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Balun operation - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Please visit the new and improved RF Cafe Forums that were created in September of 2015. Unlike with the old forums where users registered individually, the new forums use a common User Name and Password so anyone can post without needing to create an account. Please find the current User Name and Password on the RF Cafe homepage. Thanks for your participation.

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 Post subject: Balun operation
Posted: Thu Mar 23, 2006 5:54 am 

Joined: Wed Mar 22, 2006 7:00 am
Posts: 3
I'm trying to understand how Balun works...

I know it converts a unbalanced signal to 2 balanced signal...

Also, I wondering if a Balun's operating frequency is from 800MHz to 1GHz... Will there be attenuation outside the operating frequency?

 Post subject: Baluns
Posted: Mon Mar 27, 2006 9:18 pm 
User avatar

Joined: Wed Feb 22, 2006 3:51 pm
Posts: 121

First, a gentle reminder - this thread is "Anecdotes & Gripes" - you might do better posting this on the "Circuits" or "Antennas" threads...

Second, a balun converts a signal from unbalanced (2 wires, one "ground", the other "signal") to balanced (AGAIN, 2 wires - not 2 signals, as a general rule), usually not referenced to "ground". (Ground is often no more than a convenient fiction at UHF and microwave frequencies, anyway (Grin!)

Baluns are implemented in a variety of technologies, some more frequency-sensitive than others. So you can find both narrow-band and wide-band balun designs. (For the latter, see Jerry Sevick's book "Transmission Line Transformers).

Good Luck!

 Post subject:
Posted: Thu Mar 30, 2006 3:25 am 

Joined: Wed Mar 22, 2006 7:00 am
Posts: 3
Oopppsss... (Blush...)

 Post subject:
Posted: Thu Mar 30, 2006 3:26 am 

Joined: Wed Mar 22, 2006 7:00 am
Posts: 3
And Thanks Fred...

Posted  11/12/2012