Abstract: Systems and methods for generating a radio frequency (RF) signal by a digital-to-analog converter (DAC) with transmission frequency within a wide transmission frequency range is described. An output reactance of the DAC coupled (directly or indirectly) to one or more antennas corresponds to the transmission frequency of the RF signals. Multiple embodiments of the DAC are described to include circuitry for tuning the output reactance of the DAC, and therefore, shifting a center frequency to select a transmission frequency range (from multiple transmission frequency ranges) for providing the RF signals.

Abstract: An inductor or transformer with the inductor can include one or more windings split into strands along a radial path of the winding and provide for a more uniform current distribution across a width of the winding. The winding(s) can comprise twisting components as twistings or strand crossings located at various locations along the winding. The twisting components span the winding along a winding width with a connector or crossing strand and change a position of one strand to another at points that different strands of the winding are cut or spliced.

Abstract: An inductor or transformer with the inductor can include one or more windings split into strands along a radial path of the winding and provide for a more uniform current distribution across a width of the winding. The winding(s) can comprise twisting components as twistings or strand crossings located at various locations along the winding. The twisting components span the winding along a winding width with a connector or crossing strand and change a position of one strand to another at points that different strands of the winding are cut or spliced.

Abstract: An inductor or transformer with the inductor can include one or more windings split into strands along a radial path of the winding and provide for a more uniform current distribution across a width of the winding. The winding(s) can comprise twisting components as twistings or strand crossings located at various locations along the winding. The twisting components span the winding along a winding width with a connector or crossing strand and change a position of one strand to another at points that different strands of the winding are cut or spliced.

Abstract: An inductor or transformer with the inductor can include one or more windings split into strands along a radial path of the winding and provide for a more uniform current distribution across a width of the winding. The winding(s) can comprise twisting components as twistings or strand crossings located at various locations along the winding. The twisting components span the winding along a winding width with a connector or crossing strand and change a position of one strand to another at points that different strands of the winding are cut or spliced.