Brian As you know, the operation frequency of Microwave-oven uses same ISM band including 2.45GHz by which "Magnetron", main component of microwave oven is oscillated. It means, even though you use another new one, a little EMI will happen between Microwave oven and Wireless LAN. Best way is to reduce the use time of microwave-oven or remove it from LAN areas or isolate it >from areas by perfect shielding around microwave-oven. But these ways are not realistic or expensive.
Instead of this, you can reduce the interference by general EMI noise reduction techniques. Basically, Microwave has a resonance space to heat food and Magnetron as source. You have to consider these things for microwave itself. 1. Impedance matching (filtering) between source (Magnetron) and resonance space. 2. Shielding effectiveness for preventing from emission at heating space (e.g. door screening, edge gap) 3. Radiation control through conducted power lines (conducted filter) To reduce your time, itll be better way to buy a new one considering the above things; it means new one must be compliant to CISPR 11. Best regards, Hocheol Kwak The Clemson Vehicular Electronics Laboratory, Department of Electrical & Computer Engineering, Clemson University, Clemson, SC, 29634-0915, Office: +1-864-656-7202 Homepage: http://people.clemson.edu/~hkwak CVEL site: http://www.cvel.clemson.edu/ Kunde, Brian wrote: > I have just received and interesting call from our IT guys in our > production facility. They have installed a 2.4Ghz wireless LAN system in > our production and stock room areas, which is a huge area, and which > includes 13 Access Points and a couple dozen wireless devices such as > bar code readers, computers, and printers. > > They discovered that they are having a major interference problem which > they have narrowed down to the Microwave Ovens in the two break areas. > Evidently, Microwave Ovens run at 2.45Ghz. > > It would be very difficult to remove the ovens or to move the break > areas. > > Have any of you experts have experience with this issue? Any > suggestions? Are new ovens better then older ones? Are the microwave > ovens that run at a different frequency? Would it help to try and shield > the ovens better? Please help. > > The Other Brian > > > > LECO Corporation Notice: This communication may contain confidential > information intended for the named recipient(s) only. If you received this > by mistake, please destroy it and notify us of the error. Thank you. > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. Website: http://www.ieee-pses.org/ > > To post a message to the list, send your e-mail to [email protected] > > Instructions: http://listserv.ieee.org/request/user-guide.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] > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieeecommunities.org/emc-pstc > - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
