公开(公告)号：US10284084B2

公开(公告)日：2019-05-07

申请号：US15844598

申请日：2017-12-17

Applicant: RICHWAVE TECHNOLOGY CORP.

Inventor： Chih-Sheng Chen ,  Sheng-Tsung Wang

IPC: H02M3/156 ,  G05F1/565 ,  G05F1/575 ,  G05F1/46

Abstract: A power control circuit provides a supply voltage, and includes a voltage regulating circuit and a signal selecting circuit. The voltage regulating circuit is coupled to a power supply voltage and the output end of the power control circuit, and receives a first control signal for outputting the supply voltage. The signal selecting circuit has a first input end, a second input end and a third input end. The first input end of the signal selecting circuit receives a first input signal, the second input end of the signal selecting circuit receives a second input signal, and the third input end of the signal selecting circuit receives a second control signal. The first input signal is related to the power supply voltage. One of the first input signal and the second input signal is chosen and outputted as the first control signal according to the second control signal.

公开(公告)号：US20180329443A1

公开(公告)日：2018-11-15

申请号：US15810148

申请日：2017-11-13

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen ,  Tien-Yun Peng

IPC: G05F3/26 ,  H03F3/193 ,  H03F1/02

CPC classification number: G05F3/262 ,  H03F1/0205 ,  H03F1/223 ,  H03F3/193 ,  H03F3/195 ,  H03F2200/168 ,  H03F2200/18 ,  H03F2200/267 ,  H03F2200/301 ,  H03F2200/312 ,  H03F2200/451

Abstract: A current mirror device includes an input end for receiving an input signal, an output end for outputting an amplified signal of the input signal, first through third transistors, and an operational amplifier. The first transistor includes a first end coupled to first reference current and a second end coupled to a bias voltage. The control end of the second transistor is coupled to the input end. The third transistor includes a first end coupled to the output end, a second end coupled to the first end of the second transistor and a control end coupled to a reference voltage. The operational amplifier is configured to keep a first voltage and a second voltage at substantially the same level, wherein the first voltage is obtained on the first end of the first transistor and the second voltage is obtained on the first end of the second transistor. Therefore, the reference current flowing through the first transistor can be accurately amplified to a desired value and mirrored to become load current flowing through the second transistor.

公开(公告)号：US20180323780A1

公开(公告)日：2018-11-08

申请号：US15825116

申请日：2017-11-29

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen ,  Tien-Yun Peng

IPC: H03K17/22 ,  G05F1/46 ,  G05F3/18 ,  G05F3/26 ,  G11C5/14

CPC classification number: H03K17/22 ,  G05F1/468 ,  G05F3/18 ,  G05F3/26 ,  G11C5/145 ,  G11C5/147

Abstract: A bandgap reference circuit includes a voltage generation circuit, a capacitor and a clamping control circuit. The voltage generation circuit is used to generate a current on an operation terminal. The capacitor includes a first terminal coupled to the operation terminal, and a second terminal coupled to a first reference voltage terminal. The clamping control circuit is coupled between the operation terminal and a second reference voltage terminal. The clamping control circuit includes a switch and a clamping unit, and is used to allow part of the current flowing through the clamping unit to the second reference voltage terminal when the switch is turned on.

公开(公告)号：US20180294778A1

公开(公告)日：2018-10-11

申请号：US16008054

申请日：2018-06-14

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen ,  Chang-Yi Chen

IPC: H03F1/56 ,  H03F3/16

CPC classification number: H03F1/56 ,  H03F1/0277 ,  H03F1/223 ,  H03F3/16 ,  H03F3/193 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/387 ,  H03F2200/555 ,  H03F2203/7239

Abstract: An amplifier includes an input terminal for receiving an input signal, an output terminal for outputting an output signal, a first transistor, a second transistor having a first terminal coupled to a second terminal of the first transistor, a third transistor having a first terminal coupled to a second terminal of the second transistor, a capacitor coupled between a control terminal and a second terminal of the third transistor, a bias circuit coupled to the first terminal of the third transistor for providing a bias voltage to the third transistor, a fourth transistor having a first terminal coupled to the input terminal and a second terminal coupled to the output terminal for providing a bypass path, and a fifth transistor having a first terminal coupled to the first terminal of the first transistor and a second terminal coupled to the output terminal.

公开(公告)号：US20170279417A1

公开(公告)日：2017-09-28

申请号：US15469566

申请日：2017-03-26

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen ,  Chang-Yi Chen

IPC: H03F1/56 ,  H03F3/16

CPC classification number: H03F1/56 ,  H03F1/0277 ,  H03F1/223 ,  H03F3/16 ,  H03F3/193 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/387 ,  H03F2200/555 ,  H03F2203/7239

Abstract: An amplifier includes an input terminal for receiving an input signal, an output terminal for outputting an output signal, a first transistor, a second transistor having a first terminal coupled to a second terminal of the first transistor, a third transistor having a first terminal coupled to a second terminal of the second transistor, a capacitor coupled between a control terminal and a second terminal of the third transistor, a bias circuit coupled to the first terminal of the third transistor for providing a bias voltage to the third transistor, a fourth transistor having a first terminal coupled to the input terminal and a second terminal coupled to the output terminal for providing a bypass path, and a fifth transistor having a first terminal coupled to the first terminal of the first transistor and a second terminal coupled to the output terminal.

