公开(公告)号：US20210359654A1

公开(公告)日：2021-11-18

申请号：US17317483

申请日：2021-05-11

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Min PARK ,  Jang Hong CHOI ,  Bon Tae KOO ,  Kisu KIM ,  Kyung Hwan PARK

IPC: H03F3/24 ,  H03F3/217 ,  H03G3/30

Abstract: Provided is a drive amplifier. A drive amplifier may include: a main circuit configured to receive an RF input signal and output a first RF output signal; and a selective bias adjustment circuit comprising a first common gate transistor to which a first common gate bias voltage is applied and a second common gate transistor to which a second common gate bias voltage is applied, and configured to output a second RF output signal using the first common gate transistor and the second common gate transistor.

公开(公告)号：US20200371200A1

公开(公告)日：2020-11-26

申请号：US16881763

申请日：2020-05-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kisu KIM ,  Bon Tae KOO

IPC: G01S7/292

Abstract: A radar includes a transmitter that generates a first signal that is a frequency modulated continuous wave (FMCW) signal and radiates the generated first signal to an outside, a receiver that receives a second signal based on the first signal and generates a baseband signal of the second signal, a signal processor that extracts a target frequency signal from the baseband signal, and a signal converter that outputs the target frequency signal that is controlled as a digital signal, and wherein the signal processor includes a high pass filter connected to the receiver, that receives the baseband signal, and attenuates a low frequency signal present in the received baseband signal, based on a first cutoff frequency, an amplifier that amplifies the attenuated baseband signal, and a signal controller that removes a direct current component of the amplified baseband signal, based on a second cutoff frequency.