4 results about "Wilson current mirror" patented technology

To provide an envelope tracking system in which changes in power amplifier supply voltage arising from envelope tracking are compensated.SOLUTION: An envelope tracking system includes a power amplifier 250 that receives power from a power amplifier supply voltage VPA and amplifies a radio frequency (RF) signal RFIN. The power amplifier includes: an envelope tracker that generates the power amplifier supply voltage based on an envelope of the RF signal; a Wilson current minor 232; and a field-effect transistor NFET 231 for amplifying the RF signal. The Wilson current mirror includes: an input that receives a reference current IREF from a reference current source 236; and an output connected to the power amplifier supply voltage. The NFET amplifies an RF input signal to generate an RF output signal RFOUT. Additionally, a gate of the NFET is biased by an internal voltage of the Wilson current mirror and a source receives a ground voltage, while a drain receives the power amplifier supply voltage from a choke inductor 235.SELECTED DRAWING: Figure 3

A system and method for autonomous machine identity succession utilize a hardware-rooted semantic sentinel and an analog neuromorphic audit engine to ensure state integrity. The system detects micro-architectural threat signatures through continuous asynchronous voltage monitoring and gates cryptographic signatures via a low-impedance analog interlock circuit physically interposed on a processor signature-enable line. Behavioral integrity is verified through an adversarial “Proof of Logical Alignment” handshake, where proposed action vectors are audited via an analog memristor crossbar array utilizing physical current summation replicated through a high-impedance Wilson Current Mirror isolation barrier. The invention ensures the atomic migration of identities across heterogeneous hardware architectures through a “Handshake-and-Zeroize” protocol, utilizing a series-pass isolation switch and crowbar MOSFET circuit to provide irreversible thermodynamic destruction of the source state.

The application belongs to the technical field of power electronics, and provides an active gate drive circuit based on variable resistance and variable current regulation, which comprises a control unit, an isolated gate drive module, a gate variable resistance module, a gate variable current module, a power loop and a gate voltage feedback module. The application combines discrete resistance switching (coarse adjustment) with linear current source regulation (fine adjustment), realizes fine management of the switching trajectory of a power device, limits the current variation rate by initially connecting a large resistance in the on process, then switches to a low resistance to accelerate conduction, and splits part of the current from the gate through a Wilson current mirror structure to suppress current overshoot, and in the off process, initially discharges rapidly through a low resistance, then switches to a high resistance to increase damping, and injects a compensation current into the gate through a current mirror to suppress voltage ringing.

A level shifter includes a Wilson current mirror circuit outputting an output voltage of an output node based on a first input voltage inverting a phase of an input voltage and a second input voltage inverting the phase of the first input voltage, a leakage current control circuit receiving the output voltage and controlling a leakage current generated in the Wilson current mirror circuit using the output voltage, and a latch circuit providing a voltage of a logic high level to the output node when the output voltage is a logic high level.