Hybrid amplifier and signal combiner
A radio-frequency module comprises a low-noise amplifier including a common source transistor having a gate node that receives a radio-frequency input signal and a drain node that transmits a combined radio-frequency output signal, and a correction signal input path configured to receive a correction signal and provide the correction signal to a source node of the common source transistor to generate, at least in part, the combined radio-frequency output signal.
1. A radio-frequency module comprising:
a low-noise amplifier including a common source transistor having a gate node that receives a radio-frequency input signal and a drain node that transmits a combined radio-frequency output signal; and
a noise-cancellation signal input path configured to receive a radio-frequency noise-cancellation signal and provide the radio frequency noise-cancellation signal to a source node of the common source transistor to cancel a noise signal present in the radio-frequency input signal to generate, at least in part, the combined radio-frequency output signal, the radio frequency noise-cancellation signal being inversely matched to the noise signal at least in part.
2. The radio-frequency module of claim 1 , wherein no separate signal combiner is coupled to the gate node.
3. The radio-frequency module of claim 1 further comprising a common gate transistor having a source node coupled to the drain node of the common source transistor and a drain node coupled to a radio-frequency output node.
4. The radio-frequency module of claim 1 , wherein the noise-cancellation signal input path includes a buffer amplifier.
5. The radio-frequency module of claim 1 , wherein the common source transistor is a Metal Oxide Semiconductor Field Effect Transistor (MOSFET).
6. The radio-frequency module of claim 1 further comprising a first inductor coupled to the gate node of the common source transistor and a second inductor coupled to the source node of the common source transistor in parallel with the noise-cancellation signal input path.
7. A radio-frequency circuit comprising:
a low-noise amplifier including a common source transistor having a gate node that receives a radio-frequency input signal and a drain node that transmits a combined radio-frequency output signal; and
a noise-cancellation signal input path configured to receive a radio-frequency noise-cancellation signal and provide the radio frequency noise-cancellation signal to a source node of the common source transistor to cancel a noise signal present in the radio-frequency input signal to generate, at least in part, the combined radio-frequency output signal, the radio frequency noise-cancellation signal being inversely matched to the noise signal at least in part.
8. The radio-frequency circuit of claim 7 , wherein no separate signal combiner is coupled to the gate node of the common source transistor.
9. The radio-frequency circuit of claim 7 further comprising a common gate transistor having a source node coupled to the drain node of the common source transistor and a drain node coupled to a radio-frequency output node.
10. The radio-frequency circuit of claim 7 , wherein the noise-cancellation signal input path includes a buffer amplifier.
11. The radio-frequency circuit of claim 7 , wherein the common source transistor is a Metal Oxide Semiconductor Field Effect Transistor (MOSFET).
12. The radio-frequency circuit of claim 7 further comprising a first inductor coupled to the gate node of the common source transistor and a second inductor coupled to the source node of the common source transistor in parallel with the noise-cancellation signal input path.
13. A wireless device comprising:
an antenna configured to receive a radio-frequency input signal;
a low-noise amplifier including a common source transistor having a gate node that receives the radio-frequency input signal and a drain node that transmits a combined radio-frequency output signal;
noise-cancellation signal generation circuitry configured to generate a radio-frequency noise-cancellation signal designed to cancel out a noise component of the radio-frequency input signal, the radio frequency noise-cancellation signal being inversely matched to the noise component of the radio-frequency signal at least in part;
a noise-cancellation signal input path configured to receive the radio frequency noise-cancellation signal and provide the radio frequency noise-cancellation signal to a source node of the common source transistor to cancel the noise component to generate, at least in part, the combined radio-frequency output signal; and
a transceiver module configured to receive the combined radio-frequency output signal.
14. The wireless device of claim 13 , wherein no separate signal combiner is coupled to the gate node of the common source transistor.
15. The wireless device of claim 13 further comprising a common gate transistor having a source node coupled to the drain node of the common source transistor and a drain node coupled to a radio-frequency output node.
16. The wireless device of claim 13 , wherein the noise-cancellation signal input path includes a buffer amplifier.
17. The wireless device of claim 13 , wherein the common source transistor is a Metal Oxide Semiconductor Field Effect Transistor (MOSFET).
18. The wireless device of claim 13 further comprising a first inductor coupled to the gate node of the common source transistor and a second inductor coupled to the source node of the common source transistor in parallel with the noise-cancellation signal input path.