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公开(公告)号：US10938354B2
公开(公告)日：2021-03-02
申请号：US16386293
申请日：2019-04-17
Applicant: RichWave Technology Corp.
Inventor： Jhao-Yi Lin , Chih-Sheng Chen , Ching-Wen Hsu
Abstract: An amplification device includes an amplification circuit and a protection circuit. The amplification circuit includes a transistor having a first terminal for outputting an amplified radio frequency signal, a second terminal, and a control terminal coupled to the input terminal of the amplification circuit for receiving a radio frequency signal to be amplified. The protection circuit has a first terminal coupled to the output terminal or the input terminal of the amplification circuit, and a second terminal. The protection circuit includes a switch and a first voltage clamping unit. The switch unit is turned on or turned off according to a control signal. The first voltage clamping unit is coupled to the switch unit for clamping a voltage at the first terminal of the protection circuit within a predetermined region when the switch unit is turned on.
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公开(公告)号：US10931239B2
公开(公告)日：2021-02-23
申请号：US16273077
申请日：2019-02-11
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Chang-Yi Chen
Abstract: An amplification circuit includes an input terminal for receiving a radio frequency input signal, an output terminal for outputting an amplified radio frequency signal, a bias circuit for providing a bias voltage, an impedance circuit, a transistor, and a filter circuit. The impedance circuit is coupled to the bias circuit and the input terminal, and provides a voltage drop between the first terminal and the second terminal of the impedance circuit. The first transistor has a first terminal coupled to the output terminal, a second terminal coupled to a first reference voltage terminal, and a control terminal coupled to the impedance circuit and for receiving the radio frequency input signal. The filter circuit is coupled to the first transistor and the impedance circuit, filters out a harmonic signal, and provides a feedback signal including a primary frequency signal of the amplified radio frequency signal to the impedance circuit.
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公开(公告)号：US20210050824A1
公开(公告)日：2021-02-18
申请号：US16992116
申请日：2020-08-13
Applicant: RichWave Technology Corp.
Inventor： Cheng-Min Lin
Abstract: A radio frequency amplifier circuit is provided. A matching circuit is configured on a radio frequency path of an input end or an output end of an amplifier. An inductance-capacitance resonance circuit and the matching circuit share an inductor included in the matching circuit to generate a corresponding resonance frequency. The matching circuit provides an input impedance or an output impedance matching two fundamental tones in a radio frequency signal at a first frequency and a second frequency. The inductance-capacitance resonance circuit provides a filtering path for filtering a signal component outside a frequency band formed by the first frequency and the second frequency in the radio frequency signal.
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264.发明授权公开(公告)号：US10833745B2
公开(公告)日：2020-11-10
申请号：US16698867
申请日：2019-11-27
Applicant: RichWave Technology Corp.
Inventor： You-Chieh Chen , Tse-Peng Chen , Shih-Kai Lin
Abstract: A wireless signal transceiver device includes a dual-polarized antenna, a transmission circuit and a reception circuit. The dual-polarized antenna is used to transmit a first wireless signal and receive a second wireless signal at the same time. The dual-polarized antenna includes a first feed zone and a second feed zone. The first feed zone is used to receive a transmission signal, and the first wireless signal is related to the transmission signal. The second feed zone is used to output a reception signal, and the reception signal is related to the second wireless signal. The transmission circuit is used to generate the transmission signal. The reception circuit is used to generate a processing signal, and the processing signal is related to the reception signal.
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公开(公告)号：US10797703B2
公开(公告)日：2020-10-06
申请号：US16691503
申请日：2019-11-21
Applicant: RichWave Technology Corp.
Inventor： Tien-Yun Peng , Chih-Sheng Chen
IPC: H03B1/00 , H03K3/00 , 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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Patent Agency Ranking
公开(公告)号：US10794943B2
公开(公告)日：2020-10-06
申请号：US16201972
申请日：2018-11-27
Applicant: RichWave Technology Corp.
Inventor： Ren-Hong Yen
IPC: G01R27/26 , H03K17/955 , G01D5/24
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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公开(公告)号：US10707815B2
公开(公告)日：2020-07-07
申请号：US16406026
申请日：2019-05-08
Applicant: RichWave Technology Corp.
Inventor： Chih-Sheng Chen , Hung-Chia Lo , Tien-Yun Peng
Abstract: An amplifier device includes an amplifying unit, a bias module, an impedance unit and an adjusting module. The amplifying unit has a first end coupled to a voltage source and used for outputting an output signal amplified by the amplifying unit, a second end used for receiving an input signal, and a third end coupled to a first reference potential terminal. The bias module is coupled to the second end of the amplifying unit, and provides a bias voltage to the amplifying unit and adjusts linearity of the amplifier device according to a source voltage from the voltage source. The impedance unit is coupled to the bias module and used to receive a control voltage to adjust an impedance value of the impedance unit. The adjusting module is used to output the control voltage to the impedance unit according to the source voltage and a reference voltage.
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公开(公告)号：US10700680B2
公开(公告)日：2020-06-30
申请号：US16596768
申请日：2019-10-09
Applicant: RichWave Technology Corp.
Inventor： Juang-Shiung Wu
Abstract: A control circuit includes a reset circuit and a determination circuit. The reset circuit is coupled to a digital frequency divider of a phase locked loop circuit and configured to perform a reset operation. The determination circuit is coupled to the reset circuit and configured to determine whether a first predetermined time interval has elapsed so as to control the reset circuit to stop performing the reset operation when the first predetermined time interval has elapsed.
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269.发明授权公开(公告)号：US10677889B2
公开(公告)日：2020-06-09
申请号：US15925722
申请日：2018-03-19
Applicant: RichWave Technology Corp.
Inventor： Hsiang-Feng Chi
IPC: G01S7/02 , G01S13/58 , G01S13/02 , G01S13/26 , G01S13/34 , G01S13/00 , G01S13/32 , G01S7/282 , G01S7/285 , G01S13/06 , H04B1/707 , H04B1/7073
Abstract: A signal processing system includes a transmission module and a receiving module. The transmission module generates and transmits a transmitted radio frequency signal according to a data signal and a first spread vector. The transmission module includes a spread spectrum unit, a digital-to-analog converter and a mixer. The spread spectrum unit generates a spread spectrum signal according to the data signal and the first spread vector. The digital-to-analog unit generates an analog signal according to the spread spectrum signal. The mixer mixes the analog signal and a carrier signal so as to generate the transmitted radio frequency signal. The receiving module receives a received radio frequency signal and a second spread vector so as to generate a spectrum despread signal and generate object detection information data accordingly. The received radio frequency signal is generated by having the transmitted radio frequency signal reflected by a measured object.
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公开(公告)号：US20200012308A1
公开(公告)日：2020-01-09
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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