-exray- wrote:

Tim Shoppa wrote:

[Hand capacitance detuning receiver]
double-sided PCB with the two sides
not electrically connected?



My gut feeling is that hand capacitance (maybe tens of pF) is small
compared to the capacitance between the two layers of PCB (hundreds of
pF) and that the shielding effect would be negligible.


Thanks for the reply. Here's the logic that is making me ponder this.
The capacitance of the PCB would be in 'series' with the hand
capacitance resulting in a lower overall capacitance.

If I plug in numbers like 200pf for the board and 20pf for the hand I
see that the numerical improvement is minimal but I wonder if it can be
expected to work that way?

-Bill

Yes, but there's always an outside chance that it'll do some good.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com