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公开(公告)号：US20250158647A1
公开(公告)日：2025-05-15
申请号：US18540894
申请日：2023-12-15
Applicant: RichWave Technology Corp.
Inventor： Yu-Hsuan Chao , Chih-Sheng Chen
Abstract: A radio frequency (RF) amplification circuit has an input terminal for receiving an RF input signal, an output terminal for providing an RF output signal, an amplification path, and a bypass path. The amplification path is coupled between the input terminal and output terminal and includes an amplifier. The bypass path and the amplification path are coupled in parallel between the input terminal and the output terminal, and the bypass path includes a bypass switch, a first node, a second node, a wiring segment, and a variable capacitive structure. The first node is located between the input terminal and the bypass switch. The second node is located between the first node and the bypass switch. The wiring segment is coupled between the first node and second node. The variable capacitive structure is coupled between the first and second nodes and includes a capacitive element and a switching element.
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公开(公告)号：US20250150147A1
公开(公告)日：2025-05-08
申请号：US18539266
申请日：2023-12-14
Applicant: RichWave Technology Corp.
Inventor： Chien-Chang Chou , Jyun-Wei Chang
Abstract: A beam switching system, beam switching method, and antenna device are provided. The beam switching system includes a selection circuit and a branch line coupler. The selection circuit includes an input port for receiving the input radio frequency signal and two output ports. The selection circuit selects at least one of its two output ports to output the output radio frequency signal. The branch line coupler includes two input ports respectively coupled to two output ports of the selection circuit and used to receive the output radio frequency signal, and two output ports respectively used to couple two antennas.
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公开(公告)号：US20250149237A1
公开(公告)日：2025-05-08
申请号：US18395653
申请日：2023-12-25
Applicant: RichWave Technology Corp.
Inventor： Chia-Jung Yeh , Chih-Sheng Chen
Abstract: A system includes a primary coil, a series combination having a first conducting wire and a first capacitor coupled in series, a second conducting wire, and a secondary coil. A first end of the series combination is coupled to a first end of the primary coil. A first end of the second conducting wire is coupled to the first end of the primary coil. A second end of the second conducting wire is coupled to the second end of the series combination. A first end of the secondary coil is coupled to an output end.
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公开(公告)号：US20250141423A1
公开(公告)日：2025-05-01
申请号：US18519084
申请日：2023-11-27
Applicant: RichWave Technology Corp.
Inventor： Shih-Meng Lin
Abstract: An acoustic wave device includes a first electrode, a piezoelectric layer and a second electrode. The piezoelectric layer is disposed at least partially on the first electrode. The second electrode is disposed at least partially on the piezoelectric layer. The second electrode includes an electrode body having an outline and a plurality of protrusions extending from the outline of the electrode body. The two ends of two adjacent ones of the plurality of protrusions are separated by a gap and the gap exposes at least a portion of the piezoelectric layer.
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公开(公告)号：US20250125771A1
公开(公告)日：2025-04-17
申请号：US18537821
申请日：2023-12-13
Applicant: RichWave Technology Corp.
Inventor： Po-Chun Chang
IPC: H03B5/12
Abstract: A voltage controlled oscillator includes a cross coupled pair circuit, a first capacitive circuit, a first inductor, a second inductor, a second capacitive circuit and a first switch circuit. The first capacitive circuit is arranged in parallel with the cross coupled pair circuit. The first inductor is arranged in parallel with the cross coupled pair circuit and has a center tapped node for receiving a power supply voltage. The second inductor is magnetically coupled with the first inductor and has a center tapped node for receiving a first control voltage. The second capacitive circuit is arranged in parallel with the second inductor. The first switch circuit is arranged in parallel with the second inductor and configured to be turned on or turned off by a second control voltage. The first control voltage and the second control voltage change synchronously.
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Patent Agency Ranking
公开(公告)号：US20250123385A1
公开(公告)日：2025-04-17
申请号：US18988962
申请日：2024-12-20
Applicant: RichWave Technology Corp
Inventor： Tse-Peng Chen
Abstract: A circuit for detecting motion of an object in an environment. The circuit comprises a transmission chain, an envelope extraction circuit, and a detector circuit. The transmission chain includes a power amplifier, a sensing circuit, and a single antenna. By the single antenna, a first wireless signal related to a transmission signal is transmitted. The transmission signal is a continuous wave signal. The single antenna can receive a second wireless signal as an incoming signal. The second wireless signal is a reflected first wireless signal from the object. The sensing circuit can obtain a modulation signal by combining the continuous wave signal and the incoming signal. The modulation signal contains a Doppler shift caused by the motion of the object. The envelope extraction circuit can extract a signal envelope from the modulation signal. The detector circuit can determine the motion of the object according to the signal envelope.
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公开(公告)号：US20250096838A1
公开(公告)日：2025-03-20
申请号：US18542780
申请日：2023-12-18
Applicant: RichWave Technology Corp.
Inventor： Chia-Wei Hsu
IPC: H04B1/48
Abstract: A radio-frequency front-end module includes a common node, a first node, a second node, a third node, a first path, a second path and a third path. The first path may be disposed between the common node and the first node and may include an inductor. The second path may be disposed between the common node and the second node and may include a second switch. The third path may be disposed between the common node and the third node and include a third switch. When the second switch is turned on, the second path may transceive the second signal and the third switch may be turned off, such that the inductor in the first path may provide an inductive impedance for the second signal, and the third switch may provide a capacitive impedance for the second signal.
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公开(公告)号：US12253589B2
公开(公告)日：2025-03-18
申请号：US17494794
申请日：2021-10-05
Applicant: RichWave Technology Corp.
Inventor： Hsiang-Feng Chi
Abstract: A radar apparatus and an interference suppression method are provided. The radar apparatus includes a clock generator, an analog to digital converter (ADC), and a notch filter. The clock generator is configured to generate a sampling frequency. The ADC is coupled to the clock generator, and is configured to convert an analog signal into a digital signal according to the sampling frequency. The notch filter is coupled to the ADC, and is configured to attenuate one or more interfered frequencies of the digital signal. The interfered frequencies are related to the sampling frequency. Accordingly, the interference at a specific frequency and harmonics thereof may be suppressed.
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公开(公告)号：US12184251B2
公开(公告)日：2024-12-31
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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10.发明授权公开(公告)号：US12184172B2
公开(公告)日：2024-12-31
申请号：US18089580
申请日：2022-12-28
Applicant: RichWave Technology Corp.
Inventor： Hsien-Huang Tsai , Chih-Sheng Chen , Tien-Yun Peng
Abstract: A switch device includes a driver circuit, a switch circuit and a level transition circuit. The driver circuit includes an input terminal for receiving an input signal, an output terminal for outputting an output signal, a first terminal coupled to a first reference terminal, and a second terminal coupled to a second reference terminal. The switch circuit includes a control terminal for receiving the output signal. The level transition circuit includes a first terminal for receiving the output signal, a second terminal coupled to a third reference terminal, and a third terminal for receiving the input signal. In a transition interval, the input signal is transitioned from a first input signal level to a second input signal level, the level transition circuit transitions the output signal from a first output signal level to a third output signal level between the first output signal level and a second output signal level.
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