Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Sorry for the (maybe) ignorant question: But if I simulate the component with 4-ports, does ADS has some transformation technique?
Or you mean you would do the ADS simulation with 2-ports? If you would do the simulation with only 2-ports, how would you calculate the inductance and Q of both...
I agree with you that the Q curves look rather typical!
Is there any kind of equation for that 4-port to 2-port parameter transformation, or can you do it in the ADS simulation?
Thank you
Why do you say they don't look plausible? Because of the high quality factor? take into account that I am simulating this with a 9-metal 65nm technology using metal 9 (thick metal) and metal 8. Therefore I am far away from the substrate. That is the reason why I can achieve such good quality...
I have attached a screenshot of how the ports are arranged. I can calculate the inductance and quality factor of both inductors by using S(1,1), S(2,2), S(1,2), S(2,1) for the primary and S(3,3), S(4,4), S(3,4), S(4,3) for the secundary.
However, for the coupling factor k (=M/sqrt(Ls*Lp)) I...
Hello Guys,
I have simulated a transformer in ADS Momentum (two inductors) with 4-ports. Therefore I have a lot of S-parameter component.
If it was a two-port structure, the mutual inductance would be imag(Z12)/omega.
For a four port structure am I correct to assume that the mutual...
Hello Guys,
I am performing an S-Parameter analysis in spectremdl, and extracting the S-par and Z-par results automatically:
alias measurement zpmeas {
run sp1
// print sp analysis results
print fmt("%-15e%-15e%-15e%-15e%-15e%-15e%-15e%-15e%-15e%-15e\n", numind, xval(mag(s(1,1)))...
in QPSS I use harmonic balance because from my experience it is much faster, and the results are relatively similar.
I send you the analysis statements.
Thank you pancho_hideboo!!
By some other thread here, I saw those formulas and reached that value. The problem is that if I perform a qpss+qpac with a power sweep (from -60 to 10dBm) and calculate the ip3 with this method I get the value of IIP3=1.85dBm.
Of course this changes if I change the...
Dear all,
I use spectreRF in order to calculate circuit performances in a linux command line (i do not use virtuoso).
I am currently using a pss+pac analysis and a rapid IP3, in order to get the IP3 value. When I do so, spectreRF writes a file named pac.ip3.pac, however, the IP3 value is not...
I mean that the conversion gain is -350dB and the noise figure is 350 dB. Which is clearly impossible since all circuits function as expected separately and the LNA+MIXER gives exactly the expected performances. I attach a figure of the test bench working. The VCO is substituted by a Vsin.
Yes, all circuits function perfectly well all by themselves. I guess the performances should be calculated using other analysis, could that be the issue?
Dear collegues,
I am trying to simulate an RF front-end (LNA+VCO+MIXER) in order to get performances such as conversion gain, noise figure, etc.
If I simulate only the LNA+MIXER and use a Vsin to emulate the behavior of the VCO I can perform a PSS+PNOISE+PAC and get all the desired...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
