Ken, I get away with 50 to 75 watts from about 150 MHz to 1 GHz: using amplifier research Amps and the EMCO 3142 antenna. To get the extra field reliably below this takes about 200 watts. OR, if the sample is small enough, I make up as strip line, and 100 watts is more than enough down to really low...
As for rental, there are several companies on the west coast that rent just about anything: but mention EMC testing and the cost will double;-) Derek Walton Owner L. F. Research EMC Design and Test Facility 12790 Route 76, Poplar Grove, IL 61065. www.lfresearch.com Ken Javor wrote: > You will need 100 Watts or more below 1 GHz. Usual purveyors are IFI and > Amplifier Research, but I don't know where to rent them. Above 1 GHz it > gets more complicated. If you must maintain the 1.5 m square quiet zone of > iec 1000-4-3, you will continue to need 100 W amplifiers and it will get > quite expensive, since these amps or only good for octave or double octave > bands. If you get some relief, to where your quiet zone radius is related > to the wavelength, then power source requirements drop with increasing > frequency and eventually you can run from a signal generator output. There > is a company which services the old Hughes TWTAs (no longer manufactured) > from which you may be able to rent. If no one else comes up with useful > sources, I will try to find out who they are. BTW, TWTA = traveling wave > tube amplifier. This technology is fairly common above 1 GHz, although > solid state devices are slowly catching up. > > ---------- > >From: [email protected] > >To: [email protected] > >Subject: Power Amps for Immunity Testing > >Date: Fri, Nov 19, 1999, 8:59 AM > > > > > > > > > > > List-friends, > > > > I am trying to perform some in-house immunity troubleshooting, and I want to > > generate 10V/m fields up to several GHz. What power amps would you > > recommend, > > and does anyone know of a good source to rent them? > > > > Dana J. Bergey > > W. L. Gore & Associates, Inc. > > [email protected] > > > > > > > > --------- > > This message is coming from the emc-pstc discussion list. > > To cancel your subscription, send mail to [email protected] > > with the single line: "unsubscribe emc-pstc" (without the > > quotes). For help, send mail to [email protected], > > [email protected], [email protected], or > > [email protected] (the list administrators). > > > > > > --------- > This message is coming from the emc-pstc discussion list. > To cancel your subscription, send mail to [email protected] > with the single line: "unsubscribe emc-pstc" (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
