I have electrodes to be tested their characteristics Here is a picture of them, https://picasaweb.google.com/lh/photo/UY9fJGfk2iayEBafvniVbg?feat=directlink
And I connected them to USRPs via SMA-SMA cable https://picasaweb.google.com/lh/photo/0wJ84tU_Y0veX6svcWBeMw?feat=directlink However, there is a problem! I want to know characteristics of just CIRCLE part, except a rod part. In my experience, this rod part acts as an antenna! Thus, I cannot figure out exactly So, I make a shield around the rod part. This shield is made with Aluminum foil which is used for cooking. https://picasaweb.google.com/lh/photo/kMx24c0PLaQdhfo2-t00MQ?feat=directlink And I expect that the rod part rarely sense electromagnetic wave and thus only the circle part can receive a signal The result is like this: Result without SHIELDING https://picasaweb.google.com/lh/photo/JBWG6A0NzhbLgcto44_B0w?feat=directlink Result with SHIELDING https://picasaweb.google.com/lh/photo/H9RItzjpfemHy-OR2eQhQg?feat=directlink That's very weird. As my knowledge, if there is SHIELDING, the sensitivity of an antenna should get worse. But, in my experiment, this SHIELDING helps communication! I have any idea of it. I got confused Did I make shielding wrong?
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
