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公开(公告)号：US11677361B2
公开(公告)日：2023-06-13
申请号：US17143160
申请日：2021-01-07
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Ching Wen Hsu
CPC classification number: H03F3/19 , H03F2200/129 , H03F2200/372 , H03F2200/451 , H04B1/40
Abstract: The invention provides a radio frequency (RF) amplifier apparatus including an amplifier and a resonance circuit. An input terminal of the amplifier receives an RF signal. The amplifier amplifies a first frequency component of the RF signal and outputs the amplified first frequency component to an output terminal of the amplifier. A first terminal and a second terminal of the resonance circuit are respectively coupled to the input terminal and the output terminal of the amplifier. The resonance circuit provides a low impedance path for a second frequency component of the RF signal between the input terminal and the output terminal of the amplifier, and provides a high impedance path for the first frequency component of the RF signal between the input terminal and the output terminal of the amplifier.
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162.发明授权公开(公告)号：US11656321B2
公开(公告)日：2023-05-23
申请号：US16453984
申请日：2019-06-26
Applicant: RichWave Technology Corp.
Inventor： Tse-Peng Chen
CPC classification number: G01S7/023 , G01S7/0232 , G01S13/56
Abstract: A method of microwave motion detection with adaptive frequency control, for a microwave motion sensor, comprises suppressing output of the first detecting signal generated with a first frequency, determining whether a first interference signal is detected in the first frequency during the suppressing, responsive to that the first interference signal is detected in the first frequency, generating a second detecting signal with a second frequency, which is different from the first frequency, and suppressing output of the second detecting signal, determining whether a second interference signal is detected in the second frequency during the suppressing, and responsive to that the second interference signal is not detected in the second frequency, outputting the second detecting signal for motion detection. The microwave motion sensor is operated in a normal mode or in a detection mode according to the first detecting signal, a reflected signal, the second detecting signal and an interference signal.
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公开(公告)号：US11646712B2
公开(公告)日：2023-05-09
申请号：US17692132
申请日：2022-03-10
Applicant: RichWave Technology Corp.
Inventor： Tsyr Shyang Liou
CPC classification number: H03H9/02023 , H03H9/131
Abstract: A bulk acoustic wave (BAW) structure includes a single crystal piezoelectric material layer, a first electrode, a second electrode and an acoustic reflector. The first and second electrodes are respectively located on a first surface and a second surface of the single crystal piezoelectric material layer. The area of the second electrode is greater than or equal to that of the second surface of the single crystal piezoelectric material layer, and the contact area of the single crystal piezoelectric material layer with the second electrode is equal to the area of the second surface of the single crystal piezoelectric material layer. The acoustic reflector is disposed on a surface of the first electrode.
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公开(公告)号：US20230031137A1
公开(公告)日：2023-02-02
申请号：US17499831
申请日：2021-10-12
Applicant: RICHWAVE TECHNOLOGY CORP.
Inventor： CHIH-SHENG CHEN , Ching-Wen Hsu
Abstract: An amplifier circuit having an adjustable gain is provided. The amplifier circuit includes an input terminal, an output terminal, an amplifier, and an attenuation circuit. The input terminal receives an input signal, which is in turn received by an input terminal of the amplifier. An output terminal of the amplifier outputs the input signal that is amplified. The attenuation circuit is coupled between the output terminal of the amplifier and the output terminal to provide a plurality of attenuation to the input signal that is amplified and generate a first attenuation signal, or between the input terminal and the output terminal to provide the plurality of attenuations to the input signal and generate a second attenuation signal. A difference between an impedance value of the input terminal of the attenuation circuit and an impedance value of the output terminal of the attenuation circuit is within a predetermined range.
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165.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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Patent Agency Ranking
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：US20220376661A1
公开(公告)日：2022-11-24
申请号：US17749157
申请日：2022-05-20
Applicant: RichWave Technology Corp.
Inventor： Kuang-Lieh Wan
Abstract: An amplification device includes an amplification unit, an impedance unit and a log power detector. The amplification unit includes an input terminal for receiving a radio-frequency signal, an output terminal for outputting an amplified radio-frequency signal, and a detected terminal for outputting a detected signal related to the radio-frequency signal. The impedance unit is used to provide an impedance. The impedance unit includes an input terminal coupled to the detected terminal of the amplification unit for receiving the detected signal, and an output terminal for outputting a power signal. The log power detector is used to generate a power indication signal according to the power signal. The log power detector includes an input terminal coupled to the output terminal of the impedance unit, and an output terminal for outputting the power indication signal.
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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：US11476816B2
公开(公告)日：2022-10-18
申请号：US17128212
申请日：2020-12-21
Applicant: RichWave Technology Corp.
Inventor： Yu-Chun Donald Lie , Chuan-Chen Chao
Abstract: An amplifier device and a duplexer circuit are provided. The amplifier device includes a first differential amplifier circuit and a controller. The first differential amplifier circuit includes first and second radio frequency (RF) input terminals, first and second transistors, first and second adjustable capacitor circuits, and first and second RF output terminals. The controller adjusts capacitance values of the first adjustable capacitor circuit of the first differential amplifier circuit and the second adjustable capacitor circuit of the first differential amplifier circuit according to at least one of a characteristic related to a first RF input signal of the first differential amplifier circuit, a characteristic related to the second RF input signal of the first differential amplifier circuit, a matching deviation between the first transistor and the second transistor of the first differential amplifier circuit, and a characteristic of the amplifier device.
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