Amplifier
AssigneeNXP B.V.
InventorsKim Li, Simon Peter Goddard
Life of this patent
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Abstract
An amplifier comprising at least one amplifying element (20a, 25a) and a biasing circuit (32a, 32b) for biasing the or each amplifying element with a bias voltage is disclosed. The biasing circuit (32a, 32b) is adapted to vary the bias voltage such that the or each amplifying element switches between non-switching and switching modes of operation in response to a bias control signal (4) passing through a threshold value.
Claims15
An amplifier comprising at least one amplifying element and a biasing circuit for biasing the or each amplifying element with a bias voltage, wherein the biasing circuit is adapted to vary the bias voltage such that the or each amplifying element switches between switching and non-switching modes of operation in response to a bias control signal passing through a threshold value.
An amplifier comprising a first transistor and a second transistor in series with the first transistor, the second transistor being operable as a switch in response to a gain control signal for selectively diverting a portion of the current flowing through the first transistor to an alternating current ground node.
Dependencies are inferred from the claim text.