CPC H03F 3/189 (2013.01) [H04B 1/16 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01)] | 20 Claims |
1. A low noise amplifier comprising:
an input configured to receive a radio frequency receive signal;
a first amplification stage including a plurality of selectable gain transistors; and
a second amplification stage having a lower gain than the first amplification stage, the low noise amplifier operable in a first gain mode in which the first amplification stage and the second amplification stage operate in a cascade to amplify the radio frequency receive signal, and a second gain mode in which the first amplification stage amplifies the radio frequency receive signal and the second amplification stage is bypassed, a chosen combination of the selectable gain transistors different for the first gain mode and the second gain mode.
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