A system for generating a pulsed excitation field for excitation of a
leadless marker assembly. One aspect of the system comprises a source
generator assembly having a power supply, an energy storage device, a
switching network and a source coil interconnected and configured to
deliver a pulsed magnetic excitation signal waveform. The power supply is
configured to deliver power to energize the energy storage device. The
switching network is configured to: direct electrical current through the
source coil; alternately switch between a first on position and a second
on position; switch to an off position to prevent energy transfer from the
energy storage device to the source coil; alternately transfer stored
energy from the energy storage device to the source coil and to transfer
stored energy from the source coil back to the energy storage device; and
the source coil being coupled to the switching network to generate a
pulsed excitation signal.
