Patent ID: 7761068

Claim:
A wireless device comprising: a controller configured to regulate the operation of the wireless device and to perform computations; a modem coupled to the controller, the modem configured to modulate data to be transmitted by the wireless device; a radio frequency circuit coupled to the controller, the radio frequency circuit configured to convert a digital data stream into an analog signal and to mix the analog signal with a carrier signal; and an amplifier coupled to the radio frequency unit, the amplifier configured to increase a signal level of the mixed analog signal to a level for transmission by an antenna, the amplifier comprising, a digital power amplifier to produce a current based on a value provided by a digital control bits bus when a clock signal provided a clock signal source is active, the digital power amplifier comprising, a plurality of logic gate and transistor pairs, each logic gate and transistor pair comprising a logic gate coupled to the clock signal source and to the digital control bits bus, the logic gate configured to logically combine the clock signal and a data value of the digital control bits bus; and a transistor having a control terminal coupled to an output of the logic gate, the transistor to regulate a current based on a value on the control terminal, a matching circuit coupled to the digital power amplifier, the matching circuit configured to impedance match the digital power amplifier, and a power amplifier coupled to the matching circuit, the power amplifier to increase the signal level of the current provided by the digital power amplifier.