公开(公告)号：US09577631B2

公开(公告)日：2017-02-21

申请号：US15012859

申请日：2016-02-02

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen ,  Ching-Wen Hsu

IPC: H01P5/12 ,  H03K17/687 ,  H01P1/15 ,  H01P1/10

CPC classification number: H03K17/6871 ,  H01P1/10 ,  H01P1/15 ,  H03K17/693

Abstract: A single-pole multi-throw switch includes a set of selection switches. The set of selection switches includes a set of primary switches, a first set and a second set of secondary switches. The primary set of switches includes a plurality of primary transistors coupled in series for transmitting radio frequency signals. The first set of secondary switches is coupled to the primary set of switches and includes a plurality of first secondary transistors coupled in series for transmitting the radio frequency signals when the primary transistors and the first secondary transistors are turned on. The second set of secondary switches is coupled to the primary set of switches and includes a plurality of second secondary transistors coupled in series for transmitting the radio frequency signals when the primary transistors and the second secondary transistors are turned on.

Abstract translation: 单刀多掷开关包括一组选择开关。 选择开关组包括一组主开关，第一组和第二组二次开关。 主要的开关组包括串联耦合的多个主晶体管用于发射射频信号。 第一组次级开关耦合到初级开关组，并且包括串联耦合的多个第一次级晶体管，用于当主晶体管和第一二级晶体管导通时发射射频信号。 第二组次级开关耦合到初级开关组，并且包括串联耦合的多个第二次级晶体管，用于在主晶体管和第二次级晶体管导通时发射射频信号。

公开(公告)号：US08847668B2

公开(公告)日：2014-09-30

申请号：US13784835

申请日：2013-03-05

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen

IPC: H03K17/687

CPC classification number: H03K17/16 ,  H03K17/161

Abstract: An RF switch includes a transistor and a compensation capacitor circuit. The compensation capacitor circuit includes a first compensation capacitor and a second compensation capacitor of the same capacitance. The compensation capacitor circuit is used to improve voltage distribution between a control node and a first node of the transistor and between the control node and a second node of the transistor.

Abstract translation: RF开关包括晶体管和补偿电容器电路。 补偿电容电路包括具有相同电容的第一补偿电容器和第二补偿电容器。 补偿电容器电路用于改善控制节点和晶体管的第一节点之间以及控制节点和晶体管的第二节点之间的电压分布。

公开(公告)号：EP4411517A3

公开(公告)日：2024-10-30

申请号：EP24183427.4

申请日：2020-04-01

Applicant: RichWave Technology Corp.

Inventor： Chen, Tse-Peng

IPC: G01S13/88 ,  G01S13/50 ,  G01S13/56 ,  G01S13/524 ,  G01S13/536 ,  G06F3/01

Abstract: Method and apparatus for detecting motion of an object in an environment, the method including transmitting a first wireless signal related to a transmission signal and receiving a second wireless signal related to an incoming signal, wherein the second wireless signal is a reflected first wireless signal from the object, obtaining a modulation signal related to a combination of the transmission and incoming signals, wherein the modulation signal contains a Doppler shift caused by the motion of the object, extracting a signal envelope varied by the Doppler shift from the modulation signal, and determining whether motion of the object is detected in accordance with the signal envelope.

公开(公告)号：EP4170908A1

公开(公告)日：2023-04-26

申请号：EP22202791.4

申请日：2022-10-20

Applicant: RichWave Technology Corp.

Inventor： Chen, Chih-Sheng ,  Chu, Yu-Hsiang

IPC: H03K17/693 ,  H03K17/00 ,  H04B1/00

Abstract: A radio frequency switch (1, 10, 20) has an antenna end (110), a first signal end (110), a second signal end (120), a third signal end (130), a first series path (A1) having a first switch (M1), a second series path (A2) having a second switch (M2), a third series path (A3) having a third switch (M3), a first shunt path (B1) coupled between the first signal end (110) and a node (N1), a second shunt path (B2) coupled between the second signal end (120) and the node (N1), a common path (140) coupled between the node (N1) and a first reference voltage end (GND1), and a third shunt path (B3) coupled between the third signal end (130) and a second reference voltage end (GND2). The first series path (A1) and the second series path (A2) are connected to a common ground pad via the common path (140).

公开(公告)号：EP4099563A1

公开(公告)日：2022-12-07

申请号：EP21211548.9

申请日：2021-12-01

Applicant: RichWave Technology Corp.

Inventor： Peng, Tien-Yun ,  Chen, Chih-Sheng

IPC: H03F1/30 ,  H03F3/19 ,  H03G1/00

Abstract: A power amplifier (1) includes a transistor (T1), a temperature sensor (12) and a filter (14). The transistor (T1) is used to receive a bias signal (Sb) and amplify a radio frequency (RF) signal (Srfi). The temperature sensor (12) is arranged in proximity to the transistor (T1), and is used to detect a temperature of the transistor (T1) to provide a voltage signal (VTD) at a control node (N1) accordingly. The filter (14) is coupled to the temperature sensor (12) and is used to filter (14) the voltage signal (VTD) to generate a filtered voltage (Vf). The bias signal (Sb) is adjusted according to the filtered voltage (Vf).

