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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
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。
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公开(公告)号：US20250132741A1
公开(公告)日：2025-04-24
申请号：US18389719
申请日：2023-12-19
Applicant: RichWave Technology Corp
Inventor： Tien-Yun Peng , Chih-Sheng Chen
IPC: H03F3/45
Abstract: An amplification circuit includes an amplifier, a first mirror-branch circuit, a second mirror-branch circuit, a first variable current source, a second variable current source, and an operation amplifier. The amplifier can receive an operation current and an input signal, and output the amplified input signal. The first mirror-branch circuit and the second mirror-branch circuit are coupled to the amplifier. The first variable current source is coupled to the first mirror-branch circuit and provides a first reference current. The second variable current source is coupled to the second mirror-branch circuit and provides a second reference current. The operation amplifier is coupled to the first mirror-branch circuit, the second mirror-branch circuit and the amplifier. The first reference current and the second reference current are related to the operation current.
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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.
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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.
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公开(公告)号：US20230194574A1
公开(公告)日：2023-06-22
申请号：US18110865
申请日：2023-02-16
Applicant: RichWave Technology Corp.
Inventor： Tien-Yun Peng , Hsien-Huang Tsai , Chih-Sheng Chen
CPC classification number: G01R19/0046 , H03K19/20
Abstract: A voltage state detector includes a voltage drop circuit, a pull-down circuit, a load circuit, a transistor, a pull-up circuit, first and second output terminals, and a logic circuit. The pull-down circuit is coupled to the voltage drop circuit. The transistor has a first terminal coupled to the load circuit, a second terminal coupled to the pull-down circuit, and a control terminal coupled to the voltage drop circuit. The pull-up circuit is coupled to the load circuit and the voltage drop circuit. The first output terminal is coupled to the first terminal of the transistor for outputting a first state determination signal. The second output terminal is coupled to the voltage drop circuit for outputting a second state determination signal. The logic circuit includes a NOR gate for performing an NOR operation on the first state determination signal and the second state determination signal to output a control signal.
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Patent Agency Ranking
46.发明授权公开(公告)号：US11569784B2
公开(公告)日：2023-01-31
申请号：US17356467
申请日：2021-06-23
Applicant: RichWave Technology Corp.
Inventor： Tien-Yun Peng , Chih-Sheng Chen
Abstract: A power amplifier includes a transistor, a temperature sensor and a filter. The transistor is used to receive a bias signal and amplify a radio frequency (RF) signal. The temperature sensor is arranged in proximity to the transistor, and is used to detect a temperature of the transistor to provide a voltage signal at a control node accordingly. The filter is coupled to the temperature sensor and is used to filter the voltage signal to generate a filtered voltage. The bias signal is adjusted according to the filtered voltage.
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公开(公告)号：US11539332B2
公开(公告)日：2022-12-27
申请号：US17140135
申请日：2021-01-04
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng
Abstract: An amplification circuit includes a switch circuit, an amplifier, and a control circuit. The switch circuit has a first terminal coupled to a radio frequency signal input terminal or a system voltage terminal, a second terminal coupled to an input terminal of the amplifier, and a control terminal configured to receive a control signal. The amplifier amplifies a radio frequency signal. The control circuit generates the control signal according to a driving current generated by the amplifier. When the control circuit determines that the amplifier operates in a high power mode, the control circuit controls the control signal to adjust a conducting level between the first terminal and the second terminal of the switch circuit according to the intensity of the driving current.
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公开(公告)号：US11536614B2
公开(公告)日：2022-12-27
申请号：US17246734
申请日：2021-05-03
Applicant: RichWave Technology Corp.
Inventor： Po-Wei Wu , Tien-Yun Peng , Chih-Sheng Chen
Abstract: A temperature detector is used to detect a temperature of a circuit under test, and includes a temperature coefficient component, a multiplier, an impedance component and a node. The temperature coefficient component is arranged in proximity to the circuit under test. A control terminal of the multiplier is coupled to a second terminal of the temperature coefficient component. The impedance component is coupled between the second terminal of the temperature coefficient component and the control terminal of the multiplier, or between a second terminal of the multiplier and a third voltage terminal. The node is formed between the second terminal of the temperature coefficient component and the control terminal of the multiplier. A voltage at the node and an amplified detection current flowing to a first terminal of the multiplier are positively correlated to the temperature of the circuit under test.
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公开(公告)号：US20220350359A1
公开(公告)日：2022-11-03
申请号：US17392205
申请日：2021-08-02
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng
Abstract: The present invention discloses a bias compensation circuit. The bias compensation circuit includes a detecting circuit, including a diode-connected transistor circuit, with a first end for receiving a first current, and a second end coupled to a first reference voltage end; and a first diode circuit, with a first end for receiving a second current, and a second end coupled to the first reference voltage end; wherein the detecting circuit provides a first voltage level according to the diode-connected transistor circuit, and provides a second voltage level according to the first diode circuit; a voltage-current converting circuit, coupled to the detecting circuit, for generating a first reference current according to the first voltage level and the second voltage level; and a bias circuit, coupled to the voltage-current converting circuit, for receiving the first reference current, to provide a bias voltage level according to the first reference current.
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公开(公告)号：US20200169258A1
公开(公告)日：2020-05-28
申请号：US16691503
申请日：2019-11-21
Applicant: RichWave Technology Corp.
Inventor： Tien-Yun Peng , Chih-Sheng Chen
IPC: H03K19/0185 , H03K3/037
Abstract: A driving apparatus is provided. A first stage inverter circuit and a second stage inverter circuit respectively generate a first output signal and a second output signal according to a first voltage dividing control signal and a second voltage dividing control signal, wherein the first output signal and the second output signal are respectively output to the second-stage inverter circuit and the first-stage inverter circuit to appropriately control the gate voltages of transistors of pull-up circuit and the pull-down circuit in the first-stage inverter circuit and the second-stage inverter circuit, so that source-drain voltages differences of the transistors can be more evenly distributed.
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