http://groklab.org/handhygiene/2009/09/22/angle-of-approach-testing/ Just another Groklab.org weblog Mon, 28 Nov 2011 02:43:21 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://groklab.org/handhygiene/2009/09/22/angle-of-approach-testing/comment-page-1/#comment-21 Ted Herman Tue, 29 Sep 2009 19:22:39 +0000 http://groklab.org/handhygiene/?p=165#comment-21 If there are extreme "lobes" in a transmission pattern, can these lobes be attenuated by some kind of masking? I did measure different RSSI between cases of a mote and the same mote with a bit of antistatic bad (mylar) taped onto the F-antenna. If there are extreme “lobes” in a transmission pattern, can these lobes be attenuated by some kind of masking? I did measure different RSSI between cases of a mote and the same mote with a bit of antistatic bad (mylar) taped onto the F-antenna.

]]> http://groklab.org/handhygiene/2009/09/22/angle-of-approach-testing/comment-page-1/#comment-18 gthomas Mon, 28 Sep 2009 16:05:30 +0000 http://groklab.org/handhygiene/?p=165#comment-18 Good point Ted, and one that's been on my mind a lot last week. We don't have great equipment to test whether these signals are polarized one way or the other or what polarities the motes are good at picking up. There may be orientation effects; they were not varied in this experiment, nor in many that we've been doing. We'll add that to our list. Good point Ted, and one that’s been on my mind a lot last week. We don’t have great equipment to test whether these signals are polarized one way or the other or what polarities the motes are good at picking up. There may be orientation effects; they were not varied in this experiment, nor in many that we’ve been doing. We’ll add that to our list.

]]> http://groklab.org/handhygiene/2009/09/22/angle-of-approach-testing/comment-page-1/#comment-16 Ted Herman Fri, 25 Sep 2009 18:06:19 +0000 http://groklab.org/handhygiene/?p=165#comment-16 Is the angular variation entirely determined by the transmitter, or does the angle of the receiver matter equally? Did you test this in some experiments? Is the angular variation entirely determined by the transmitter, or does the angle of the receiver matter equally? Did you test this in some experiments?

]]>