Programmable power splitter circuits and methods

A method comprising:

• receiving a control signal indicative of a selected power-split ratio at a splitter circuit;
• and
• in response to the control signal:
• selectively configuring a first capacitance associated with a first signal path from a first port to a second port of the splitter circuit based on the control signal;
• selectively configuring a second capacitance associated with a second signal path from the first port to a third port of the splitter circuit based on the control signal;
• and
• wherein a difference between the first capacitance and the second capacitance defines the power-split ratio.

A device comprises:

• an output stage including a first amplifier with a first input and a first output and including a second amplifier with a second input and a second output;
• a driver circuit including an input and including an output;
• and
• a splitter circuit comprising:
• a first port coupled to the output of the driver circuit;
• a second port coupled to the first input of the first amplifier;
• a third port coupled to the second input of the second amplifier;
• an inductor including a first terminal coupled to the first port and including a second terminal coupled to ground;
• a first capacitor circuit including a first terminal coupled to the first port and a second terminal coupled to the second port;
• a second capacitor circuit including a first terminal coupled to the first port and a second terminal coupled to the third port;
• and
• an isolation impedance coupled between the second port and the third port;
• and
• wherein the first capacitor circuit and the second capacitor circuit are programmable to provide a selected power-power split ratio between the first output signal and the second output signal.