Grumpy_Mike,
Thanks for the response. I read up on envelope detector circuits, so I'm somewhat familiar with their operation. Is there any way for you predict how much of an impact such a circuit could have on read range? Or is that something that I can only find out through actual testing?
On a separate note, I originally decided to go down the path of using a transformer because I was under the impression that I was already operating under maximum current draw from the EM4095. This impression was based on my estimation that the intrinsic resistance of the coils I'm using is roughly 20 ohms. However, I just tested the resistance using an LCR meter. One thing I'm confused about is that I can select a test frequency for resistance...I thought resistance was a dc characteristic. If the frequency does indeed effect intrinsic resistance, then the reading I got at 100 kHz of 60 ohms would indicate that I'm currently operating at 1/3 the max operating current of the EM4095..
Sorry for being all over the place; I'm just exploring all options that could lead to a solution.
Thanks again for all of the help.