Unit amplification circuit, amplifier and receiving circuit
AssigneeSamsung Electronics Co., Ltd.
InventorsHeeyong Yoo, Beomyu Park, Byoungjoong Kang, Jeongyeol Bae, Bosung Suh, Sangmin Yoo, Jongsoo Lee
Life of this patent
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Abstract
A unit amplification circuit includes a push-pull circuit having a transistor with a gate connected to an input terminal, a symmetrical circuit connected symmetrically to the push-pull circuit and configured to be turned off in a first operation mode and turned on in a second operation mode, and a path control circuit connected to a drain of the transistor and configured to connect the drain and an output terminal in the first operation mode and to disconnect the drain and the output terminal in the second operation mode.
Claims21
A unit amplification circuit comprising:
- a push-pull circuit having a transistor with a gate connected to an input terminal;
- a symmetrical circuit connected symmetrically to the push-pull circuit and configured to be turned off in a first operation mode and turned on in a second operation mode;
- and
- a path control circuit connected to a drain of the transistor and configured to connect the drain and an output terminal in the first operation mode and to disconnect the drain and the output terminal in the second operation mode.
An amplifier comprising:
- a plurality of unit amplification circuits, each configured to operate with a respective gain in a first operation mode and with a different respective gain in a second operation mode,
- wherein,
- each of the plurality of unit amplification circuits comprises:
- a push-pull circuit having a transistor with a gate connected to an input terminal;
- a symmetrical circuit connected symmetrically to the push-pull circuit and configured to be turned off in the first operation mode and turned on in the second operation mode;
- and
- a path control circuit connected to a drain of the transistor and configured to connect the drain to an output terminal in the first operation mode and to disconnect the drain from the output terminal in the second operation mode.
A receiving circuit comprising:
- an amplifier configured to amplify a receive signal through a plurality of unit amplification circuits, each configured to operate with a respective gain in a first operation mode and with a different respective gain in a second operation mode;
- a mixer configured to convert the receive signal into a baseband signal through a local oscillator (LO) signal;
- and
- an analog baseband filter configured to filter the baseband signal,
- wherein,
- each of the plurality of unit amplification circuits comprises:
- a push-pull circuit having a transistor with a gate to which the receive signal is applied;
- a symmetrical circuit connected symmetrically to the push-pull circuit and configured to be turned off in the first operation mode and turned on in the second operation mode;
- and
- a path control circuit connected to a drain of the transistor and configured to connect the drain to the mixer in the first operation mode and to disconnect the drain from the mixer in the second operation mode.
(canceled)
Dependencies are inferred from the claim text.