| 摘要 |
An embodiment of an LNA includes a voltage input, a voltage output, an input transistor connected as a source follower with a current source at the drain and source nodes of the input transistor, an input resistor connected between the source follower source node and signal ground, a gain boosting transistor with the gate connected to the input transistor drain node, wherein the source node is connected to ground and the drain node is connected through a load resistor to the input transistor source node. Such an LNA provides substantial improvement in power efficiency by adapting an output stage of the LNA to reuse the supply current of the input transistors to the LNA through a load resistor.
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