公开(公告)号：US11418163B1

公开(公告)日：2022-08-16

申请号：US16898838

申请日：2020-06-11

Applicant: Marvell Asia Pte, Ltd.

Inventor： Sagar Ray ,  Jeffrey Wang ,  Karthik Raviprakash

IPC: H03F3/45 ,  H03G1/00 ,  H03F3/72

Abstract: The present invention is directed electrical circuits. According to a specific embodiment, the present invention provides a variable gain amplifier that includes a first switch, which includes drain terminal coupled to an inductor. A second switch is configured in parallel to the inductor, and the resistance value of the second switch is adjustable in response to a control signal. There are other embodiments as well.

公开(公告)号：US11750162B1

公开(公告)日：2023-09-05

申请号：US17887806

申请日：2022-08-15

Applicant: Marvell Asia Pte Ltd.

Inventor： Sagar Ray ,  Jeffrey Wang ,  Karthik Raviprakash

IPC: H03F3/45 ,  H03G1/00 ,  H03F3/72

CPC classification number: H03G1/0088 ,  H03F3/72 ,  H03G1/0029 ,  H03G1/0082 ,  H03F2200/294 ,  H03G1/0023

Abstract: A variable gain amplifier system includes a variable gain amplifier circuit configured to receive an input signal, apply a gain to the input signal, and generate an output signal in accordance with the gain applied to the input signal. The variable gain amplifier circuit is further configured to receive a gain control signal and a bandwidth control signal. A control module is configured to generate the gain control signal to adjust the gain of the variable gain amplifier circuit and generate, separately from the gain control signal, the bandwidth control signal to adjust a bandwidth of the variable gain amplifier circuit by selectively varying an amount of inductance contributed by an inductor circuit of the variable gain amplifier circuit.