Bandwidth tuning using single-input multiple-output low-noise amplifier

A circuit, comprising:

• a first capacitor configured to couple to an antenna;
• a second capacitor coupled to the first capacitor and to a low-noise amplifier sub-circuit;
• a transmitter sub-circuit coupled to the first capacitor and to the low-noise amplifier sub-circuit, wherein the transmitter sub-circuit is coupled in parallel with the second capacitor, and wherein the transmitter sub-circuit comprises a power amplifier and a balun;
• the low-noise amplifier sub-circuit comprising:
• a transistor that includes a gate, a source, and a drain;
• a first inductor that includes a first terminal configured to couple to the antenna via the first capacitor and the second capacitor and includes a second terminal;
• a second inductor that includes a first terminal coupled to the first terminal of the first inductor and includes a second terminal coupled to the gate of the transistor;
• and
• a third inductor that includes a first terminal coupled to the source of the transistor and includes a second terminal;
• and
• a tuning sub-circuit coupled to the drain of the transistor.

A low-noise amplifier circuit, comprising:

• a first inductor that includes a first set of conductive features arranged in rings;
• a second inductor that includes a second set of conductive features arranged in rings that encircle the first set of conductive features;
• and
• a third inductor that includes a third set of conductive features proximate to the second set of conductive features and disposed such that the second set of conductive features is between the first set of conductive features and the third set of conductive features;
• wherein the second set of conductive features comprises a first terminal configured to couple to an antenna and a second terminal coupled to a gate of a transistor;
• wherein the first set of conductive features comprises a first terminal configured to couple to the antenna and coupled to the first terminal of the second set of conductive features and a second terminal coupled to receive a bias voltage and coupled to a first ground node;
• and
• wherein the third set of conductive features comprises a first terminal coupled to a source of the transistor and a second terminal coupled to a second ground node.