Richard: My quick answer to your question is no. You ought to end up with the rated 0.2 dB insertion loss, or pretty close to it.
I presume that the insertion loss was measured in a 50 ohm system (could also be 75 ohm or whatever) as the difference in power at a matched load with and without the device inserted. The effect of device mismatch will have been included in the measured insertion loss. The mismatch of the device could cause additional attenuation in lossy connecting cables, or introduce some uncertaintly to your measurements, depending on what they are. I bet you get some different answers as well. This is one of those topics that induces n! opinions. Jack Jacob Z. Schanker, P.E. 65 Crandon Way Rochester, NY 14618 Phone: 585 442 3909 Fax: 585 442 2182 [email protected] ----- Original Message ----- From: <[email protected]> To: <[email protected]> Sent: Wednesday, May 22, 2002 9:22 AM Subject: RF Loss Question | | I am adding a RF device into my transmission path, and the device has a VSWR | of 1.2 and an insertion loss of 0.2. Will I end up with a total loss of 0.6 | dB due to a loss of 0.4 dB due to the VSWR plus the 0.2 dB insertion loss? | | Richard Woods | Sensormatic Electronics | Tyco International | | | ------------------------------------------- | This message is from the IEEE EMC Society Product Safety | Technical Committee emc-pstc discussion list. | | Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ | | To cancel your subscription, send mail to: | [email protected] | with the single line: | unsubscribe emc-pstc | | For help, send mail to the list administrators: | Ron Pickard: [email protected] | Dave Heald: [email protected] | | For policy questions, send mail to: | Richard Nute: [email protected] | Jim Bacher: [email protected] | | All emc-pstc postings are archived and searchable on the web at: | http://ieeepstc.mindcruiser.com/ | Click on "browse" and then "emc-pstc mailing list" | | ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
