Use a two later PCB, 3oz copper (105uM) on one side, 1/2oz. on the other (17.5uM).
Top side used for Tx, bottom for Rx (with twice the number of turns for transformer action).
Paint with graphite for screening.
You can calculate all parameters quite reliably using F4 as a layup (resistance, capacitance etc) and get the design right first time.
Qiaozhi, if you or Aziz design it, I will pay to have it made. If I make 100, price will be £38 or thereabouts. Two prototypes will cost £225 each (based on a 350mm diameter coil with a 150mm hole in the middle).
The bulk price for 100 covers the cost of building a commercial design VERY easily as the coil will save 2 hours per hand wound in labour (spend to save) 200 is even cheaper!
Top side used for Tx, bottom for Rx (with twice the number of turns for transformer action).
Paint with graphite for screening.
You can calculate all parameters quite reliably using F4 as a layup (resistance, capacitance etc) and get the design right first time.
Qiaozhi, if you or Aziz design it, I will pay to have it made. If I make 100, price will be £38 or thereabouts. Two prototypes will cost £225 each (based on a 350mm diameter coil with a 150mm hole in the middle).
The bulk price for 100 covers the cost of building a commercial design VERY easily as the coil will save 2 hours per hand wound in labour (spend to save) 200 is even cheaper!
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