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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：US20200099339A1
公开(公告)日：2020-03-26
申请号：US16697195
申请日：2019-11-27
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Tien-Yun Peng , Hung-Chia Lo
Abstract: An amplifier device comprises an amplifying unit and a bias module. The amplifying unit has a first end coupled to a voltage source configured to receive a source voltage, a second end configured to receive an input signal, and a third end coupled to a first reference potential terminal configured to receive a first reference potential. The first end of the amplifying unit is configured to output an output signal amplified by the amplifying unit. The bias module is coupled to the second end of the amplifying unit, and configured to receive a voltage signal to provide a bias current to the amplifying unit. The voltage signal is a variable voltage. A supply current flowing into the amplifying unit and is adjusted in accordance with the voltage signal to stay within a predetermined range.
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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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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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165.发明申请公开(公告)号：US20200003864A1
公开(公告)日：2020-01-02
申请号：US16418967
申请日：2019-05-21
Applicant: RichWave Technology Corp.
Inventor： Hsiang-Feng Chi
Abstract: Doppler signal processing device for detecting an object according to a received wireless signal. The Doppler signal processing device includes a frequency analysis unit for generating a frequency domain signal vector according to at least one digital signal, an interference suppression unit for performing a suppression operation according to the frequency domain signal vector and a frequency domain interference estimation signal vector to generate an interference suppressed frequency domain signal vector, an interference estimation unit for generating the frequency domain interference estimation signal vector according to the frequency domain signal vector, a detection unit for generating a result signal according to the interference suppressed frequency domain signal vector, an error detection unit for optionally providing an error detection control signal to the interference estimation unit to adjust a rate of updating the frequency domain interference estimation signal vector.
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Patent Agency Ranking
公开(公告)号：US20190386620A1
公开(公告)日：2019-12-19
申请号：US16439726
申请日：2019-06-13
Applicant: RichWave Technology Corp.
Inventor： Yi-Fong Wang
Abstract: A bias circuit includes a current sensor, a transistor, and a low pass filter circuit. The current sensor has a first terminal coupled to a voltage terminal, and a second terminal. The transistor has a first terminal coupled to the second terminal of the current sensor, a second terminal coupled to a radio frequency signal path for providing a bias signal, and a control terminal for receiving a reference voltage. The low pass filter circuit is coupled between the second terminal of the current sensor and the control terminal of the transistor.
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公开(公告)号：US20190369654A1
公开(公告)日：2019-12-05
申请号：US16425964
申请日：2019-05-30
Applicant: RichWave Technology Corp.
Inventor： Kuang-Lieh Wan
Abstract: The reference voltage generator includes an output terminal, first to fourth resistors, first to fourth transistors, and a diode unit. The first transistor is coupled to the second transistor. The first resistor is coupled between the second transistor and a second reference voltage terminal. The first resistor is also coupled to the first transistor. One terminal of the diode unit is coupled to the output terminal, and the other terminal of the diode unit is coupled to the second and third resistors. The second and third resistors are also coupled to the first and second transistors, respectively. The third transistor is coupled between the fourth resistor and the second reference voltage terminal, and includes a control terminal coupled to the second transistor. The fourth transistor is coupled between a first reference voltage terminal and the diode unit. The fourth transistor is also coupled to the fourth resistor.
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公开(公告)号：US20190356283A1
公开(公告)日：2019-11-21
申请号：US16153805
申请日：2018-10-07
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Ming-Shiuan Wen
Abstract: A power amplifier device includes a first amplifier, a second amplifier, a capacitor, a node, and an impedance matching circuit. The second amplifier amplifies a radio frequency signal transmitted from the first amplifier. The capacitor is coupled between an output terminal of the first amplifier and an input terminal of the second amplifier. The node is disposed between the input terminal of the second amplifier and the capacitor. The impedance matching circuit is coupled to the node and a common voltage terminal. The impedance matching circuit is substantially an open circuit at a center frequency of the radio frequency signal. The impedance matching circuit provides substantially a short-circuited path from the node to the common voltage terminal at a frequency twice the center frequency.
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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：US20190265285A1
公开(公告)日：2019-08-29
申请号：US16201972
申请日：2018-11-27
Applicant: RichWave Technology Corp.
Inventor： Ren-Hong Yen
IPC: G01R27/26 , G01D5/24 , H03K17/955
Abstract: A capacitance adjustment method for enabling or disabling a first set of capacitors to an nth set of capacitors of n sets of capacitors, includes generating a base count according to base capacitance, generating a first count to an nth count according to the first set of capacitors to the nth set of capacitors respectively, obtaining a first ratio to an nth ratio according to the base count and the first count to the nth count, indicating a target count, obtaining a target ratio according to the base count and the target count, and obtaining a first control signal to an nth control signal according to the target ratio and the first ratio to the nth ratio so as to enable or disable the first set of capacitors to the nth set of capacitors accordingly.
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