[SI-LIST] Re: Two requests
- From: ray_waugh@xxxxxxxxxxx
- To: si-list@xxxxxxxxxxxxx
- Date: Wed, 19 Mar 2003 14:36:03 -0700
Dan...
Be careful - CATV covers a very broad bandwidth, far more than a Wilkenson
divider can handle. He'll either have to live with the lousy isolation of the
resistive divider or, as you say, use a wideband design based upon ferrite
cores.
Ray
Agilent Technologies
-----Original Message-----
From: Swanson, Dan [mailto:Dan_Swanson@xxxxxxxxxxxx]
Sent: Wednesday, March 19, 2003 11:16 AM
To: 'doug@xxxxxxxxxx'; si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Two requests
Re: #2
What you probably saw in the Radio Shack unit
was three, 25 ohm resistors joined at common junction.
1) Insertion loss is 6dB, not 3dB
2) Isolation is only 6dB
One way to do a true 3 dB splitter at
VHF/UHF is with a "magic tee" or
auto-transformer. But you need ferrite
cores to do it. There might be some
info from Fair-Rite Products Corp.
You can also do a lumped element
approximation of a Wilkinson divider.
Replace the quarter wave sections with
their lumped equivalent.
Dan
Dan Swanson EMAIL: d.swanson@xxxxxxxx
Forem USA PHONE: 978-834-4085
37 South Hunt Road FAX: 978-388-7077
Amesbury, MA 01913
> -----Original Message-----
> From: Doug Brooks [mailto:doug@xxxxxxxxxx]
> Sent: Wednesday, March 19, 2003 1:52 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Two requests
>
>
>
> Hi all,
>
> This is certainly a "less-than-challenging" pair of questions
> for our list,
> but I know many of you can answer anything!
>
> 1. If a single signal bus is spelled "bus", what is the
> plural? Buses, or
> busses?
>
> 2. Can someone direct me to a web page with a schematic of a
> well designed
> cable TV signal splitter. I've taken a Radio Shack one apart,
> and there
> HAVE to be better designs! I'm curious what a good one looks like.
>
> Thanks for the off-topic help
>
> Doug Brooks
>
>
>
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