Visit RFCafe.com Thanks for visiting RFCafe.net Thanks for visiting the RF Cafe Archives Thank you for visiting RF Cafe Thank you for visiting the RF Cafe Archives!

Balun operation - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues - primarily having to spend time purging garbage posts from the board. At some point I might start the RF Cafe Forums again if the phpBB software gets better at filtering spam.

Below are the old forum threads, including responses to the original posts.

-- Amateur Radio
-- Anecdotes, Gripes & Humor
-- Antennas
-- CAE, CAD, & Software
-- Circuits & Components
-- Employment & Interviews
-- Miscellany
-- Swap Shop
-- Systems
-- Test & Measurement
-- Webmaster

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

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?


 
   
 
fred47
 Post subject: Baluns
Posted: Mon Mar 27, 2006 9:18 pm 
 
General
User avatar

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

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!
Fred


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

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


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

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




Posted  11/12/2012