Greetings, May I suggest that you contact Vladan Temer of Sonoma Instrument, Tel. 707- 542-8569; FAX 707-542-1551? Excellent equipment. Bogdan.
Knighten, Jim L wrote: > John, > > Another option to consider is the HP 8449B PreAmplifier. It may have higher > noise floor than Ed's suggestion below, although at 3 meters it may be > sufficient, depending on antenna factors. It is a catalog item. > > An interesting option that I saw a couple of weeks ago in Seattle at the > IEEE EMC Symposium is the HP 84125A Microwave EMI Measurement System (don't > know the price). This unit spans 1-18 GHz. The sales literature indicates > a sensitivity of 10-20 dB below the FCC limit in this frequency range > (assuming a horn antenna and "typical" spectrum analyzer transducer factors > (something like the HP 8593EM). If you investigate this option, please let > me know what you find. > > Jim > ________________________________________________________ > Dr. Jim Knighten e-mail: [email protected] > <mailto:[email protected]> > Senior Consulting Engineer > NCR > 17095 Via del Campo > San Diego, CA 92127 http://www.ncr.com <http://www.ncr.com> > Tel: 858-485-2537 > Fax: 858-485-3788 > > ***** Notice the Area Code change from 619 ***** > > -----Original Message----- > From: Price, Ed [mailto:[email protected]] > Sent: Wednesday, August 25, 1999 3:41 PM > To: 'John Cronin'; [email protected] > Subject: RE: Amplifier for measurements above 1GHz > > John: > > So you need another 10dB of gain between 1 & 5 GHz. I have > used Miteq > low-noise preamps in the past, but I bought octave-band > models and I paid a > lot extra for absolute lowest noise figure with about 35dB > of gain. I > suggest you call Miteq (get the noise figure of your > spectrum analyzer > first) and see what combinations they recommend. You might > need only a 1dB > noise figure, with about 20dB of gain, which may mean they > have one unit > that can span the frequency range. > > Site at: http://www.miteq.com > > > :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-) > Ed Price > [email protected] > Electromagnetic Compatibility Lab > Cubic Defense Systems > San Diego, CA. USA > 619-505-2780 (Voice) > 619-505-1502 (Fax) > Military & Avionics EMC Services Is Our Specialty > Shake-Bake-Shock - Metrology - Reliability Analysis > > :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-) > > > -----Original Message----- > > From: John Cronin [SMTP:[email protected]] > > Sent: Wednesday, August 25, 1999 2:50 PM > > To: [email protected] > > Subject: Amplifier for measurements above 1GHz > > > > > > I am hoping to purchase a 1 to 5 Ghz amplifier to be used > in conjunction > > with a spectrum analyzer to measure emissions at 3m to FCC > requirements. > > With a 1 MHz bandwidth into a HP microwave analyzer we can > only currently > > measure at 1m. > > > > Can we get away with measurements at 1m? > > > > Can anyone recommend a low cost microwave amplifier that > is suitable for > > the > > task? > > > > Thanks in anticipation of your response. > > > > > > John Cronin > > > > > > ______________________________________________________ > > Get Your Private, Free Email at http://www.hotmail.com > > > > --------- > > 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). --------- 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).
