公开(公告)号：US20190334487A1

公开(公告)日：2019-10-31

申请号：US16134992

申请日：2018-09-19

Applicant: RichWave Technology Corp.

Inventor： Ting-Yuan Cheng

IPC: H03F3/193 ,  H03F3/21 ,  H03F3/45 ,  H03F1/32

Abstract: An amplifier including a signal input terminal, at least one signal output terminal, a first and a second cascode amplifier circuits, a capacitor and a loading circuit. The signal input terminal receives an input signal. The first cascode amplifier circuit includes a first and a second input terminals and a first and a second output terminals. The first input terminal coupled to the signal input terminal receives the input signal. The second cascode amplifier circuit includes a third and a fourth input terminals and a third output terminal. The third input terminal is coupled to the first output terminal, and the third output terminal is coupled to the second input terminal. Two terminals of the capacitor are coupled to the fourth input terminal and the first output terminal respectively. A terminal of the loading circuit is coupled to the third output terminal, and another terminal of the loading circuit is coupled to the second output terminal. At least one of two terminals of the loading circuit is further coupled to the at least one signal output terminal.

公开(公告)号：US11476812B2

公开(公告)日：2022-10-18

申请号：US17505638

申请日：2021-10-20

Applicant: RichWave Technology Corp.

Inventor： Ting-Yuan Cheng

IPC: G05F1/46 ,  G05F1/56 ,  H03K5/24 ,  H03F3/04 ,  H03K19/0175

Abstract: An amplifying apparatus includes a zero point generating circuit, a level shift circuit, a transistor, and an amplifying circuit. A first terminal of the zero point generating circuit is coupled to an output terminal of the amplifying apparatus. A first terminal of the level shift circuit is coupled to the output terminal of the amplifying apparatus. A first terminal of the transistor is coupled to a supply voltage. A second terminal of the transistor is coupled to the output terminal of the amplifying apparatus. A control terminal of the transistor is coupled to a second terminal of the level shift circuit. An input terminal of the amplifying circuit is coupled to an input terminal of the amplifying apparatus. An output terminal of the amplifying circuit is coupled to the output terminal of the amplifying apparatus.

公开(公告)号：US20210159859A1

公开(公告)日：2021-05-27

申请号：US17027728

申请日：2020-09-22

Applicant: RichWave Technology Corp.

Inventor： Ting-Yuan Cheng

IPC: H03F3/04 ,  H03K19/0175

Abstract: An amplifying apparatus and a voltage-to-current conversion apparatus are provided. The amplifying apparatus includes a zero point generating circuit, a level shift circuit, a transistor, and an amplifying circuit. A first terminal of the zero point generating circuit is coupled to an output terminal of the amplifying apparatus. A first terminal of the level shift circuit is coupled to the output terminal of the amplifying apparatus. A first terminal of the transistor is coupled to a supply voltage. A second terminal of the transistor is coupled to the output terminal of the amplifying apparatus. A control terminal of the transistor is coupled to a second terminal of the level shift circuit. An input terminal of the amplifying circuit is coupled to an input terminal of the amplifying apparatus. An output terminal of the amplifying circuit is coupled to the output terminal of the amplifying apparatus.

公开(公告)号：US10911026B2

公开(公告)日：2021-02-02

申请号：US16579877

申请日：2019-09-24

Applicant: RichWave Technology Corp.

Inventor： Ting-Yuan Cheng

IPC: H03B1/00 ,  H03K5/00 ,  H04B1/10 ,  H03H11/04 ,  H03D7/14 ,  H04B1/54 ,  H04L5/14

Abstract: A capacitor circuit includes a first terminal, a first to a third transistor and a first capacitor. The first transistor includes a first terminal configured to be coupled to a first current source and the first terminal of the capacitor circuit, and a second terminal coupled to a reference voltage terminal. The second transistor includes a first terminal configured to be coupled to a second current source, a second terminal coupled to the reference voltage terminal, and a control terminal coupled to the first terminal of the second transistor and a control terminal of the first transistor. The third transistor includes a first terminal configured to be coupled to a third current source and the first terminal of the first transistor, a second terminal coupled to the reference voltage terminal, and a control terminal coupled to the control terminal of the second transistor. The first capacitor includes a first terminal coupled to the first terminal of the capacitor circuit, and a second terminal coupled to the control terminal of the first transistor.

公开(公告)号：US10797648B2

公开(公告)日：2020-10-06

申请号：US16579870

申请日：2019-09-24

Applicant: RichWave Technology Corp.

Inventor： Ting-Yuan Cheng

IPC: H04B1/26 ,  H03D7/14 ,  H03D3/00 ,  H03G3/30 ,  H03H11/48

Abstract: A mixer module includes a mixer, at least one DC offset circuit, a filter and a controller. The mixer mixes an input signal to generate a first signal. The at least one DC offset circuit generates a second signal based on the first signal. The filter filters out an AC portion of the second signal and generates a third signal according to a DC portion of the second signal. The controller controls the at least one DC offset circuit based on the third signal to reduce a DC portion of the first signal.

