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US 8,872,588 B2Granted
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.
Claims17
An amplifier comprising:
- at least one amplifying element;
- and
- a biasing circuit configured to bias the at least one amplifying element with a bias voltage, wherein the biasing circuit is configured to vary the bias voltage such that the at least one amplifying element switches between switching and non-switching modes of operation in response to a binary bias control signal selecting either switching mode of operation or the non-switching mode of operation;
- and
- wherein at least two amplifying elements are coupled in parallel.
2 more elements
Dependencies are inferred from the claim text.