公开(公告)号：US20250023528A1

公开(公告)日：2025-01-16

申请号：US18739593

申请日：2024-06-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： KYUNGHYUN YOON ,  JEONGYEOL BAE ,  JONGSOO LEE ,  SANGMIN YOO

IPC: H03F3/24 ,  H03D7/00 ,  H03F1/56 ,  H04B1/04

Abstract: Disclosed is an RF circuit, which includes a mixer that converts a first signal into a second signal using a local oscillator (LO) signal, an amplifier that amplifies the second signal, and an impedance tuner circuit connected between the mixer and an input terminal of the amplifier, and that adjusts a conversion gain of the mixer by presenting a variable impedance.

公开(公告)号：US20250080142A1

公开(公告)日：2025-03-06

申请号：US18676949

申请日：2024-05-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： HEESOO KIM ,  SANGYUN LEE ,  JEONGYEOL BAE ,  JIYOUNG LEE ,  SANGMIN YOO ,  JONGSOO LEE

IPC: H04B1/00 ,  H04B1/04 ,  H04B1/10 ,  H04B1/525

Abstract: An RF circuit including: first and second ports receiving first and second RF signals; a (1-1)-th amplification stage and a (1-2)-th amplification stage connected to the first port and a first ground to amplify the first RF signal; a (2-1)-th amplification stage and a (2-2)-th amplification stage connected to the second port and a second ground to amplify the second RF signal; a (1-1)-th switch connected to the (1-1)-th amplification stage and the second ground, and a (1-2)-th switch connected to the (1-2)-th amplification stage and the second ground; a (2-1)-th switch connected to the (2-1)-th amplification stage and the first ground, and a (2-2)-th switch connected to the (2-2)-th amplification stage and the first ground; and a mixer to mix the first RF signal or the second RF signal with an LO signal, and mix the first RF signal or the second RF signal with the LO signal.

公开(公告)号：US20250080154A1

公开(公告)日：2025-03-06

申请号：US18739418

申请日：2024-06-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： WOOSEOK LEE ,  JEONGYEOL BAE ,  SANGMIN YOO ,  JONGSOO LEE

IPC: H04B1/40 ,  H03F3/45 ,  H04B1/00

Abstract: An electronic circuit includes a first inductor connected to an input terminal, a second inductor and a third inductor connected in series to each other and connected in parallel with the first inductor, a first switch connected between the second inductor and the third inductor, and a processor electrically connected to the first switch. The processor may be configured to close the first switch in response to a first request such that a first signal in a first frequency band is output through an output side of the electronic circuit, and to open the first switch in response to a second request, distinct from the first request, such that a second signal in a second frequency band, lower than the first frequency band, is output through the output side.

公开(公告)号：US20240154590A1

公开(公告)日：2024-05-09

申请号：US18343367

申请日：2023-06-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： JOONGGEUN LEE ,  JEONGYEOL BAE ,  JONGSOO LEE ,  SANGMIN YOO

IPC: H03F3/45 ,  H03F1/32

CPC classification number: H03F3/45264 ,  H03F1/3211 ,  H03F2200/297 ,  H03F2200/451

Abstract: Disclosed is an amplifier including a first transistor and a second transistor to which differential input signals are applied to gate terminals thereof, respectively, a second transistor having a first end connected to the first transistor, a gate terminal receiving a first bias signal, and a second end outputting a first differential output signal of a differential output signal pair, a fourth transistor having a first end connected to the second transistor, a gate terminal receiving a second bias signal, and having a second end outputting the a second differential output signal, and a pair of capacitors coupled to the second transistor and the fourth transistor, and having a cross-coupled structure with respect to each other.