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fxhfzy
Post subject: help about push-pull amplifier Posted: Sat Jul 04, 2009 1:45 am

Captain

Joined: Fri Jun 26, 2009 6:22 am
Posts: 13
Hi!I am designing a 200W, IMD3< -40dBc amplifier for 30-88MHz application, I am going to using MRF6VP2600 of freescale.The test circuit(225MHz) are as follows:

There are two baluns(T1 and T2) , they are coaxial line transformers, is there anyone known the parameters of these baluns(length and Zo)?
(Baluns are made by Comm Concept, and I have email Comm Concept company, but they didn't reply me)
Since the Comm Concept company didn't reply me, is there any other products I can use to substituted for T1 and T2?
Maybe I have to make it myself, can you give me some reference on how to make a balun like this?







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