[SI-LIST] Re: Fw: RE: low loss & smallest size flexible Co-axial Cable

You will find that there is no 'magic' small low loss cable. Most of the
loss (below several GHz) is due to the resistance of the inner conductor.
Since small coax has a small inner conductor the losses are higher. The best
that can be done is to use foamed telfon inner insulation to lower the
effective Er which therefore leads to a larger innner conductor.
   Dave Cuthbert

On Wed, Jun 24, 2009 at 6:14 PM, padma gundala <pgundala2001@xxxxxxxxx>wrote:

>
> --- On Wed, 6/24/09, padma gundala <pgundala2001@xxxxxxxxx> wrote:
>
>
> From: padma gundala <pgundala2001@xxxxxxxxx>
> Subject: RE: [SI-LIST] low loss & smallest size flexible Co-axial Cable
> To: "Tori Meek" <tori.meek@xxxxxxxxxx>
> Date: Wednesday, June 24, 2009, 5:12 PM
>
>
>
>
>
>
>
> Tori,
>
> How does this compare to the .81 cable of samtec attached, in terms of the
> 3db loss?
> This is what we used earlier to perform signal integrity tests initially.
> We use one end of the cable to solder to PCB.
> Since it is really small , very flexible connecting to the sma does not
> cause solder to break off.
> Also the photos of the cable you have suggested looks very wide like a
> ribbon.
>
> Thanks,
> Pam
>
> --- On Wed, 6/24/09, Tori Meek <tori.meek@xxxxxxxxxx> wrote:
>
>
> From: Tori Meek <tori.meek@xxxxxxxxxx>
> Subject: RE: [SI-LIST] low loss & smallest size flexible Co-axial Cable
> To: pgundala2001@xxxxxxxxx
> Date: Wednesday, June 24, 2009, 1:48 PM
>
>
>
>
>
>
>
>
> Pam,
>
> Check out our RF25M series:
> http://samtec.com/technical_specifications/overview.aspx?series=rf25m .
>  It?s a low loss cable that has an outside diameter of 1.9mm compared to the
> RG316 diameter of 2.53mm.  We offer both the SMA plug and bulkhead jack as
> terminations.
>
> If you think this will work, configure a part number from the prints at the
> above link and I can get you some samples.
>
> Thanks,
> Tori Meek
> Samtec Inc
> Signal Integrity Group
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of pgundala2001@xxxxxxxxx
> Sent: Wednesday, June 24, 2009 3:38 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] low loss & smallest size flexible Co-axial Cable
>
>  Hi ,
>
> Can any recommend a co-axial cable that has low losses like the RG 316\(100
> ohms diff. impedance) , yet the size of overall dia. needs to be min. (very
> flexible) with sma connector connected.
> Samtec's MH081 cable with sma connector is good except the attenuation db/m
> is almost double of the RG316.
>
> Thanks,
>
> Pam
>
>
>
>
> ------------------------------------------------------------------
> To unsubscribe from si-list:
> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
> or to administer your membership from a web page, go to:
> http://www.freelists.org/webpage/si-list
>
> For help:
> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>
> List technical documents are available at:
>                 http://www.si-list.net
>
> List archives are viewable at:
>             http://www.freelists.org/archives/si-list
> or at our remote archives:
>             http://groups.yahoo.com/group/si-list/messages
> Old (prior to June 6, 2001) list archives are viewable at:
>             http://www.qsl.net/wb6tpu
>
>
>
>
>
>
>
> ------------------------------------------------------------------
> To unsubscribe from si-list:
> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
> or to administer your membership from a web page, go to:
> http://www.freelists.org/webpage/si-list
>
> For help:
> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>
> List technical documents are available at:
>                http://www.si-list.net
>
> List archives are viewable at:
>                http://www.freelists.org/archives/si-list
> or at our remote archives:
>                http://groups.yahoo.com/group/si-list/messages
> Old (prior to June 6, 2001) list archives are viewable at:
>                http://www.qsl.net/wb6tpu
>
>
>

------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field


List technical documents are available at:
                http://www.si-list.net

List archives are viewable at:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu

Other related posts: