Pulse shaping biasing circuitry

摘要

Pulse shaping biasing circuitry includes square wave generator circuitry and inverse ramp signal generator circuitry. The square wave generator circuitry is coupled between an input node and signal summation circuitry, and is configured to generate a square wave signal. The inverse ramp signal generator circuitry is coupled in parallel with the square wave generator circuitry and configured to generate an inverted ramp signal based on a supply voltage and a temperature. By generating the inverted ramp signal based on the supply voltage and temperature, the pulse shaping biasing circuitry may compensate an RF power amplifier operated in a pulsed mode such that an error vector magnitude thereof is minimized even as the supply voltage provided to the RF power amplifier and the temperature change.

主权项

1. Pulse shaping biasing circuitry for a radio frequency (RF) power amplifier comprising:
square wave signal generator circuitry coupled between an input node and signal summation circuitry, the square wave signal generator circuitry configured to generate a square wave signal; and inverse ramp signal generator circuitry coupled in parallel with the square wave signal generator circuitry between the input node and the signal summation circuitry and configured to generate an inverted ramp signal based on a supply voltage and a temperature.