公开(公告)号：EP4280456A1

公开(公告)日：2023-11-22

申请号：EP23174050.7

申请日：2023-05-17

申请人： Qorvo US, Inc.

发明人： SCOTT, Baker ,  MAXIM, George ,  OSGOOEI, Mostafa Savadi ,  DESIKAN, Padmmasini

IPC分类号： H03F1/26 ,  H03F1/32 ,  H03F3/195 ,  H03F1/22 ,  H03F3/21

摘要： Low noise amplifiers (LNAs) are disclosed. In one aspect, an LNA may have distortion cancellation that is orthogonally implemented relative to noise cancellation such that changes to the distortion cancellation do not affect the noise cancellation. In further example aspects, cancellation circuitry is added in parallel to a main or primary LNA path. The cancellation circuitry may include an initial impedance matching amplifier (200B) that effectuates noise cancellation and a second amplifier (202A) that effectuates distortion cancellation. Variations in the placement and composition of the second amplifier are provided. By providing a second path that allows for independent control of noise and distortion cancellation, overall performance of the LNA is improved.

公开(公告)号：EP4266575A1

公开(公告)日：2023-10-25

申请号：EP23166775.9

申请日：2023-04-05

申请人： Qorvo US, Inc.

发明人： SCOTT, Baker ,  DESIKAN, Padmmasini ,  MAXIM, George ,  MURGULESCU, Mihai

IPC分类号： H03F1/14 ,  H03F1/08 ,  H03F1/22 ,  H03F1/26 ,  H03F1/32 ,  H03F3/193 ,  H03F3/21 ,  H03F3/50 ,  H03F3/72 ,  H03F1/42

摘要： Disclosed is a low noise amplifier system (10). Included is a main amplifier (24) having a main input coupled to a RF input (16) and a main output connected to an RF output (20) and an impedance amplifier (12) having an impedance input coupled to the RF input (16) and an impedance output coupled to the RF output (20), wherein the impedance amplifier (12) is configured to provide input impedance matching to the main amplifier (24). The impedance amplifier (12) also provides a first noise path that passes through the impedance amplifier (12) such that the noise generated by the impedance amplifier (12) is substantially out of phase with the noise that passes through a second noise path that passes through the main amplifier (24). A neutralization amplifier (56, 62) is configured to reduce parasitic capacitive loading within the first noise path.

公开(公告)号：EP4266576A1

公开(公告)日：2023-10-25

申请号：EP23166771.8

申请日：2023-04-05

申请人： Qorvo US, Inc.

发明人： SCOTT, Baker ,  MAXIM, George ,  MURGULESCU, Mihai ,  DESIKAN, Padmmasini

IPC分类号： H03F1/26 ,  H03F1/08 ,  H03F1/14 ,  H03F3/50 ,  H03F3/72 ,  H03F1/22 ,  H03F3/193 ,  H03F3/21 ,  H03F1/32 ,  H03F1/42

摘要： Disclosed is a low noise amplifier system (10). Included is a main amplifier (24) having a main input coupled to a RF input and a main output connected to an RF output and an impedance amplifier (12) having an impedance input coupled to the RF input and an impedance output coupled to the RF output, wherein the impedance amplifier (12) is configured to provide input impedance matching to the main amplifier (24). The impedance amplifier (12) also provides a first noise path that passes through the impedance amplifier (12) such that the noise generated by the impedance amplifier (12) is substantially out of phase with the noise that passes through a second noise path that passes through the main amplifier (24).