When we ran these tests I used a separate antenna mast to hold the antenna above the table. Even Styrofoam will affect the measurement. (1- 6GHz you'll need a Styrofoam table)
I used the antenna factor spot frequencies and modified a proprietary Labview program for the OATS but if you have a tracking generator on your OATS receiver you may be able to use it in a similar manner. Above 1GHz even Styrofoam will affect your measurements, used the CISPR 16 Biconical 3183 (needed it for the VSWR measurement anyway) and the 3115 was used as the receive antenna. As there is no need to raise an antenna mast a modified Cable Calibration routine in Labview again did the job. Rich On Sun, Sep 20, 2015 at 7:14 PM, Grace Lin <[email protected]> wrote: > Dear Members, > > I wonder if I could have your help with table evaluation. > > It seems three frequency ranges have to be conducted: 200 MHz - 1 GHz, 1 > GHz - 6 GHz, and 6 GHz - 18 GHz. > > Here are my questions: > > 1. With the table present, how to keep the transmit antenna 0.1 m above > the table? Does a piece of 0.1m Styrofoam work? > > 2. How to determine the frequency step? "During measurement, frequency > steps shall be less than or equal to 0.5 % of the highest frequency used." > For the frequency range of 200 MHz - 1 GHz, does the frequency step be less > than or equal to 1 GHz x 0.5%? > > 3. Equations 17-19 look straight forward. However, it will take some time > to collect data manually. Does anyone have experience using a software to > achieve the task? > > Thank you very much for your time and I look forward to hearing from you. > > Best regards, > Grace Lin > > - > ---------------------------------------------------------------- > > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to < > [email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in > well-used formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) <http://www.ieee-pses.org/list.html> > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <[email protected]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher <[email protected]> > David Heald <[email protected]> > - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
