https://rf-tools.com/lc-filter/

https://tools.analog.com/en/filterwizard/



https://datasheet.datasheetarchive.com/originals/library/Datasheet-080/DASF001217.pdf
(seems like lots of typo's in this, but probably a useful real plot of two materials)




https://www.microwaves101.com/encyclopedias/transmission-line-loss#:~:text=Attenuation%20due%20to%20dielectric%20loss%20tangent%20(%20D),-Loss%20due%20to&text=Loss%20tangent%20is%20also%20known,proportional%20to%20SQRT%20of%20frequency



https://www.microwaves101.com/encyclopedias/transmission-line-loss#:~:text=Attenuation%20due%20to%20dielectric%20loss%20tangent%20(%20D),-Loss%20due%20to&text=Loss%20tangent%20is%20also%20known,proportional%20to%20SQRT%20of%20frequency).


Excellent chapter on Transmission Lines :

http://ece.uccs.edu/~mwickert/ece3110/lecture_notes/N3110_2.pdf


http://unh.edu/ece/ECE603/Acrobat%20Files/Loss%20and%20Skin%20Depth.pdf




-------

In Cadence I used an mtline element from analogLib

  Num of lines : 1
  Model name   : (blank)
  Multiplicity factor : 1
  Max signal frequency : 50e9
  Type of Input : FieldSolver
  Generate noise : (blank)
  Transmission line type : coplanar
  Model type : wideband
  Number of dielectric lay : 1
  Number of Ground Planes : 2
  Rel dielectric const of : 4.2
  Dielectric layer thickness : 500e-6
  Dielectric loss type : tangent
  Dielectric layer loss : 0.02
  Signal line width : 300e-6
  Signal line thickness : 40e-6
  Signal line height : 230e-6
  Signal line spacing : 1000e-6
  Gnd Plane thickness : 40e-6
  Ground plane conductivity : 59.6e6


(Note that "wideband" will calculate a bunch of RLGC matricies, about 5 per dacade of frequency.
(If you choose narrow band, it will calculate a single RLGC at fmax, and then just use that, but note
that I think this would not give the correct DC value for R. Lossless I think just gives you the low freuqency
RLGC, so I believe that it would still have "Loss" for the DC resistance.)




(There are so many options and combinations, many of which cannot be specified by the AnalogLib symbol,
 but this provides an extremely good way of getting up and running. Also note that much of this element is
 not documented, or not documented clearly. You really need to QA for yourself what ever you do. With this
 analogLib element, you can push the button to preview it which is extremely helpful with the Display Cross
 section button)

(Also, in using this model, be careful with timestep size and other things. QA everything, and it might work
in one circumstance, but not in another. For example, I found problems with certain risetimes of signals, and I
think I had to force a small timestep)

A microstip line is sort of by definition you have one ground planes
A strip line is sort of by definition you have two ground planes







When you use this element, it gives you a RLGC matrix that you can read.
The RLGC for the options above is given over the frequency range




 %% Helpful Info :

   copper has a conductivity of 59.6 [Siemen/m)]
   copper has a resistivity  of 0.01678 [ohm*m]

   1 oz copper is about 35e-6 meters thick or about 1.38 mil thick

   Pre-Preg is the dielectric between signal layers and can be up to 15 mils thick (380e-6 meters)
   Typical Pre-Preg might be 5 mils thick (127e-6 meters)

   core is like a prefabricated dielectric layer, like the starting PCB, and might be 15mil or greater thickness
   (see https://www.pcbuniverse.com/pcbu-tech-tips.php?a=7 )