Wireless transmitter having multiple power amplifier drivers (PADs) that are selectively biased to provide substantially linear magnitude and phase responses

A method of transmitting an input signal, comprising:

• biasing first and second input transistors in respective first and second power amplifier drivers (PADs) with respective first and second biases so that:
• (1) an input capacitance of the first input transistor is directly proportional to an amplitude of the input signal;
• and (2) an input capacitance of the second input transistor is inversely proportional to the amplitude of the input signal, resulting in respective first and second non-linear phase responses;
• and combining the first and second non-linear phase responses to provide a combined substantially linear phase response.

A transmitter, configured to transmit an input signal, comprising:

• means for biasing a first input transistor of a first power amplifier driver (PAD) with a first bias so that a corresponding first input capacitance is directly proportional to an amplitude of the input signal;
• and
• means for biasing a second input transistor of a second power amplifier driver (PAD) with a second bias so that a corresponding second input capacitance is inversely proportional to the amplitude of the input signal;
• wherein the first PAD and the second PAD are coupled in parallel to provide a combined substantially linear phase response.