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Wireless Charger TX : Efficiency

Question asked by Devin Park on Mar 11, 2018
Latest reply on Mar 20, 2018 by Devin Park


I want to know how the efficiency varies depending on the antenna misalignment.


WCT-15WTXAUTO has 3coil and its manual descries its efficiency as roughly >70%.

The efficiency varies depending on the gap(bwt TX & RX, assumed these antennas are well aligned)

Regarding the gap, the efficiency  looks proportional to (antenna diameter)/(vertical gap).


BTW I want to use only 1coil and want to know its efficiency depending on the misalignment ( this is, horizontal difference btw the center of TX/RX antennas not vertical gap)

We want to get  efficiency of 70%.

For this, how much misalignment is allowed?


Thanks and BR,