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That doesn't work that way. If you sum the signals from two antennas, those signals would differ in phase depending on the direction of the incoming wave. For s
by pkolaczk 4y ago
That doesn't work that way. If you sum the signals from two antennas, those signals would differ in phase depending on the direction of the incoming wave. For some directions they will add up, for others they will cancel out. That would change the directionality of such antenna system, which is exactly what I have written above - you gain somewhere, but lose elsewhere. Antenna gain is a function of only its directionality. A theoretical, ideally symmetric antenna has gain 0 dBi, regardless of its size.
- amelius 4y agoIf the antennas cancel, you change the polarity of one of the antennas and then they add up.
- pkolaczk 4y agoBut then it is no longer a passive element. Sure, you can use N antennas connected to some electronics that adjust the phases dynamically so they always add up. This is what modern "beam-forming" wifi routers do these days to improve range.