公开(公告)号：US20170272059A1

公开(公告)日：2017-09-21

申请号：US15201520

申请日：2016-07-04

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen ,  Ching-Wen Hsu ,  Chien-Yu Li

IPC: H03K3/012 ,  H03K17/16

CPC classification number: H03K3/012 ,  H03F1/223 ,  H03F1/565 ,  H03F3/193 ,  H03F3/72 ,  H03F2200/222 ,  H03F2200/451 ,  H03F2203/7233 ,  H03H11/28 ,  H03K17/16 ,  H04B1/18

Abstract: An active circuit includes an active element, an input unit, and a bypass unit. The active element is coupled to an output terminal of the active circuit for outputting an output signal. The input unit is coupled to an input terminal of the active circuit, and is coupled to an input terminal of the active element through a node. The input unit adjusts a capacitance value of the input unit according to a first control signal. The bypass unit is coupled to an output terminal of the input unit through the node, and is coupled to the output terminal of the active circuit. The bypass unit turns on or off a signal bypassing path according to a second control signal.

公开(公告)号：US09590500B2

公开(公告)日：2017-03-07

申请号：US14886343

申请日：2015-10-19

Applicant: Richwave Technology Corp.

Inventor： Chih-Sheng Chen ,  Tien-Yun Peng

IPC: H02M3/07 ,  H02M1/36

CPC classification number: H02M3/24 ,  H02M1/36 ,  H02M3/07 ,  H02M7/103 ,  H02M2003/075

Abstract: A voltage generator including an oscillator having an output, a charge pump having an input and an output, the input of the charge pump being coupled to the output of the oscillator, a smoothing capacitor, a resistor having an input end and an output end, wherein the input end is coupled to the charge pump and the output end is coupled to the smoothing capacitor, and a shorting element connected in parallel with the resistor and which, when turned on, causes the resistor to be at least partially bypassed, wherein the voltage generator is configured to supply voltage to a radio frequency (RF) switch via the smoothing capacitor, and a frequency of the oscillator is controlled to be faster during a switching period of the RF switch.

Abstract translation: 一种电压发生器，包括具有输出的振荡器，具有输入和输出的电荷泵，电荷泵的输入耦合到振荡器的输出，平滑电容器，具有输入端和输出端的电阻器， 其中所述输入端耦合到所述电荷泵，并且所述输出端耦合到所述平滑电容器，以及与所述电阻器并联连接的短路元件，并且当导通时使所述电阻器至少部分地被旁路，其中， 电压发生器被配置为通过平滑电容器向射频（RF）开关提供电压，并且在RF开关的开关周期期间将振荡器的频率控制得更快。

公开(公告)号：US09543929B2

公开(公告)日：2017-01-10

申请号：US14957610

申请日：2015-12-03

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen

IPC: H03K17/687 ,  H03K17/60 ,  G11C5/14 ,  H03K3/012 ,  H03K17/00 ,  H03K17/693

CPC classification number: H03K3/012 ,  H03K17/007 ,  H03K17/687 ,  H03K17/693

Abstract: An power voltage generating unit for a radio frequency switch includes a first input and a second input respectively configured to receive a first control signal and a second control signal, wherein the first control signal and the second control signal are configured to control which one of a plurality of paths in the radio frequency switch is enabled, and at least one output, configured to output an auxiliary voltage, derived from at least one of the first control signal or the second control signal, that is used to operate the radio frequency switch. The power voltage may be a voltage used to power an inverting circuit used to enable a selected branch as an isolation branch or shunt branch.

Abstract translation: 一种用于无线电频率开关的电源电压产生单元包括分别被配置为接收第一控制信号和第二控制信号的第一输入和第二输入，其中第一控制信号和第二控制信号被配置为控制第一控制信号和第二控制信号中的哪一个 射频切换中的多个路径被使能，并且至少一个输出被配置为输出从用于操作射频开关的第一控制信号或第二控制信号中的至少一个导出的辅助电压。 电源电压可以是用于对用于使所选择的分支作为隔离分支或分流支路的反相电路供电的电压。

公开(公告)号：US20160241236A1

公开(公告)日：2016-08-18

申请号：US15012859

申请日：2016-02-02

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen ,  Ching-Wen Hsu

IPC: H03K17/687

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：US20160087609A1

公开(公告)日：2016-03-24

申请号：US14957610

申请日：2015-12-03

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen

IPC: H03K3/012 ,  H03K17/687

CPC classification number: H03K3/012 ,  H03K17/007 ,  H03K17/687 ,  H03K17/693

Abstract: An power voltage generating unit for a radio frequency switch includes a first input and a second input respectively configured to receive a first control signal and a second control signal, wherein the first control signal and the second control signal are configured to control which one of a plurality of paths in the radio frequency switch is enabled, and at least one output, configured to output an auxiliary voltage, derived from at least one of the first control signal or the second control signal, that is used to operate the radio frequency switch. The power voltage may be a voltage used to power an inverting circuit used to enable a selected branch as an isolation branch or shunt branch.

Abstract translation: 一种用于无线电频率开关的电源电压产生单元包括分别被配置为接收第一控制信号和第二控制信号的第一输入和第二输入，其中第一控制信号和第二控制信号被配置为控制第一控制信号和第二控制信号中的哪一个 射频切换中的多个路径被使能，并且至少一个输出被配置为输出从用于操作射频开关的第一控制信号或第二控制信号中的至少一个导出的辅助电压。 电源电压可以是用于对用于使所选择的分支作为隔离分支或分流支路的反相电路供电的电压。