you propose is certainly possible, and represents a most reasonable approach to solving the problem of determining the reference...
Dear Dylan, Thanks for reply and pointing me to the FAQ,I have been reading all the interesting papers by you,Roger Marks and others all these days and it's...
Dear David, To obtain the software you must follow the instructions on the website and include the sentence "I have read and agree to the terms and conditions...
Hi Dylan, I downloaded the program as well as the manual. However, when I try to extract the files from the "multi_pc.zip" file, there is a request for a...
... Till now I don't actually have any PNA available so that I could spend some time with it and figure out how to program it. This would be quite a task...
Hi Mark- I believe that the PNA series does have a 4-sampler architecture. However, MultiCal does not support the PNAs and changing MultiCal to support the PNA...
All, I plan to perform a custom TRL calibration with a PNA series analyzer. I wanted to make a switch term correction in a similar way as with 8510. Both are...
Hi David, You can download the MultiCal software package from the software page on my website at http://www.boulder.nist.gov/div813/dylan/. It was designed to...
I use LRRM Off Wafer calibration and deembedding procedure and get accurate measurement data up to 50 GHz. However, I would like to try TRL multi line...
Dear Jayesh, In fact, one does not have to use an electromagnetic solver to characterize on-wafer calibration standards. A good example is the measurement of ...
I have a question about two-tier calibration.If do a first tier cal using an ISS(to remove the effect of the probes)and then have calibration sturctures on my...
Dear Mark, Small inductances are always difficult to measure at high frequencies, no matter how good the calibration. So I would think that you would want the ...
I've been placed in charge of a test chip program between Mentor Graphics and TSMC that aims to create a series of test structures in TSMC's new 90nm fab...
Dear Dane, The effective dielectric constant measured by MultiCal is really a normalized form of the propagation constant gamma of the transmission line. An...
I recently performed a calibration utilizing Multical and HP BASIC with a 110 GHz network analyzer. The measurement involved conductor backed CPW lines (thru,...
First of all apologies for the length of this and for the crossposting but I though this possibly fitted both groups. Looking at the two moderator's most...
Dear Damien, Thank you so much for posting our first question! I would look at these references: A. Davidson, K. Jones, E. Strid, "LRM and LRRM Calibrations...
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