公开(公告)号：EP4007163A1

公开(公告)日：2022-06-01

申请号：EP21210672.8

申请日：2021-11-26

Applicant: RichWave Technology Corp.

Inventor： Peng, Tien-Yun ,  Chen, Chih-Sheng

IPC: H03F1/30 ,  H03F3/19 ,  H03F3/345 ,  G05F3/26

Abstract: A bias circuit (100) for an RF amplifier (AMP) includes a current mirror circuit (110), an operational amplifier (120), and a bias generating circuit (130). The current mirror circuit (110) includes a reference branch circuit (112) and at least one mirror branch circuit (114). The reference branch circuit (112) generates a reference current (Iref) according to a base current (IB), and the at least one mirror branch circuit (114) generates at least one mirrored current (Im1) according to the reference current (Iref). The operational amplifier (120) receives a first voltage (V1) from the reference branch circuit (112) and a second voltage (V2) from the at least one mirror branch circuit (114), and adjusts the first voltage (V1) by generating a control voltage (Vctrl) according to the second voltage (V2). The bias generating circuit (130) generates a bias signal (Sbias) according to the at least one mirrored current (Im1).

公开(公告)号：EP3910792A1

公开(公告)日：2021-11-17

申请号：EP21170616.3

申请日：2021-04-27

Applicant: RichWave Technology Corp.

Inventor： Huang, Pin-Yi ,  Chen, Chih-Sheng ,  Hsu, Ching-Wen

IPC: H03F3/193 ,  H03F1/56 ,  H03F1/32 ,  H03F3/21 ,  H03F1/22 ,  H03G3/00 ,  H03G1/00 ,  H03F3/72

Abstract: An amplifier circuit (1) includes an input terminal (10) to receive an input signal (RFin), an output terminal (12) to output an output signal (RFout), an amplification unit (14), and a phase adjustment unit (161 to 167). The amplification unit (14) includes an input terminal (IN) coupled to the input terminal (10) of the amplifier circuit (1), an output terminal (OUT) coupled to the output terminal (12) of the amplifier circuit (1), a first terminal (T1) coupled to a first voltage terminal (VDD), and a second terminal (T2) coupled to a second voltage terminal (GND). The phase adjustment unit (161 to 167) is coupled to the amplification unit (14). The amplifier circuit (1) can be operated in a plurality of modes to provide respective gains. The phase of the output signal (RFout) is maintained within a predetermined range regardless of the mode the amplifier circuit (1) is operated in.

公开(公告)号：EP3809598A1

公开(公告)日：2021-04-21

申请号：EP20201664.8

申请日：2020-10-14

Applicant: RichWave Technology Corp.

Inventor： TSAI, Hsien-Huang ,  CHEN, Chih-Sheng

IPC: H04B1/04

Abstract: A radio frequency apparatus (200, 300, 400) and a voltage generating device (210, 310, 410) thereof are provided. The voltage generating device (210, 310, 410) includes a first switch (211, 311, 411) and a second switch (212, 312, 412). A first terminal of the first switch (211, 311, 411) receives a first voltage (Vcl). A control terminal of the first switch (211, 311, 411) receives a second voltage (Vc2). A first terminal of the second switch (212, 312, 412) receives the second voltage (Vc2). A control terminal of the second switch (212, 312, 412) receives the first voltage (Vcl). A second terminal of the second switch (212, 312, 412) and a second terminal of the first switch (211, 311, 411) are coupled to an output node (Nout2, Nout3, Nout4), wherein the output node (Nout2, Nout3, Nout4) outputs an output voltage (Vout2, Vout3, Vout4) related to at least one of the first voltage (Vcl) and the second voltage (Vc2).

公开(公告)号：EP3588126A1

公开(公告)日：2020-01-01

申请号：EP19182767.4

申请日：2019-06-27

Applicant: RichWave Technology Corp.

Inventor： Chi, Hsiang-Feng

IPC: G01S7/02 ,  G01S13/56

Abstract: Doppler signal processing device (100) detects an object (Obj) according to a received wireless signal (Sr). The Doppler signal processing device (100) includes a frequency analysis unit (110) for generating a frequency domain signal vector (X(n)) according to at least one digital signal (Sd), an interference suppression unit (120) for performing a suppression operation according to the frequency domain signal vector (X(n)) and a frequency domain interference estimation signal vector (U(n)) to generate an interference suppressed frequency domain signal vector (Y(n)), an interference estimation unit (130) for generating the frequency domain interference estimation signal vector (U(n)) according to the frequency domain signal vector (X(n)), a detection unit (140) for generating a result signal (S human_presence ) according to the interference suppressed frequency domain signal vector (Y(n)), an error detection unit (150) for optionally providing an error detection control signal (S negative_amplitude_detected ) to the interference estimation unit (130) to adjust a rate of updating the frequency domain interference estimation signal vector (U(n)).

公开(公告)号：EP3562034A1

公开(公告)日：2019-10-30

申请号：EP19170781.9

申请日：2019-04-24

Applicant: RichWave Technology Corp.

Inventor： CHENG, Ting-Yuan

IPC: H03F1/22 ,  H03F3/195 ,  H03F3/26

Abstract: An amplifier including a signal input terminal, a signal output terminal, a first and a second cascode amplifier circuits, a capacitor and a loading circuit. 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 an 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. 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 signal output terminal.