公开(公告)号：US20210119671A1

公开(公告)日：2021-04-22

申请号：US17060743

申请日：2020-10-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Wonjun JUNG ,  Seunghoon KANG ,  Kiyong SON

IPC: H04B5/00 ,  H03F3/193 ,  H02J50/80 ,  H03F3/24 ,  H02J50/12

Abstract: A switching transformer includes a drive amplifier configured to output an input signal by amplifying a source signal, a primary circuit including a set of primary inductors, a primary switch, and a first primary connecting wire, the set of primary inductors being configured to receive the input signal at a first primary input/output terminal, the primary switch being configured to adjust an inductance of the set of primary inductors based on a first switching operation, and the first primary connecting wire being configured to electrically connect the first primary input/output terminal to an end of the primary switch, and a secondary circuit configured to mutually electrically couple to the first primary connecting wire and at least one primary inductor among the set of primary inductors.

公开(公告)号：US20220376715A1

公开(公告)日：2022-11-24

申请号：US17749399

申请日：2022-05-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Wonjun JUNG

IPC: H04B1/04 ,  H04B1/00

Abstract: Disclosed is a transmission radio frequency (RF) circuit including a transmission mixer configured to receive an intermediate frequency (IF) signal and up-convert the IF signal into an RF signal, a driving amplifier configured to amplify the RF signal, and an LLC filter electrically connected to a differential output of the transmission mixer and a differential input of the driving amplifier, the LLC filter comprising a first inductor connecting a first node of the differential output of the transmission mixer to a first intermediate node, a second inductor connecting a second node of the differential output of the transmission mixer to a second intermediate node, a third inductor connecting the first intermediate node to the second intermediate node, and a capacitor in parallel with the third inductor.