MMIC Inductor Transformer

[Tomp]

Has any one a tool to synthesize planar mutally coupled inductor?
I need this configuration to design a 7-13 GHz balun on GaAs.
I could analyze the inductors with MWO EM-Simulator, but I would like to avoid a trial and error synthesys without having a good starting point for dimensions, space, number of turns and width of the microstrips.
Thanks.

 

[BigBoss]

For the components on the silicon ( or on any substrate ) spiral or any kind of inductor or wounding shapes , you may use SONNET or Ansoft
Maxwell or ASITIC software which runs on UNIX or Windows ( with cygwin
emulator ).
Good luck..
Ps. I fyou need special papers on these components , write an e-mail to me :wink:

 

[filterman]

You could design the spiral inductor in a simulation software(serenede,ads), then go to the electromagnetic solvers, or just put in the E.M. solver the structure and directly optimize it(IE3D from Zeland which is quite referenced on elektoda).

 

[Tomp]

Thanks everybody for the advices.
What I'm searching for is a software with a built in model of planar coupled inductors (e.g. ASITIC), in this way I first get a rough idea of the initial dimensions performing an optimization with the model, then, I go through fully EM optimization.
By the way, is ASITIC fully working with the cygwin emualtor?