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公开(公告)号：US20210119651A1
公开(公告)日：2021-04-22
申请号：US16997955
申请日：2020-08-20
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Hsien-Huang Tsai
Abstract: A radio frequency device and a voltage generating device thereof are provided. The voltage generating device includes a first transistor, a second transistor, and a voltage dividing circuit. A first terminal of the first transistor receives a first voltage. A first terminal of the second transistor receives a second voltage. A first connection terminal and a second connection terminal of the voltage dividing circuit are respectively coupled to second terminals of the first transistor and the second transistor. The voltage dividing circuit generates a first divided voltage and a second divided voltage. The first divided voltage is used as an output voltage of the voltage generating device. The second divided voltage is output as a control voltage to a control terminal of the first transistor and a control terminal of the second transistor.
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公开(公告)号：US10862435B2
公开(公告)日：2020-12-08
申请号：US16293666
申请日：2019-03-06
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Hung-Chia Lo , Tien-Yun Peng
Abstract: An impedance circuit includes a first impedance terminal, a second impedance terminal, a first transistor, a second transistor, a low frequency signal blocking element, and a current-voltage transform circuit. The first transistor is coupled to the first impedance terminal, and controlled by a first voltage. The second transistor is coupled to the first impedance terminal, and controlled by a second voltage. The low frequency signal blocking element is coupled to the first transistor and the second impedance terminal. The current-voltage transform circuit is coupled to the first impedance terminal. The current-voltage transform circuit adjusts a terminal voltage at the first terminal of the current-voltage transform circuit according to a current flowing through the current-voltage transform circuit. The impedance circuit provides impedance between the first and the second impedance terminals according to the terminal voltage and the first voltage.
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公开(公告)号：US20200295791A1
公开(公告)日：2020-09-17
申请号：US16541164
申请日：2019-08-15
Applicant: RichWave Technology Corp.
Inventor： Lu-Hung Liao
IPC: H04B1/04
Abstract: A signal processing device includes a signal input, a signal output, a first amplifier, a second amplifier, a first distortion adjustment circuit, and a second distortion adjustment circuit. The signal input receives a RF signal to be amplified. The signal output outputs an amplified RF signal. Each of the first and second amplifiers includes an input coupled to the signal input and an output coupled to the signal output. The first distortion adjustment circuit includes a connection coupled to the input of the first amplifier. The second distortion adjustment circuit includes a connection coupled to the input of the second amplifier. The number of transistors in the first amplifier is different from the number of transistors in the second amplifier.
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公开(公告)号：US10673444B2
公开(公告)日：2020-06-02
申请号：US16395183
申请日：2019-04-25
Applicant: RichWave Technology Corp.
Inventor： Hsiang-Feng Chi
Abstract: A moving object detection circuit for detecting movement information of a measured object. The moving object detection circuit includes a mixing circuit, an analog-to-digital conversion circuit, a mixing unit, and a distance detecting unit. The mixing circuit mixed the RF carrier signal and a first analog signal to generate a second analog signal. The first analog signal is generated by a signal reflected from the measured object. The analog-to-digital conversion circuit coupled to the mixing circuit for generating a digital signal according to the second analog signal. The mixing unit mixed an IF signal and a first/second IF carrier signal to generate a first/second signal. The distance detecting unit generated a detection result according to the first signal and the second signal. The detection result is corresponding to a distance between the measured object and the moving object detection circuit.
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公开(公告)号：US10551864B2
公开(公告)日：2020-02-04
申请号：US16170060
申请日：2018-10-25
Applicant: RichWave Technology Corp.
Inventor： Che-Sheng Chen , Shun-Nan Tai
Abstract: A bandgap voltage reference circuit configured to generate a bandgap reference voltage is provided. The bandgap voltage reference circuit includes a bandgap current generating circuit, a differential pair circuit and a flipped voltage follower. The bandgap current generating circuit converts the bandgap reference voltage into a bandgap current and generates a first voltage and a second voltage according to the bandgap current. The differential pair circuit is coupled to the bandgap current generating circuit to receive the first voltage and the second voltage and configured to reduce a voltage difference between the first voltage and the second voltage and generate a third voltage. The flipped voltage follower is coupled to the differential pair circuit to receive the third voltage and generates the bandgap reference voltage accordingly.
