Patents Assigned to BEI Electronics LLC
  • Class D amplifier using Fs/4 modulation and envelope tracking power supplies
    Patent number: 10020783
    Abstract: A high power class D amplifier/modulator for use in Radio Frequency ranges that is capable of digital modulation schemes at high efficiencies is disclosed. The new amplifier design features an envelope tracker unit that uses digital pulse-width modulation (PWM) generation to create analog I and Q phase high voltage signal components and sign bits. The I and Q phase signal components and sign bits are fed into an Fs/4 modulator stage to produce an analog output that is an high power RF signal modulated by the analog input signal.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: July 10, 2018
    Assignee: BEI Electronics LLC
    Inventor: Brian Lindemann