In what orientations do antennas cancel each other out?
In what orientations do antennas cancel each other out?
(OP)
Hi everyone.
I am curious to know more about antenna orientation. For example. I had an RFID reader hooked up with two antennas. One antenna was horizontal on the side of a doorway. The second antenna was attached above the door pointing down. I noticed when I was trying to read a tag, the top antenna could read it even though i was holding the tag closer to the antenna on the side of the doorway. Does this make sense? How can I figure this out? It doesn't make sense. I want to learn more about antenna configuration and how to maximize the antenna wave propogation efficiency.
Thanks guys
I am curious to know more about antenna orientation. For example. I had an RFID reader hooked up with two antennas. One antenna was horizontal on the side of a doorway. The second antenna was attached above the door pointing down. I noticed when I was trying to read a tag, the top antenna could read it even though i was holding the tag closer to the antenna on the side of the doorway. Does this make sense? How can I figure this out? It doesn't make sense. I want to learn more about antenna configuration and how to maximize the antenna wave propogation efficiency.
Thanks guys





RE: In what orientations do antennas cancel each other out?
Try swapping the two antenna connections on the Reader (I'm assuming that they're interchangable). See if the preference follows the antenna, or the Reader's port.
RE: In what orientations do antennas cancel each other out?
RE: In what orientations do antennas cancel each other out?
RE: In what orientations do antennas cancel each other out?
RE: In what orientations do antennas cancel each other out?
Obviously this doesn't apply to all types of antennas/feeds; some may provide higher cross polarization isolation.