A transmitter for transferring power wirelessly, comprising: a means for driving arranged to receive a substantially square waveform and produce a first output signal and a second output signal; and a means for filtering configured to filter the first signal and the second signal, an output of the means for filtering configured to drive a wireless transmission circuit, the first signal on the first entry of the wireless transmission circuit, the second signal on the opposite entry of the wireless transmission circuit; wherein the means for driving comprises: a first means configured to receive the substantially square waveform and generate a first signal, the first means comprising a first means for storing energy in a magnetic field; a second means configured to receive the substantially square waveform and generate a second signal out of phase with the first signal, the second means comprising a second means for storing energy in a magnetic field inductively coupled with the first means for storing energy in a magnetic field, the first and the second means for storing energy in a magnetic field sharing a node, the first and the second means for storing energy in a magnetic field having a leakage inductance of at least a minimum value that is sufficient to produce a signal different from a substantially square waveform at an output of the first circuit and at an output of the second circuit; wherein the first means comprises a first switch and the second means comprises a second switch, and wherein the first means for storing energy in a magnetic field comprises a first choke inductor coupled to a drain of the first switch and the second means for storing energy in a magnetic field comprises a second choke inductor coupled to a drain of the second switch. a means for driving arranged to receive a substantially square waveform and produce a first output signal and a second output signal; and a means for filtering configured to filter the first signal and the second signal, an output of the means for filtering configured to drive a wireless transmission circuit, the first signal on the first entry of the wireless transmission circuit, the second signal on the opposite entry of the wireless transmission circuit; wherein the means for driving comprises: a first means configured to receive the substantially square waveform and generate a first signal, the first means comprising a first means for storing energy in a magnetic field; a second means configured to receive the substantially square waveform and generate a second signal out of phase with the first signal, the second means comprising a second means for storing energy in a magnetic field inductively coupled with the first means for storing energy in a magnetic field, the first and the second means for storing energy in a magnetic field sharing a node, the first and the second means for storing energy in a magnetic field having a leakage inductance of at least a minimum value that is sufficient to produce a signal different from a substantially square waveform at an output of the first circuit and at an output of the second circuit; wherein the first means comprises a first switch and the second means comprises a second switch, and wherein the first means for storing energy in a magnetic field comprises a first choke inductor coupled to a drain of the first switch and the second means for storing energy in a magnetic field comprises a second choke inductor coupled to a drain of the second switch. a first means configured to receive the substantially square waveform and generate a first signal, the first means comprising a first means for storing energy in a magnetic field; a second means configured to receive the substantially square waveform and generate a second signal out of phase with the first signal, the second means comprising a second means for storing energy in a magnetic field inductively coupled with the first means for storing energy in a magnetic field, the first and the second means for storing energy in a magnetic field sharing a node, the first and the second means for storing energy in a magnetic field having a leakage inductance of at least a minimum value that is sufficient to produce a signal different from a substantially square waveform at an output of the first circuit and at an output of the second circuit; wherein the first means comprises a first switch and the second means comprises a second switch, and wherein the first means for storing energy in a magnetic field comprises a first choke inductor coupled to a drain of the first switch and the second means for storing energy in a magnetic field comprises a second choke inductor coupled to a drain of the second switch.