Radio frequency (rf) circuit including power stage with rf noise blocking or attenuation for increased dynamic power range

A structure comprising:

• a mixer stage;
• and
• a power stage including:
• an input terminal connected to the mixer stage;
• an intermediate node;
• an output terminal;
• a power boosting path including a first amplifier and a second amplifier connected in series;
• a bypass path;
• first and second power stage switches concurrently operable to connect opposite ends of one of the power boosting path and the bypass path to the input terminal and the intermediate node, respectively;
• and
• a variable attenuator connected between the intermediate node and the output terminal.

A structure comprising:

• a mixer stage;
• and
• a power stage including:
• an input terminal and an output terminal, wherein the input terminal is connected to the mixer stage;
• a power boosting path including a first amplifier, a second amplifier, and a variable attenuator connected in series;
• a bypass path;
• and
• first and second power stage switches concurrently operable to connect opposite ends of one of the power boosting path and the bypass path to the input terminal and the output terminal, respectively.