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AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsDonald Felt Kimball, Joseph L. Archambault, Walter Haley
Estimating the term…
An error amplifier circuit reduces distortion in an amplified signal by reflecting a feedback signal into the amplified signal using an output transformer. A first amplifier generates a reference signal corresponding to the input signal from which the amplifier output signal is derived. This reference signal represents the desired waveform for the amplified signal. An error sense element generates an error signal based on the difference between the reference and amplified signals. The error sense element preferably imparts high common-mode rejection to the error signal. A second amplifier generates the feedback signal based on amplifying the error signal, and an output transformer generates a compensated amplified signal by coupling the feedback signal into the amplified signal. The output transformer increases the reflected load impedance seen by the error amplifier, thus relieving it from driving the feedback signal into the potentially low load impedance driven by the compensated amplified signal.
An error amplifier circuit to reduce distortion in an amplified signal, the error amplifier circuit comprising:
A method of reducing distortion in an amplified signal generated by amplifying an input signal with a primary amplifier, the method comprising:
A radio base station for use in a communication network, the radio base station including at least one error amplifier circuit for reducing distortion in amplified signals, said error amplifier circuit comprising:
Dependencies are inferred from the claim text.