Low voltage transmitter

摘要

A wireless communications transmitter is divided into N binary weighted communication signal processing paths including both fixed and variable gain communication signal processing chains. Specific bit sequences are used to select a combination of fixed and variable gain signal processing paths to adjust to a desired transmitter output power. Alternately, high and low power communication signal processing paths are chosen as needed with the high power communication signal processing path including an odd order harmonic notch filter.

主权项

1. A method in a wireless communications transmitter comprising:
determining a desired transmitter output power; selecting from N binary weighted communication signal processing paths a first one or a first combination of paths including fixed gain communication signal processing; selecting from the N binary weighted communication signal processing paths a second path including variable gain communication signal processing; and wherein power used during collective processing of communication signals through a combination of the selected first one or first combination of paths and the second path substantially equals the desired transmitter output power.