公开(公告)号：US11703532B2

公开(公告)日：2023-07-18

申请号：US17495825

申请日：2021-10-07

Applicant: RichWave Technology Corp.

Inventor： Po-Wei Wu ,  Hsiang-Jen Jao ,  Chih-Sheng Chen ,  Tien-Yun Peng

IPC: G01R29/00 ,  G01R29/027

CPC classification number: G01R29/0273

Abstract: A device of measuring a duty cycle includes a resistor-capacitor circuit and a control circuit. The resistor-capacitor circuit is used to generate a first voltage when a reference signal is in a first state, and generate a second voltage and a third voltage when the reference signal is in a second state. The control circuit is coupled to the resistor-capacitor circuit, and configured to acquire an ON-time according to the first voltage, the second voltage and the third voltage. The ON-time is a time interval during which the reference signal is in the first state.

公开(公告)号：US20230060339A1

公开(公告)日：2023-03-02

申请号：US17495825

申请日：2021-10-07

Applicant: RichWave Technology Corp.

Inventor： Po-Wei Wu ,  Hsiang-Jen Jao ,  Chih-Sheng Chen ,  Tien-Yun Peng

IPC: G01R29/027

Abstract: A device of measuring a duty cycle includes a resistor-capacitor circuit and a control circuit. The resistor-capacitor circuit is used to generate a first voltage when a reference signal is in a first state, and generate a second voltage and a third voltage when the reference signal is in a second state. The control circuit is coupled to the resistor-capacitor circuit, and configured to acquire an ON-time according to the first voltage, the second voltage and the third voltage. The ON-time is a time interval during which the reference signal is in the first state.

公开(公告)号：US12063029B2

公开(公告)日：2024-08-13

申请号：US18219068

申请日：2023-07-06

Applicant: RichWave Technology Corp.

Inventor： Hsiang-Jen Jao ,  Tien-Yun Peng ,  Chih-Sheng Chen

IPC: H03K17/0412

CPC classification number: H03K17/04123

Abstract: A switch device includes a first radio-frequency (RF) terminal, a second RF terminal, a first transistor, a second transistor, and a variable resistance element. The first transistor includes a first terminal coupled to the first RF terminal, a second terminal, and a control terminal coupled to a control signal terminal providing a control signal. The second transistor includes a first terminal coupled to the second terminal of the first transistor, a second terminal coupled to the second RF terminal, and a control terminal. The variable resistance element is coupled between the second terminal of the first transistor and a bias voltage terminal. When the first transistor and the second transistor are in a transient state, the variable resistance element provides a lower resistance. When the first transistor and the second transistor are in an ON state, the variable resistance element provides a higher resistance.

公开(公告)号：US20230296655A1

公开(公告)日：2023-09-21

申请号：US18202961

申请日：2023-05-29

Applicant: RichWave Technology Corp.

Inventor： Po-Wei Wu ,  Hsiang-Jen Jao ,  Chih-Sheng Chen ,  Tien-Yun Peng

IPC: G01R29/027

CPC classification number: G01R29/0273

Abstract: A compensation circuit includes a resistor-capacitor circuit and a control circuit. The resistor-capacitor circuit is used to generate a first voltage when a reference signal is in a first state, and generate a second voltage and a third voltage when the reference signal is in a second state. The resistor-capacitor circuit includes a first resistor-capacitor sub-circuit and a second resistor-capacitor sub-circuit. The first resistor-capacitor sub-circuit and the second resistor-capacitor sub-circuit are coupled to the control circuit, and operate simultaneously to compute an ON time of a front end module. The control circuit is coupled to the resistor-capacitor circuit, and is used to acquire the ON time according to the first voltage, the second voltage, and the third voltage, and includes an adjustment circuit used to generate a bias signal according to the ON time, and output the bias signal to the front end module.

公开(公告)号：US20230361765A1

公开(公告)日：2023-11-09

申请号：US18219068

申请日：2023-07-06

Applicant: RichWave Technology Corp.

Inventor： Hsiang-Jen Jao ,  Tien-Yun Peng ,  Chih-Sheng Chen

IPC: H03K17/0412

CPC classification number: H03K17/04123

Abstract: A switch device includes a first radio-frequency (RF) terminal, a second RF terminal, a first transistor, a second transistor, and a variable resistance element. The first transistor includes a first terminal coupled to the first RF terminal, a second terminal, and a control terminal coupled to a control signal terminal providing a control signal. The second transistor includes a first terminal coupled to the second terminal of the first transistor, a second terminal coupled to the second RF terminal, and a control terminal. The variable resistance element is coupled between the second terminal of the first transistor and a bias voltage terminal. When the first transistor and the second transistor are in a transient state, the variable resistance element provides a lower resistance. When the first transistor and the second transistor are in an ON state, the variable resistance element provides a higher resistance.

公开(公告)号：US11742845B2

公开(公告)日：2023-08-29

申请号：US17565475

申请日：2021-12-30

Applicant: RichWave Technology Corp.

Inventor： Hsiang-Jen Jao ,  Tien-Yun Peng ,  Chih-Sheng Chen

IPC: H03K17/0412

CPC classification number: H03K17/04123

Abstract: A switch device includes a first radio-frequency (RF) terminal, a second RF terminal, a first transistor, a second transistor, and a variable resistance element. The first transistor includes a first terminal coupled to the first RF terminal, a second terminal, and a control terminal coupled to a control signal terminal providing a control signal. The second transistor includes a first terminal coupled to the second terminal of the first transistor, a second terminal coupled to the second RF terminal, and a control terminal. The variable resistance element is coupled between the second terminal of the first transistor and a bias voltage terminal. When the first transistor and the second transistor are in a transient state, the variable resistance element provides a lower resistance. When the first transistor and the second transistor are in an ON state, the variable resistance element provides a higher resistance.

公开(公告)号：US20230179194A1

公开(公告)日：2023-06-08

申请号：US17565475

申请日：2021-12-30

Applicant: RichWave Technology Corp.

Inventor： Hsiang-Jen Jao ,  Tien-Yun Peng ,  Chih-Sheng Chen

IPC: H03K17/0412

CPC classification number: H03K17/04123

Abstract: A switch device includes a first radio-frequency (RF) terminal, a second RF terminal, a first transistor, a second transistor, and a variable resistance element. The first transistor includes a first terminal coupled to the first RF terminal, a second terminal, and a control terminal coupled to a control signal terminal providing a control signal. The second transistor includes a first terminal coupled to the second terminal of the first transistor, a second terminal coupled to the second RF terminal, and a control terminal. The variable resistance element is coupled between the second terminal of the first transistor and a bias voltage terminal. When the first transistor and the second transistor are in a transient state, the variable resistance element provides a lower resistance. When the first transistor and the second transistor are in an ON state, the variable resistance element provides a higher resistance.