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公开(公告)号：US11700022B2
公开(公告)日：2023-07-11
申请号：US17678034
申请日：2022-02-23
Applicant: RichWave Technology Corp.
Inventor： Chin-Lung Yang
CPC classification number: H04B1/0057 , H04B1/163
Abstract: A diplexer includes a first filter circuit, and a second filter circuit. The first filter circuit is coupled to a first port for providing a first signal path for a first radio frequency (RF) signal. The second filter circuit is coupled to the first port for providing a second signal path for a second RF signal. The first filter circuit includes a first tunable resonant circuit for tuning a first transmission zero corresponding to a first frequency multiplication of the first RF signal. The second filter circuit includes a second tunable resonant circuit for tuning a first transmission zero corresponding to a first frequency multiplication of the second RF signal. The first frequency multiplication of the first RF signal corresponding to the first filter circuit is a fourth harmonic of the first RF signal.
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公开(公告)号：US20230208042A1
公开(公告)日：2023-06-29
申请号：US17565457
申请日：2021-12-30
Applicant: RichWave Technology Corp.
Inventor： Shih-Kai Lin
CPC classification number: H01Q13/18 , H01Q9/045 , H01Q19/025
Abstract: An antenna apparatus is provided. The antenna apparatus includes a cavity element, a radiating element, and a feeding element. The cavity element includes an opening. The radiating element is located in the opening and is disposed at a conductive layer. An outline of the radiating element and the opening form a surround slot. An imaginary rectangle has four sides respectively abutted against an external outline of the surround slot. The feeding element is disposed at another parallel conductive layer. The feeding element includes two sections. There is a coupling spacing is between a section and the radiating element to feed into the radiating element through electric field coupling. A tail end of the section is an open circuit. Another section is an initial section of the feeding element inserted into the opening. There is a shifting spacing between the another section and a central line of the imaginary rectangle.
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公开(公告)号：US20230197548A1
公开(公告)日：2023-06-22
申请号：US18113062
申请日：2023-02-23
Applicant: RichWave Technology Corp.
Inventor： Yu-Lung Wen
CPC classification number: H01L23/3121 , H01L24/16 , H01L24/81 , H01L24/26 , H01L2224/26145 , H01L2224/16227 , H01L2224/81815
Abstract: A method of manufacturing an electronic package structure is disclosed. A solder mask layer is formed on an upper surface of a substrate. A recessed area is formed in the solder mask layer. An electronic component is mounted on the substrate. Pads are disposed on the upper surface of the substrate. The pads respectively correspond to the bumps on a first surface of the electronic component. The pads are electrically connected to the bumps. A heat treatment is performed to make the first surface close to the substrate and form a cavity in the recessed area. The cavity is between the first surface of the electronic component, the solder mask layer and the upper surface of the substrate.
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公开(公告)号：US20230179232A1
公开(公告)日：2023-06-08
申请号：US17678034
申请日：2022-02-23
Applicant: RichWave Technology Corp.
Inventor： Chin-Lung Yang
CPC classification number: H04B1/0057 , H04B1/163
Abstract: A diplexer includes a first filter circuit, and a second filter circuit. The first filter circuit is coupled to a first port for providing a first signal path for a first radio frequency (RF) signal. The second filter circuit is coupled to the first port for providing a second signal path for a second RF signal. The first filter circuit includes a first tunable resonant circuit for tuning a first transmission zero corresponding to a first frequency multiplication of the first RF signal. The second filter circuit includes a second tunable resonant circuit for tuning a first transmission zero corresponding to a first frequency multiplication of the second RF signal. The first frequency multiplication of the first RF signal corresponding to the first filter circuit is a fourth harmonic of the first RF signal.
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公开(公告)号：US11662424B2
公开(公告)日：2023-05-30
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.
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Patent Agency Ranking
公开(公告)号：US11609249B2
公开(公告)日：2023-03-21
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：US20230047897A1
公开(公告)日：2023-02-16
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
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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公开(公告)号：US11450656B2
公开(公告)日：2022-09-20
申请号：US16522677
申请日：2019-07-26
Applicant: RichWave Technology Corp.
Inventor： Chuan-Chen Chao
Abstract: An anti-parallel diode device includes a first semiconductor, a second semiconductor, a third semiconductor, and a third diode. The first semiconductor is of a first conductivity type, and the second semiconductor and the third semiconductor are of a second conductivity type. The second semiconductor is in contact with the first semiconductor, so that the first semiconductor and the second semiconductor form a first diode. The third semiconductor is in contact with the first semiconductor, so that the first semiconductor and the third semiconductor form a second diode. A first terminal of the third diode is electrically connected to the first semiconductor. The first terminal of the third diode is of the second conductivity type.
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29.发明授权公开(公告)号：US11362870B2
公开(公告)日：2022-06-14
申请号：US17115805
申请日：2020-12-09
Applicant: RichWave Technology Corp.
Inventor： Ching Shou Huang
IPC: H04L27/152 , H03L7/099 , H04L7/033 , H03L7/093
Abstract: A frequency modulation demodulation device and a control method thereof are provided. The frequency modulation demodulation device includes an input terminal, a phase converter, a phase-locked loop circuit, and a frequency offset/shift detector. The phase converter receives an input signal to obtain a phase signal. The phase-locked loop circuit generates a phase adjustment signal according to the phase signal and adjusts the phase signal according to the phase adjustment signal to perform demodulation of the input signal. The phase-locked loop circuit performs signal alignment and signal compensation on the phase signal to generate a filtered phase signal. The phase adjustment signal provides a feedback of and adjusts the phase signal. The frequency offset/shift detector generates a frequency offset/shift determining signal according to the phase adjustment signal. The frequency offset/shift determining signal is related to a phase frequency offset/shift of the input signal.
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公开(公告)号：US20220173707A1
公开(公告)日：2022-06-02
申请号：US17535701
申请日：2021-11-26
Applicant: RichWave Technology Corp.
Inventor： Tien-Yun Peng , Chih-Sheng Chen
Abstract: A bias circuit includes a current mirror circuit, an operational amplifier, and a bias generating circuit. The current mirror circuit includes a reference branch circuit and at least one mirror branch circuit. The reference branch circuit generates a reference current according to a base current, and the at least one mirror branch circuit generates at least one mirrored current according to the reference current. The operational amplifier receives a first voltage from the reference branch circuit and a second voltage from the at least one mirror branch circuit, and adjusts the first voltage by generating a control voltage according to the second voltage. The bias generating circuit is coupled to the at least one mirror branch circuit and generates a bias signal according to the at least one mirrored current.
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