Patent ID: 9588529
Date: 2017-03-07
CPC Classifications: G05F,H01L,H02M,H03F,H04B

Claim:
1. A wireless device, comprising: at least one antenna configured to facilitate transmission and receiving of radio-frequency signals; a transceiver interconnected to the antenna and configured to generate a radio frequency signal for transmission through the antenna and to process a radio frequency signal received from the antenna; and a voltage regulator interconnected to the transceiver and configured to provide a desired voltage to the transceiver at an output node, the voltage regulator further configured to be capable of operating in a regulation mode in which the desired voltage includes a regulated voltage, the voltage regulator further configured to be capable of operating in a bypass mode in which the desired voltage includes a bypass voltage, the voltage regulator including a switch coupled to an input node and the output node and including a pass transistor configured to be controlled by a control signal, the voltage regulator further including a voltage generator and a differential amplifier, the voltage generator configured to receive an input voltage from the input node and to provide a reference voltage and one or more bias voltages to the differential amplifier, the differential amplifier configured to generate the control signal for the pass transistor, the voltage generator including a first stack of field effect transistors configured to generate the one or more bias voltages and including at least one field effect transistor that operates in a sub-threshold mode when the voltage regulator operates in the bypass mode, the voltage generator further including a second stack of field effect transistors and a plurality of diodes, the second stack of field effect transistors configured to generate a mirrored current by mirroring a current flowing through the first stack of field effect transistors, and to generate the reference voltage based on providing the mirrored current to the plurality of diodes.