CPC H03B 5/1212 (2013.01) [H03B 5/1228 (2013.01); H03B 5/1265 (2013.01); H03F 1/0211 (2013.01); H03F 1/0277 (2013.01); H03F 3/211 (2013.01); H03F 3/213 (2013.01); H03F 3/245 (2013.01); H03F 3/45 (2013.01); H03G 1/0005 (2013.01); H03G 3/004 (2013.01); H03G 3/3042 (2013.01); H04B 2001/0416 (2013.01)] | 18 Claims |
1. An integrated circuit comprising:
a coarse gain control circuit that includes:
a coarse gain input coupled to an oscillator;
a coarse gain output;
a coarse gain control input; and
a set of passive devices, including:
a first inductor that includes a first terminal and a second terminal;
a second inductor that includes a third terminal coupled to the second terminal, and a fourth terminal;
a third inductor that includes a fifth terminal coupled to the fourth terminal, and a sixth terminal;
a fourth inductor that includes a seventh terminal coupled to the sixth terminal, and an eighth terminal;
a fifth inductor that includes a ninth terminal coupled to the eighth terminal, and a tenth terminal; and
a sixth inductor that includes an eleventh terminal coupled to the tenth terminal, and a twelfth terminal;
a first amplifier stage that includes:
a first amplifier that includes a first amplifier gain control input, a first amplifier input coupled to the coarse gain output, and a first amplifier output; and
a first power supply that includes a first power supply input and a first power supply output coupled to the first amplifier gain control input; and
a second amplifier stage that includes:
a second amplifier that includes a second amplifier gain control input, a second amplifier input coupled to the first amplifier output, and a second amplifier output; and
a second power supply that includes a second power supply input and a second power supply output coupled to the second amplifier gain control input.
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