RE: Microwave Cables

2000-05-12 Thread Bandele Adepoju
Try a Helix cable.  This is a high frequency, low
loss cable suitable for taking measurements in the
frequency range that you mentioned.

For cable specs contact Mr. John Royer in Phoenix,
Arizona, at 410-987-9713. 

Regards,

Bandele 
Jetstream Communications, Inc.
badep...@jetstream.com


-Original Message-
From: umbdenst...@sensormatic.com [mailto:umbdenst...@sensormatic.com]
Sent: Monday, May 08, 2000 2:23 PM
To: emc-p...@ieee.org
Subject: Microwave Cables





Friends,

We have been performing EMC measurements below 1 GHz.  Now we need
to do measurements for 2.5 GHz systems to the 10th harmonic (25 GHz).

What kind of coax (or other cable) have you found suitable for
testing this frequency range on an OATS?  Type and vendor would be
appreciated.  Also, a brief description, such as flexible, rigid, diameter,
loss characteristics, typical connector system, etc would help.

Any cable (or measurement) tips would be appreciated.

Thanks,

Don Umbdenstock
Sensormatic

---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.

To cancel your subscription, send mail to:
 majord...@ieee.org
with the single line:
 unsubscribe emc-pstc

For help, send mail to the list administrators:
 Jim Bacher:  jim_bac...@mail.monarch.com
 Michael Garretson:pstc_ad...@garretson.org

For policy questions, send mail to:
 Richard Nute:   ri...@ieee.org




XMTR-TsT.RTF
Description: RTF file


Re: Microwave Cables

2000-05-11 Thread Hans Mellberg


--- umbdenst...@sensormatic.com wrote:
 
 
 
   Friends,
 
   We have been performing EMC measurements below 1
 GHz.  Now we need
 to do measurements for 2.5 GHz systems to the 10th
 harmonic (25 GHz).
 
   What kind of coax (or other cable) have you found
 suitable for
 testing this frequency range on an OATS?  Type and
 vendor would be
 appreciated.  Also, a brief description, such as
 flexible, rigid, diameter,
 loss characteristics, typical connector system, etc
 would help.
 
   Any cable (or measurement) tips would be
 appreciated.
 
   Thanks,
 
   Don Umbdenstock
   Sensormatic
 
I have used Andrews 1/4 superflex as it is rated to
20GHz with low loss. It is not exactly flexible and
more suited for permanent instalations. If you do not
have to go to 25GHz then you can use their 3/8 or
1/2 for even lower loss (and less flexibility) but
the high frequency performance begins to deteriorate.

That particular type of coax is corugated and uses
closed cell dielectric material to minimize
hygroscopic affinity.

Another vendor of low loss coax cables is a German
manufacturer Rosenberger



=
Best Regards
Hans Mellberg
EMC Consultant

__
Do You Yahoo!?
Send instant messages  get email alerts with Yahoo! Messenger.
http://im.yahoo.com/

---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.

To cancel your subscription, send mail to:
 majord...@ieee.org
with the single line:
 unsubscribe emc-pstc

For help, send mail to the list administrators:
 Jim Bacher:  jim_bac...@mail.monarch.com
 Michael Garretson:pstc_ad...@garretson.org

For policy questions, send mail to:
 Richard Nute:   ri...@ieee.org



Microwave Cables

2000-05-08 Thread UMBDENSTOCK



Friends,

We have been performing EMC measurements below 1 GHz.  Now we need
to do measurements for 2.5 GHz systems to the 10th harmonic (25 GHz).

What kind of coax (or other cable) have you found suitable for
testing this frequency range on an OATS?  Type and vendor would be
appreciated.  Also, a brief description, such as flexible, rigid, diameter,
loss characteristics, typical connector system, etc would help.

Any cable (or measurement) tips would be appreciated.

Thanks,

Don Umbdenstock
Sensormatic

---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.

To cancel your subscription, send mail to:
 majord...@ieee.org
with the single line:
 unsubscribe emc-pstc

For help, send mail to the list administrators:
 Jim Bacher:  jim_bac...@mail.monarch.com
 Michael Garretson:pstc_ad...@garretson.org

For policy questions, send mail to:
 Richard Nute:   ri...@ieee.org