公开(公告)号：US20210391837A1

公开(公告)日：2021-12-16

申请号：US17461123

申请日：2021-08-30

Applicant: STMicroelectronics International N.V.

Inventor： Riju BISWAS ,  Ratul MITRA

IPC: H03F3/45

Abstract: Disclosed herein is a method including sinking current from a pair of input transistors of a differential amplifier while sourcing more current to the pair of input transistors than is sunk. The method further includes generating a pair of input differential signals using a pair of input voltage regulators, and amplifying a difference between the pair of input differential signals to produce a pair of differential output voltages, using the differential amplifier. The method also includes amplifying the pair of differential output voltages using at least one voltage gain amplifier, and generating control signals for current sources that source the current to the pair of input transistors of the differential amplifier, from the pair of differential output voltages after at least amplification.

公开(公告)号：US20210399705A1

公开(公告)日：2021-12-23

申请号：US16903552

申请日：2020-06-17

Applicant: STMicroelectronics International N.V.

Inventor： Riju BISWAS

IPC: H03G3/30 ,  H03F3/45 ,  G01S13/931

Abstract: Disclosed herein is a voltage gain amplifier for use in an automotive radar receiver chain. The voltage gain amplifier utilizes pole-zero cancelation to yield a desired transfer function without gain peaking at a bandwidth in which attenuation is desired, and utilizes a low pass filter effectively formed by a feedback loop including a high pass filter and a differential amplifier to ensure the desired level of attenuation at the desired bandwidth. In some instances, a chopper may be utilized in the feedback loop prior to the high pass filter, and after the differential amplifier, so as to reduce the bandwidth of the differential amplifier in the feedback loop.