Don, I worked in an EMC lab some years ago and we used a Milmega 1-2GHz 55W amplifier. Check out www.milmega.com
There were no problems and that why we never managed to verify the customers service.... At that time we used a field probe from AR and the feedback procedure. We never tried to make a calibrated field as we had up to 1GHz. Why, because at that time there was not a requirement. I can't say today if the amplifier power was sufficient to make the calibrated field of 10V/m. Best regards Amund Westin On Tue, 18 Sep 2001 15:11:31 -0400 umbdenst...@sensormatic.com wrote: > >Great input, Ken. Thanks for your help. > >Best regards, > >Don > >> ---------- >> From: Ken Javor[SMTP:ken.ja...@emccompliance.com] >> Sent: Tuesday, September 18, 2001 11:33 AM >> To: umbdenst...@sensormatic.com; emc-p...@majordomo.ieee.org >> Subject: Re: 2 GHz Amplifiers >> >> Twenty years go microwave amps of 1 W or more power output were all TWTAs. >> Nowadays a 10 W amp or less from 1 - 2 GHz could be solid-state. I have >> no >> experience with those personally. Do you still have to illuminate that >> 1.5 >> m square above 1 GHz? Then you would need a very powerful amplifier like >> you use below 1 GHz, and that would likely be a TWTA.* Then the question >> becomes whose TWT and how good is the power supply and protection >> circuitry. >> If you are buying a TWTA from any of the vendors you listed, it might be >> worth checking this out, especially if they are private labeling another >> company's amps. At one time, not that long ago, NONE of these companies >> sold amps operating above 1 GHz. >> >> *There is no technical justification for illuminating a 1.5 m square in >> the >> microwave bands. The decision ought to be based on economics. If you can >> illuminate the entire quiet zone, then the test is more quickly >> accomplished. If you can only illuminate a 1 foot square, then you have >> to >> scan the entire set up and the test takes longer, but you get by with a >> less >> expensive more reliable amplifier... >> >> ---------- >> >From: umbdenst...@sensormatic.com >> >To: emc-p...@majordomo.ieee.org >> >Subject: 2 GHz Amplifiers >> >Date: Tue, Sep 18, 2001, 7:43 AM >> > >> >> > >> > Hello Friends, >> > >> > In searching for the best value for power amplifiers for the 2 GHz >> radiated >> > immunity limit. I have come across a few vendors that I am not >> personally >> > familiar with. I have used Amplifier Research and Schaffner/Chase >> products >> > at other frequencies and have been satisfied with the products' >> performance >> > and reliability. I have found additional vendors listed below and was >> > wondering if anyone had any experience with them (performance, >> reliability, >> > customer service, warranty, etc). >> > >> > AFI >> > Comtech PST >> > IFI >> > Kalmus >> > >> > >> > Comments appreciated. >> > >> > Best regards, >> > >> > Don Umbdenstock >> > Sensormatic >> > >> > ------------------------------------------- >> > 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: >> > majord...@ieee.org >> > with the single line: >> > unsubscribe emc-pstc >> > >> > For help, send mail to the list administrators: >> > Michael Garretson: pstc_ad...@garretson.org >> > Dave Heald davehe...@mediaone.net >> > >> > For policy questions, send mail to: >> > Richard Nute: ri...@ieee.org >> > Jim Bacher: j.bac...@ieee.org >> > >> > All emc-pstc postings are archived and searchable on the web at: >> > No longer online until our new server is brought online and the old >> > messages are imported into the new server. >> > >> > >------------------------------------------- >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: > majord...@ieee.org >with the single line: > unsubscribe emc-pstc > >For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > Dave Heald davehe...@mediaone.net > >For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > >All emc-pstc postings are archived and searchable on the web at: > No longer online until our new server is brought online and the old messages are imported into the new server. > -- Get your firstname@lastname email for FREE at http://Nameplanet.com/?su ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
