公开(公告)号：US20210175851A1

公开(公告)日：2021-06-10

申请号：US17142058

申请日：2021-01-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hariharan Nagarajan ,  Ashutosh Verma ,  Chung Lau ,  Tienyu Chang

IPC: H03D7/14 ,  H04B1/403 ,  H04B17/10

Abstract: A detector circuit includes: a squaring circuit configured to receive an output of a power amplifier of a radio transmitter and to produce an output current, the output of the power amplifier including: a desired tone; a local oscillator leakage tone; and an image tone, and the output current of the squaring circuit including: a direct current (DC) component including a function of the desired tone and an alternating current (AC) component; and a DC current absorber electrically connected to an output terminal of the squaring circuit, the DC current absorber being configured to filter out the DC component of the output current of the squaring circuit to produce a filtered output of the squaring circuit, the filtered output including the AC component including functions of the local oscillator leakage tone and the image tone.

公开(公告)号：US10897228B1

公开(公告)日：2021-01-19

申请号：US16810761

申请日：2020-03-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hariharan Nagarajan ,  Ashutosh Verma ,  Chung Lau ,  Tienyu Chang

IPC: H03D1/00 ,  H03D1/04 ,  H03D1/06 ,  H03D1/18 ,  H03D7/14 ,  H04B1/403 ,  H04B17/10

Abstract: A detector circuit includes: a squaring circuit configured to receive an output of a power amplifier of a radio transmitter and to produce an output current, the output of the power amplifier including: a desired tone; a local oscillator leakage tone; and an image tone, and the output current of the squaring circuit including: a direct current (DC) component including a function of the desired tone and an alternating current (AC) component; and a DC current absorber electrically connected to an output terminal of the squaring circuit, the DC current absorber being configured to filter out the DC component of the output current of the squaring circuit to produce a filtered output of the squaring circuit, the filtered output including the AC component including functions of the local oscillator leakage tone and the image tone.

公开(公告)号：US11581852B2

公开(公告)日：2023-02-14

申请号：US17511434

申请日：2021-10-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hariharan Nagarajan ,  Ashutosh Verma ,  Chung Lau ,  Tienyu Chang

IPC: H03D1/04 ,  H03D1/06 ,  H03D1/18 ,  H03D7/14 ,  H04B1/403 ,  H04B17/10

Abstract: According to one embodiment, a transceiver includes: a radio transmitter including a power amplifier; a detector circuit including: a squaring circuit configured to receive an output of the power amplifier of the radio transmitter and configured to produce an output current; and a DC current absorber electrically connected to an output terminal of the squaring circuit.

公开(公告)号：US11171609B2

公开(公告)日：2021-11-09

申请号：US17142058

申请日：2021-01-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hariharan Nagarajan ,  Ashutosh Verma ,  Chung Lau ,  Tienyu Chang

IPC: H03D1/04 ,  H03D1/06 ,  H03D1/18 ,  H03D7/14 ,  H04B1/403 ,  H04B17/10

Abstract: A detector circuit includes: a squaring circuit configured to receive an output of a power amplifier of a radio transmitter and to produce an output current, the output of the power amplifier including: a desired tone; a local oscillator leakage tone; and an image tone, and the output current of the squaring circuit including: a direct current (DC) component including a function of the desired tone and an alternating current (AC) component; and a DC current absorber electrically connected to an output terminal of the squaring circuit, the DC current absorber being configured to filter out the DC component of the output current of the squaring circuit to produce a filtered output of the squaring circuit, the filtered output including the AC component including functions of the local oscillator leakage tone and the image tone.