公开(公告)号：US10771023B2

公开(公告)日：2020-09-08

申请号：US16134992

申请日：2018-09-19

Applicant: RichWave Technology Corp.

Inventor： Ting-Yuan Cheng

IPC: H03F3/04 ,  H03F3/193 ,  H03F1/32 ,  H03F3/21 ,  H03F3/45 ,  H03F1/22

Abstract: An amplifier including a signal input terminal, at least one signal output terminal, a first and a second cascode amplifier circuits, a capacitor and a loading circuit. The signal input terminal receives an input signal. The first cascode amplifier circuit includes a first and a second input terminals and a first and a second output terminals. The first input terminal coupled to the signal input terminal receives the input signal. The second cascode amplifier circuit includes a third and a fourth input terminals and a third output terminal. The third input terminal is coupled to the first output terminal, and the third output terminal is coupled to the second input terminal. Two terminals of the capacitor are coupled to the fourth input terminal and the first output terminal respectively. A terminal of the loading circuit is coupled to the third output terminal, and another terminal of the loading circuit is coupled to the second output terminal. At least one of two terminals of the loading circuit is further coupled to the at least one signal output terminal.

公开(公告)号：US11196393B2

公开(公告)日：2021-12-07

申请号：US17027728

申请日：2020-09-22

Applicant: RichWave Technology Corp.

Inventor： Ting-Yuan Cheng

IPC: G05F1/46 ,  G05F1/56 ,  H03K5/24 ,  H03F3/04 ,  H03K19/0175

Abstract: An amplifying apparatus and a voltage-to-current conversion apparatus are provided. The amplifying apparatus includes a zero point generating circuit, a level shift circuit, a transistor, and an amplifying circuit. A first terminal of the zero point generating circuit is coupled to an output terminal of the amplifying apparatus. A first terminal of the level shift circuit is coupled to the output terminal of the amplifying apparatus. A first terminal of the transistor is coupled to a supply voltage. A second terminal of the transistor is coupled to the output terminal of the amplifying apparatus. A control terminal of the transistor is coupled to a second terminal of the level shift circuit. An input terminal of the amplifying circuit is coupled to an input terminal of the amplifying apparatus. An output terminal of the amplifying circuit is coupled to the output terminal of the amplifying apparatus.

公开(公告)号：US20200186129A1

公开(公告)日：2020-06-11

申请号：US16579877

申请日：2019-09-24

Applicant: RichWave Technology Corp.

Inventor： Ting-Yuan Cheng

IPC: H03H11/04 ,  H03D7/14

Abstract: A capacitor circuit includes a first terminal, a first to a third transistor and a first capacitor. The first transistor includes a first terminal configured to be coupled to a first current source and the first terminal of the capacitor circuit, and a second terminal coupled to a reference voltage terminal. The second transistor includes a first terminal configured to be coupled to a second current source, a second terminal coupled to the reference voltage terminal, and a control terminal coupled to the first terminal of the second transistor and a control terminal of the first transistor. The third transistor includes a first terminal configured to be coupled to a third current source and the first terminal of the first transistor, a second terminal coupled to the reference voltage terminal, and a control terminal coupled to the control terminal of the second transistor. The first capacitor includes a first terminal coupled to the first terminal of the capacitor circuit, and a second terminal coupled to the control terminal of the first transistor.

公开(公告)号：US20200186088A1

公开(公告)日：2020-06-11

申请号：US16579870

申请日：2019-09-24

Applicant: RichWave Technology Corp.

Inventor： Ting-Yuan Cheng

IPC: H03D7/14 ,  H03H11/48 ,  H03D3/00 ,  H03G3/30

Abstract: A mixer module includes a mixer, at least one DC offset circuit, a filter and a controller. The mixer mixes an input signal to generate a first signal. The at least one DC offset circuit generates a second signal based on the first signal. The filter filters out an AC portion of the second signal and generates a third signal according to a DC portion of the second signal. The controller controls the at least one DC offset circuit based on the third signal to reduce a DC portion of the first signal.

公开(公告)号：US09692464B1

公开(公告)日：2017-06-27

申请号：US15164830

申请日：2016-05-25

Applicant: RichWave Technology Corp.

Inventor： Ting-Yuan Cheng ,  Da-Cheng Peng ,  Zhuo Fu ,  Hwey-Ching Chien

IPC: H04L25/03 ,  H04B1/04 ,  H04L27/20 ,  H04L27/152

CPC classification number: H04B1/0475 ,  H04L27/152 ,  H04L27/20

Abstract: A signal transmitter includes a modulation circuit, a signal separation circuit, and a signal combining circuit. The modulation circuit modulates a first signal to a modulated signal. The signal separation circuit separates the modulated signal into N separated signals. The N separated signals have different phases. The signal combining circuit combines the N separated signals to eliminate at least one order of harmonic signals of the N separated signals so as to generate an output signal.