Over 10,000 pages indexed!
redefining what an
engineering website should be.
(Seize the Day!)
My USAF radar shop
Hobby & Fun
Airplanes and Rockets:
My personal hobby website
My daughter Sally's horse riding business website - lots of info
My son-in-law's dog training business
|balun electrical model - RF Cafe Forums|
Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate
that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views.
It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if
you would like to post something on RF Cafe's
page, please do.
Below are all of the forum threads, including all
the responses to the original posts.
Post subject: balun electrical model Posted: Wed Sep 12, 2007 8:31 am
Joined: Wed Sep 12, 2007 8:04 am
I'm searching for an electrical model for a balun (type anaren BD2425J50100A00, a 1 to 1 RF transformer working at 2.45GHz)
- not a S3P parameters but a model with mutual inductance, capacitors and resistors - like a P-spice model and how can i proceed to find components value ?
Thank you for your help.
Post subject: Posted: Wed Sep 12, 2007 2:50 pm
Joined: Mon Jun 27, 2005 2:02 pm
I don't think that what you are looking for is available, as this is a passive RF device. The only interesting information of a Balun to my humble opinion are the S-parameters which you only need to model this device in terms of return losses and insertion losses.
As this is a passive and not active device there are no junction capacitances or inductances which are used in Spice model.
What would you like to know: The capacitance and inductance of the transmission lines of which the Balun is made of?
Post subject: Posted: Thu Sep 13, 2007 3:23 am
Joined: Wed Sep 12, 2007 8:04 am
I already have the S-parameters of the balun but i would like to simulate (in term of current and power) the output of my silicium with the output matching network (on my board).
OK it's a passive device and so the model of a balun should be equivalent to a network composed by 2 coupled inductors, 1 resistor , 1 capacitor(or more) ... that's what i would like to find.
Post subject: Posted: Fri Sep 14, 2007 2:57 am
Joined: Sun May 14, 2006 8:53 pm
If you have s-parameters, you could apply these to your model. And fit the values to match the response.
Mutually coupled inductors, with series resistance (for line loss) and coupling capacitor (for line coupling) would be a start.
Post subject: Posted: Tue Sep 25, 2007 3:08 am
Joined: Tue Mar 15, 2005 11:43 pm
To add the comments above, I believe that Microwave simulator ,e.g. Microwave office has the ideal model of the Balun, which you can modify the parameters to match the available s-parameters.
And if I am not wrong, this model will enable you to simulate nonlinear analysis (current and power).
Post subject: balun practical examplePosted: Sat Nov 24, 2007 3:37 am
Joined: Fri Nov 23, 2007 11:59 am
I would like to use this thread and ask where I can find a good practical design example of a balun for L band.