Great input, Ken. Thanks for your help. Best regards,
Don > ---------- > From: Ken Javor[SMTP:[email protected]] > Sent: Tuesday, September 18, 2001 11:33 AM > To: [email protected]; [email protected] > 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: [email protected] > >To: [email protected] > >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: > > [email protected] > > with the single line: > > unsubscribe emc-pstc > > > > For help, send mail to the list administrators: > > Michael Garretson: [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: > > 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [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: No longer online until our new server is brought online and the old messages are imported into the new server.
