[SI-LIST] Re: SMA connector Insertion Loss
- From: Richard Jungert <r_jungert@xxxxxxxxxxx>
- To: <heyfitch@xxxxxxxx>, Scott McMorrow <scott@xxxxxxxxxxxxx>, <mohaghtalab@xxxxxxxxx>, si list freelist <si-list@xxxxxxxxxxxxx>
- Date: Mon, 20 Jul 2009 19:31:42 -0700
Heyfitch.
Here is a typical data sheet for a strait SMA to cable connector. This device
type is very wide band and can work very well up into the high 20ghz range or
higher with the right dielectric etc etc. I have never used them above 23 Ghz.
http://www.carlisleit.com/v2/productFiles/OL_5720-1.pdf
The S-parameters are not part of this data sheet but if your real interested
talk to the MFG and see about getting them. For MIL-C-17 specs. VSWR: 1.15 +
0.01 f(ghz) Insertion loss: .06x sqrt f (ghz). Same equation as what Scott has
posted.
Google Mil-C-17, there is alot of info out there on this spec. If your trying
to build a coaxial cable whats more critical is the type of cable that gets
connected to the SMA connector and how its constructed. The coaxial cable
itself is always the part that limits the useful frequency range in an SMA to
coax to SMA connector.
Richard Jungert
> Date: Mon, 20 Jul 2009 20:11:05 -0500
> Subject: [SI-LIST] Re: SMA connector Insertion Loss
> From: heyfitch@xxxxxxxx
> To: scott@xxxxxxxxxxxxx
> CC: mohaghtalab@xxxxxxxxx; si-list@xxxxxxxxxxxxx
>
> Scott,
> what is the point of giving a frequency dependent expression and saying that
> it is true at just one frequency point? Should one assume that it holds true
> within a certain range around the tested frequency? How wide is the range
> then? Have I missed something here?
> Thank you.
> Vadim
> On Mon, Jul 20, 2009 at 12:55 PM, Scott McMorrow <scott@xxxxxxxxxxxxx>wrote:
>
> > Mo
> >
> > It Depends. Here's a Johnson spec for various types of SMA connectors
> >
> > Insertion Loss: (dB maximum)
> > Straight flexible cable connectors
> > and adapters ...................... 0.06 Sqrt(f )(GHz), tested at 6 GHz
> > Right angle flexible cable
> > connectors ......................... 0.15 Sqrt(f ) (GHz), tested at 6 GHz
> > Straight semi-rigid cable
> > connectors with contact ..... 0.03 Sqrt(f ) (GHz), tested at 10 GHz
> > Right angle semi-rigid cable
> > connectors ......................... 0.05 Sqrt(f )(GHz), tested at 10 GHz
> > Straight semi-rigid cable
> > connectors w/o contact ...... 0.03 Sqrt(f ) (GHz), tested at 16 GHz
> > Straight low loss flexible
> > cable connectors ................ 0.06 Sqrt(f ) (GHz), tested at 1 GHz
> > Right Angle low loss flexible
> > cable connectors ................ 0.15 Sqrt(f ) (GHz), tested at 1 GHz
> >
> > --
> > Scott McMorrow
> > Teraspeed Consulting Group LLC
> > 121 North River Drive
> > Narragansett, RI 02882
> > (401) 284-1827 Business
> > (401) 284-1840 Fax
> >
> > http://www.teraspeed.com
> >
> > Teraspeed® is the registered service mark of
> > Teraspeed Consulting Group LLC
> >
> >
> > Mohamad Haghtalab wrote:
> > > Hi all
> > >
> > > what's the typical value of insertion loss of a typical SMA connector?
> > >
> > > thanks,Regards
> > >
> > >
> > > ------------------------------------------------------------------
> > > 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:
> > > //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:
> > > //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:
> > //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:
> > //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:
> //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:
> //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
>
>
_________________________________________________________________
Windows Live? Hotmail®: Search, add, and share the web?s latest sports videos.
Check it out.
http://www.windowslive.com/Online/Hotmail/Campaign/QuickAdd?ocid=TXT_TAGLM_WL_QA_HM_sports_videos_072009&cat=sports
------------------------------------------------------------------
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:
//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:
//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:
