Yes, modeling this can get real messy. Eventually we are in the far-field. I'm concerned with the radiated energy from millions of these devices propagating via the ionosphere and raising noise levels everywhere, including outside of our national boarders. Dave Cuthbert Micron Technology
From: [email protected] [mailto:[email protected]]On Behalf Of Price, Ed Sent: Monday, December 15, 2003 12:16 PM To: [email protected] Subject: RE: E-field drop off with distance (1-30MHz) From: [email protected] [mailto:[email protected]] Sent: Monday, December 15, 2003 9:07 AM To: [email protected]; [email protected] Subject: RE: E-field drop off with distance (1-30MHz) lain, this can be calculated (I can send you the formulas) or simulated with NEC. If you give me dimensions of a "typical" house wiring antenna I can run some simulations and see how the e-field goes. As far as a real test, you can drive some RF into an AC socket and take field strength measurements. One way or the other, when you are >1/2 wavelength from the building you will be in the 1/r region. That is, unless you are near the power feed to the house, or you are near the driveway lights, or you are near the cable TV coax lines, or..... Ed Ed Price [email protected] WB6WSN NARTE Certified EMC Engineer & Technician Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Is Our Specialty
