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公开(公告)号：US20220163573A1
公开(公告)日：2022-05-26
申请号：US17138785
申请日：2020-12-30
Applicant: RichWave Technology Corp.
Inventor： Tien-Yun Peng , Hsien-Huang Tsai , Chih-Sheng Chen
Abstract: A voltage state detector includes an input terminal, a voltage drop circuit, a pull-down circuit, a load circuit, a transistor, a pull-up circuit, a first output terminal, and a second output terminal. The voltage drop circuit is coupled to the input terminal. The pull-down circuit is coupled to the voltage drop circuit and a first reference terminal. The load circuit is coupled to a second reference terminal. The transistor has a first terminal coupled to the load circuit, a second terminal coupled to the first reference terminal, and a control terminal coupled to the voltage drop circuit. The pull-up circuit is coupled to the second reference terminal 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.
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公开(公告)号：US20220140793A1
公开(公告)日：2022-05-05
申请号：US17143160
申请日：2021-01-07
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Ching Wen Hsu
IPC: H03F3/19
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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公开(公告)号：US11316475B1
公开(公告)日：2022-04-26
申请号：US17372557
申请日：2021-07-12
Applicant: RichWave Technology Corp.
Inventor： Po-Chih Ku , Tse-Peng Chen
IPC: H03D7/14
Abstract: A mixer circuit including a mixer, a voltage divider circuit, and an amplifier, is provided. The mixer receives a first input signal, a second input signal, and at least one set of bias voltages, and generates an output signal. A frequency of the output signal is related to a frequency of the first input signal and a frequency of the second input signal. The voltage divider circuit receives the bias voltages and generates a common mode signal at an output end. The amplifier is coupled to the mixer to receive the output signal, and is coupled to the output end of the voltage divider circuit and configured to suppress noise in the output signal, and generate a final output signal.
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公开(公告)号：US20220120850A1
公开(公告)日：2022-04-21
申请号：US17561653
申请日：2021-12-23
Applicant: RichWave Technology Corp.
Inventor： Chiang-Hua Yeh , Hsiang-Feng Chi
Abstract: A radar apparatus and a leakage correction method thereof are provided. The radar apparatus includes a transmitter and a receiver. The transmitter includes a sinewave signal generator. The sinewave signal generator generates a sinewave signal. The receiver includes another sinewave signal generator and a correcting circuit. The receiver receives transmitting signals including the sinewave signal from the transmitter. The sinewave signal generator of the receiver generates another sinewave signal according to the amplitude of the transmitting signals or received transmitting signals. The correcting circuit corrects leakage situation on the received transmitting signals according to another sinewave signal. The phasor of sinewave form corresponding to the leakage situation relates to the phasor of another sinewave signal.
Accordingly, the performance of receiver may be improved effectively.-
公开(公告)号：US20220115994A1
公开(公告)日：2022-04-14
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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Patent Agency Ranking
公开(公告)号：US11290136B2
公开(公告)日：2022-03-29
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：US11187784B2
公开(公告)日：2021-11-30
申请号：US16368878
申请日：2019-03-29
Applicant: RichWave Technology Corp.
Inventor： Hsiang-Feng Chi
IPC: G01S7/35 , G01S13/56 , G01S13/536
Abstract: A phase information extraction circuit includes a first mixer circuit for generating a second analog signal by mixing a carrier signal with a first analog signal generated by a transmitted signal reflected by the object, an analog-to-digital converter (ADC) coupled to the first mixer circuit for generating a first digital signal according to the second analog signal, an in-phase quadrature (I/Q) signal generator coupled to the ADC for generating a digital I signal and a digital Q signal according to the first digital signal, and a first phase acquisition unit for extracting phase information according to the digital I signal and the digital Q signal.
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公开(公告)号：US11165249B2
公开(公告)日：2021-11-02
申请号：US16515015
申请日：2019-07-17
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tsung-Han Lee , Chuan-Chen Chao
IPC: H02H9/04 , H02M7/48 , H05K1/02 , H03K17/693
Abstract: A signal switching apparatus includes a signal control switch, a switch circuit, a blocking capacitor and a surge current dissipating circuit. The signal control switch coupled between a first signal transceiving end and a second signal transceiving end is turned on or turned off according to a first control signal. The switch circuit having at least one first transistor is controlled by a second control signal to be turned on or off, and a first end of the switch circuit is coupled to the first signal transceiving end. The blocking capacitor is coupled between a second end of the switch circuit and a reference voltage terminal. The surge current dissipating circuit having at least one second transistor is coupled between the second end of the switch circuit and the reference voltage terminal. The second transistor is configured to dissipate a surge current and also turned off when operated normally.
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公开(公告)号：US20210318365A1
公开(公告)日：2021-10-14
申请号：US17137383
申请日：2020-12-30
Applicant: RichWave Technology Corp.
Inventor： Shun-Nan Tai
Abstract: A power detector includes a detection circuit and a bias circuit. The detection circuit is used to receive an input signal and output a power indication signal. The bias circuit includes a first impedance unit, a second impedance unit and a transistor. The transistor includes a first terminal and a control terminal coupled to the first impedance unit, and a second terminal. The second impedance unit is coupled between the first terminal of the transistor and an output terminal of the bias circuit, or between the second terminal of the transistor and a second terminal of the bias circuit. The output terminal of the bias circuit is coupled to an input terminal of the detection circuit, and is used to output a bias signal.
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公开(公告)号：US20210255302A1
公开(公告)日：2021-08-19
申请号：US17169568
申请日：2021-02-08
Applicant: RichWave Technology Corp.
Inventor： Keng-Hao Liu , Han-Jieh Chang , Hsiang-Feng Chi
IPC: G01S13/56 , G01S13/58 , A61B8/08 , A61B5/0507
Abstract: A method of detecting a life includes receiving an echo signal including an in-phase component and a quadrature component, performing a preprocessing procedure on the echo signal to generate a preprocessed signal, generating, according to the preprocessed signal, complex conjugate data associated with the in-phase component and the quadrature component, performing a first time-domain-to-frequency-domain transform on the complex conjugate data to generate Doppler spectrogram data comprising a plurality of positive velocity energies and a plurality of negative velocity energies, generating combined Doppler spectrogram data according to the plurality of positive velocity energies and the plurality of negative velocity energies, performing a second time time-domain-to-frequency-domain transform on the combined Doppler spectrogram data to generate spectrum data, and determining whether a life is detected according to the spectrum data.
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