Enhanced magnetic field communication system

1. A method for transmitting and receiving signals using an antenna element electrically connected to a driver and an amplifier, the method comprising:

transmitting a first signal from the antenna element, including:

driving the first signal through the antenna element using the driver; and

monitoring the first signal through an input impedance of the amplifier; and

receiving a second signal that was induced in the antenna element, including:

reducing the input impedance of the amplifier to a reduced input impedance; and

receiving the second signal at the amplifier through the reduced input impedance.

2. The method of claim 1 , wherein reducing the input impedance of the amplifier includes modifying a gain of the amplifier.

3. The method of claim 1 , wherein reducing the input impedance of the amplifier includes modifying a band-pass response of the antenna element.

4. The method of claim 1 , wherein reducing the input impedance includes actuating a shunt across a portion of the input impedance to reduce the input impedance.

5. The method of claim 1 , further comprising shielding the antenna element from electric fields such that the second signal induced in the antenna circuit is primarily attributed to magnetic field coupling.

6. The method of claim 5 , wherein shielding the antenna element includes at least partially enclosing a first coil portion, a second coil portion and a capacitor connected in series between the first and second coil portions.

7. The method of claim 5 , wherein the amplifier includes a differential amplifier, the method further comprising:

spreading a surface charge attributed to electric fields across the antenna element; and

rejecting a common mode voltage attributed to the surface charge using the differential amplifier.

8. A communication circuit to receive and transmit signals, comprising:

a driver, and amplifier and an antenna element electrically connected to the driver and the amplifier;

means for transmitting a first signal from the antenna element, including:

means for driving the first signal through the antenna element using the driver; and

means for monitoring the first signal through an input impedance of the amplifier; and

means for receiving a second signal that was induced in the antenna element, including:

means for reducing the input impedance of the amplifier with respect to the input impedance used to monitor the first signal, wherein the input impedance is reduced to a reduced input impedance; and

means for receiving the second signal at the amplifier through the reduced input impedance.

9. The communication circuit of claim 8 , wherein means for reducing the input impedance of the amplifier includes means for switching a shunt transistor.

10. The communication circuit of claim 8 , further comprising means for shielding the antenna element from electric fields such that the second signal induced in the antenna circuit is primarily attributed to magnetic field coupling.

11. The communication circuit of claim 10 , wherein the means for shielding the antenna element from electric fields includes:

means for distributing electrostatic surface charges to balance a noise signal at a first terminal and a second terminal of the antenna element; and

means for rejecting the noise signal at the first terminal and the second terminal as common mode noise.

12. The communication circuit of claim 11 , wherein the means for shielding the antenna element from electric fields further includes means for removing the electrostatic surface charges from the antenna element.