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Patent Agency Ranking
公开(公告)号：US10530536B2
公开(公告)日：2020-01-07
申请号：US15958497
申请日：2018-04-20
Applicant: RICHWAVE TECHNOLOGY CORP.
Inventor： Han-Tung Hsu , Wen-Cheng Chan
Abstract: The disclosure is related to an RF signal processing apparatus. The apparatus includes a processor and a buffer memory circuit. The apparatus includes a host interface for connecting with a host and an RF circuit for transmitting and receiving RF signals. The processor processes the RF signals to or from the RF circuit. The processor converts the received RF signals into data, or converts the data into the RF signals to be transmitted. The buffer memory circuit has a controller and two buffer memories. This memory architecture allows a system to assign a task to a first buffer memory and another task to a second buffer memory without restricting that the conventional buffer memory is limited to doing one task at a time. This memory architecture can solve inefficiency problems due to insufficient data transmission since the conventional buffer memory cannot be filled within a limited time period.
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公开(公告)号：US10416696B2
公开(公告)日：2019-09-17
申请号：US16191355
申请日：2018-11-14
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng
Abstract: A power supply device includes an input terminal, a regulated voltage output terminal, a switch, a first transistor, and a current split circuit. The input terminal receives a first control voltage. The regulated voltage output terminal outputs an output voltage. The switch has a first terminal coupled to the input terminal, a second terminal, and a control terminal. The first transistor has a first terminal coupled to a voltage terminal, a second terminal coupled to the regulated voltage output terminal, and a control terminal coupled to the second terminal of the switch. The current split circuit is coupled to the voltage terminal and the regulated voltage output terminal. The current split circuit receives the first control voltage or a second control voltage, and includes a second transistor coupled between the voltage terminal and the regulated voltage output terminal.
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公开(公告)号：US10353421B2
公开(公告)日：2019-07-16
申请号：US15810148
申请日：2017-11-13
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng
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.
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公开(公告)号：US09438302B2
公开(公告)日：2016-09-06
申请号：US14636189
申请日：2015-03-03
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen
CPC classification number: H04B1/44 , H04B1/525 , H04W52/0274 , Y02D70/40
Abstract: A radio frequency (RF) switching module and a control method of the RF switching module are described. The RF switching module has 2 switches, and the control method includes starting to turn off a first switch of the RF switching module, starting to turn on a second switch of the RF switching module after the first switch is turned off for a first predetermined time, wherein starting to turn off the first switch and starting to turn on the second switch is finished during a transition period from a first mode to a second mode.
Abstract translation: 描述射频（RF）切换模块和RF切换模块的控制方法。 RF开关模块具有2个开关，控制方法包括开始关闭RF开关模块的第一开关，在第一开关断开第一预定时间之后开始接通RF开关模块的第二开关 其中开始关闭第一开关并开始接通第二开关，在从第一模式到第二模式的转变期间结束。
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40.发明授权公开(公告)号：US09231578B2
公开(公告)日：2016-01-05
申请号：US13345022
申请日：2012-01-06
Applicant: Chen Chih-Sheng
Inventor： Chen Chih-Sheng
IPC: H03K17/687 , H03K17/60 , G11C5/14 , H03K17/00 , H03K17/693
CPC classification number: H03K17/007 , H03K17/693
Abstract: An auxiliary 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 auxiliary voltage may be a bias voltage and/or a voltage used to power an inverter 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辅助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端和第二输入端，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。 辅助电压可以是用于给逆变器供电的偏压和/或电压，所述逆变器用于使所选择的分支作为隔离分支或分流支路。
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