Copyright: 1996 - 2024
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
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design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
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Single ended to differntial LPF - RF Cafe Forums
RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media
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but until then it is probably not worth the effort. Regardless, there are still
lots of great posts in the archive that ware worth looking at.
Below are the old forum threads, including responses to the original posts.
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Post subject: Single ended to differntial LPF Posted: Wed
Aug 19, 2009 3:02 pm
Joined: Tue Sep 04,
2007 7:54 am
I have calculated
the values for a 230 Mhz LPF for single ended configuration with source
and load impedance of 100 ohms. I want o convert this filter to differential.
How to convert the L and C values from single ended to differential?
Single ended filter values (5 pole butterworth)
Post subject: Re: Single ended to differntial LPFPosted: Mon Sep
21, 2009 10:41 pm
Joined: Sat Mar 04, 2006 10:12
I swear I don't work for them, but I just did a Google
Search and found this program that does the job.
Maybe you can downlaod a trial version?
Post subject: Re: Single ended to differntial LPFPosted:
Wed Oct 07, 2009 6:05 pm
Joined: Sun Oct 04,
2009 5:17 pm
The 4 series inductors (2 for each branch
of the differential filter) value will be equal to the single ended
value divided by 2. In your case
L1a = 15 nH
L1b = 15 nH
= 8 nH
L2b = 8 nH
Capacitors, instead, will keep their original
C1 = 29 pF
C2 = 27 pF
C3 = 6 pF