Abstract: Voltage regulator circuitry includes a first gain stage, a second gain stage, and a feedback stage. Feedback is provided between the feedback stage, the second gain stage, and the first gain stage in order to tightly regulate an output voltage of the voltage regulator circuitry such that the output voltage is independent of process variations present in the devices therein. The voltage regulator circuitry is fabricated using a pseudomorphic high electron mobility transistor (pHEMT) process in order to reduce the size thereof and provide short turn-on times and low quiescent current.

Abstract: Voltage regulator circuitry includes a first gain stage, a second gain stage, and a feedback stage. Feedback is provided between the feedback stage, the second gain stage, and the first gain stage in order to tightly regulate an output voltage of the voltage regulator circuitry such that the output voltage is independent of process variations present in the devices therein. The voltage regulator circuitry is fabricated using a pseudomorphic high electron mobility transistor (pHEMT) process in order to reduce the size thereof and provide short turn-on times and low quiescent current.

Abstract: Antenna switching circuitry comprises a plurality of communication ports, an antenna port, a plurality of switches, and an ESD protection device. The plurality of switches are adapted to selectively couple one or more of the communication ports to the antenna port in order to transmit or receive a signal. The ESD protection device is coupled between one of the plurality of communication ports and ground, and is adapted to form a substantially low impedance path to ground during an ESD event. Upon the occurrence of an ESD event, a received electrostatic charge passes through one or more of the plurality of switches to the ESD protection device, where it is safely diverted to ground. By using only one ESD protection device, desensitization of the antenna switching circuitry due to the parasitic loading of the ESD protection device is avoided. Further, the area of the antenna switching circuitry is minimized.