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公开(公告)号：US12066516B2
公开(公告)日：2024-08-20
申请号：US17472679
申请日：2021-09-12
Applicant: RichWave Technology Corp.
Inventor： Hsiang-Feng Chi
CPC classification number: G01S13/34 , G01S7/352 , H04B1/44 , G01S7/358 , G01S13/343 , G01S13/345
Abstract: A radar apparatus includes a transmitting analog front-end circuit, a plurality of antenna ports, a switching controller, a switching circuit, and a receiving analog front-end circuit. The transmitting analog front-end circuit generates a transmitting signal according to a carrier wave signal. A frequency of the carrier wave signal changes with time during a frequency sweep period of the carrier wave signal. The antenna ports are respectively configured to receive an echo signal corresponding to the transmitting signal. The switching controller is coupled to the transmitting analog front-end circuit and configured to generate a control signal according to the frequency sweep period of the carrier wave signal. The switching circuit is coupled to the antenna ports and the switching controller, configured to select one of the antenna ports to receive the echo signal according to the control signal, and coupled to the receiving analog front-end circuit.
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公开(公告)号：US12040757B2
公开(公告)日：2024-07-16
申请号：US17378802
申请日：2021-07-19
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Ching-Wen Hsu , Hsien-Wei Ke
CPC classification number: H03F3/211 , H03F3/72 , H03F1/565 , H03F2200/111 , H03F2200/222 , H03F2200/372 , H03F2200/387 , H03F2203/7209
Abstract: An amplifier circuit includes a first amplifier and a second amplifier. The first amplifier receives a first signal and generates a first amplification signal accordingly. The second amplifier receives a second signal and generates a second amplification signal accordingly. The first signal is related to a first frequency band, and the second signal is related to a second frequency band different from the first frequency band. When one of the first amplifier and the second amplifier is in use, the other one of the first amplifier and the second amplifier is unused. The first amplifier and second amplifier are coupled to a reference voltage terminal through a common node. The first amplifier includes a switch coupled between the common node and a stage of the first amplifier, and the switch can be controlled for reducing the loading effect caused by the first amplifier on the second amplifier.
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公开(公告)号：US20240223133A1
公开(公告)日：2024-07-04
申请号：US18202963
申请日：2023-05-29
Applicant: RichWave Technology Corp.
Inventor： Chang-Heng Chen , Tien-Yun Peng , Chih-Sheng Chen
CPC classification number: H03F1/30 , H03F3/245 , H03F2200/451
Abstract: A radio-frequency circuit can include a power amplifier, a first bias circuit and a second bias circuit. The power amplifier can include an input terminal used to receive a radio-frequency signal, and an output terminal used to output an amplified radio-frequency signal. The first bias circuit can include a first output terminal coupled to the input terminal of the power amplifier through a common node. The second bias circuit can include a second output terminal and a current adjustment circuit, where the second output terminal can be coupled to the common node, and the current adjustment circuit can include a transistor. The transistor can include a first terminal coupled to the second output terminal, a second terminal used to receive a reference voltage, and a control terminal.
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44.发明公开公开(公告)号：US20240187112A1
公开(公告)日：2024-06-06
申请号：US18082592
申请日：2022-12-16
Applicant: RichWave Technology Corp.
Inventor： Shun-Pin Yang
CPC classification number: H04B17/21 , H03D3/008 , H04B17/0085 , H03D2200/0047
Abstract: A direct current (DC) offset calibration device and a method are used to calibrate a DC offset of a unit. The DC offset calibration device includes a signal generation unit, a to-be-calibrated unit, a measurement unit, and a compensation unit. The DC offset calibration method includes: using the to-be-calibrated unit to output a clipped signal resulting from a signal saturation effect; receiving a receiving signal correlated to the clipped signal, the receiving signal including an even harmonic resulting from the clipped signal; measuring a magnitude of the even harmonic to obtain a DC offset adjustment value accordingly; and adjusting the to-be-calibrated unit according to the DC offset adjustment value to calibrate the DC offset.
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公开(公告)号：US11940551B2
公开(公告)日：2024-03-26
申请号：US17521862
申请日：2021-11-09
Applicant: RichWave Technology Corp.
Inventor： Hsiang-Feng Chi
CPC classification number: G01S7/0232 , G01S7/282 , G01S13/58 , G01S13/345
Abstract: A radar detector including a radar transmitting device, a radar receiving device, an analog-to-digital converter (ADC), and a digital processing unit, and an interference suppression method using the radar detector are provided. The radar transmitting device transmits a first wireless signal. The radar receiving device receives a second wireless signal to generate an analog reference signal in response to the first wireless signal is subdued from being transmitted, and receives a third wireless signal to generate an analog main signal in response to the first wireless signal is not subdued from being transmitted. The ADC generates a digital reference signal according to the analog reference signal, and generates a digital main signal according to the analog main signal. The digital processing unit adjusts the digital or analog main signal according to the digital reference signal to correspondingly suppress interference components in the digital main signal or in the analog main signal.
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Patent Agency Ranking
公开(公告)号：US11899048B2
公开(公告)日：2024-02-13
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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公开(公告)号：US20230367001A1
公开(公告)日：2023-11-16
申请号：US18080742
申请日：2022-12-14
Applicant: RichWave Technology Corp.
Inventor： Tse-Peng Chen
IPC: G01S13/56
CPC classification number: G01S13/56
Abstract: A motion detecting system includes a microwave motion sensor and an MCU. After detecting a motion with a first configuration, the microwave motion sensor is configured to operate with a second configuration for detecting another motion. The MCU is configured to operate in different modes for performing corresponding actions based on whether the microwave motion sensor can detect motions with different configurations, thereby reducing power consumption. The present motion detecting system can determine the type of motions detected by the microwave motion sensor, thereby reducing the false alarm rate.
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公开(公告)号：US11764775B2
公开(公告)日：2023-09-19
申请号：US17496766
申请日：2021-10-08
Applicant: RichWave Technology Corp.
Inventor： Chun-Hao Wei , Chih-Sheng Chen
IPC: H03K17/56
CPC classification number: H03K17/56
Abstract: The switch device includes a first circuit. The first circuit has a first end coupled between a first terminal and a second terminal, and the first circuit has the second end coupled between the first terminal and the second terminal or coupled to a third terminal. The first circuit includes a first switch and a second switch. The first switch is coupled between the first end and the second end of the first circuit and is turned on or off according to a first control signal. The second switch is connected to the first switch in parallel and is turned on or off according to a second control signal. The first switch and the second switch include transistors of the same type. In a surge protection mode, the second switch is turned on to dissipate the surge current.
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公开(公告)号：US11757416B2
公开(公告)日：2023-09-12
申请号：US17219902
申请日：2021-04-01
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Yun-Jhu Lai
CPC classification number: H03F1/56 , H03F3/195 , H03F2200/105 , H03F2200/318 , H03F2200/451
Abstract: A matching circuit includes an input terminal, an output terminal, a first impedance component, a first set of switching devices, a second impedance component, a second set of switching devices and a controller. The first impedance component includes a first terminal coupled between the input terminal and the output terminal, and a second terminal. The first set of switching devices is coupled to the second terminal of the first impedance component, the controller and a reference terminal. The second impedance component includes a first terminal coupled between the second terminal of the first impedance component and the first set of switching devices, and a second terminal. The second set of switching devices is coupled to the second terminal of the second impedance component, the controller and the reference terminal. The controller controls the first set of switch devices and the second set of switch devices according to a detection signal.
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公开(公告)号：US11709243B2
公开(公告)日：2023-07-25
申请号：US17975591
申请日：2022-10-27
Applicant: RichWave Technology Corp.
Inventor： Tse-Peng Chen
IPC: G01S13/04 , F21V23/04 , G01S13/56 , H05B47/19 , H05B47/115
CPC classification number: G01S13/04 , F21V23/0471 , G01S13/56 , H05B47/115 , H05B47/19
Abstract: An occupancy detection apparatus has a switch, a first antenna, a second antenna, a transmitter, and a motion detection circuit. The occupancy detection apparatus monitors for a first motion in a first region using the first antenna using a first motion detection parameter. When no first motion is sensed by the monitoring using the first antenna, the occupancy detection apparatus monitors for a second motion in a second region using the second antenna using a second motion detection parameter. When no second motion is sensed by monitoring using the second antenna, the occupancy detection apparatus designates a space, which encompasses the second region, as unoccupied. The first region and the second region overlap one another, and the first motion detection parameter is different from the second motion detection parameter.
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