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公开(公告)号：US20240291441A1
公开(公告)日：2024-08-29
申请号：US18421997
申请日：2024-01-25
发明人： YU-JIU WANG , HAO-CHUNG CHOU , YUE MING WU , TA-SHUN CHU
摘要： A bias voltage generating circuit includes an amplifier circuit and a negative feedback circuit. The amplifier circuit is configured to generate a bias voltage according to a first voltage input and a second voltage input. The negative feedback circuit is coupled to the amplifier circuit, and configured to control the first voltage input. The negative feedback circuit includes a first voltage generator and a second voltage generator. The first voltage generator, coupled to the amplifier circuit, is biased by the bias voltage and configured to amplify a third voltage input to generate the first voltage input. The second voltage generator, coupled to the first voltage generator, is configured to generate the third voltage input. A ratio of the first voltage input to the third voltage input is locked according to a ratio of the second voltage input to the third voltage input.
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公开(公告)号：USD984985S1
公开(公告)日：2023-05-02
申请号：US29771049
申请日：2021-02-19
设计人： Yu-Jiu Wang , Chia-Cheng Kung , Yu-Ju Chen , Boon How Teoh
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公开(公告)号：US20230015197A1
公开(公告)日：2023-01-19
申请号：US17811313
申请日：2022-07-08
发明人： YU-JIU WANG , LI HAN CHANG , HAO-CHUNG CHOU , TA-SHUN CHU
摘要： A radio frequency (RF) transmitter includes a radiating element, a chip and a phase shifting circuit. The radiating element is arranged to receive a plurality of electrical signals to produce an RF output signal. The chip includes an amplifier circuit. The amplifier circuit is configured to amplify an RF input signal to generate a plurality of amplified signals at a plurality of output terminals, respectively. The phase shifting circuit is located outside the chip, and coupled to the output terminals and the radiating element. The phase shifting circuit is arranged to phase shift the amplified signals, and accordingly generate the electrical signals fed to the radiating element. The phase shifting circuit and the radiating element are formed on a same substrate.
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公开(公告)号：US20220360271A1
公开(公告)日：2022-11-10
申请号：US17871433
申请日：2022-07-22
发明人： Yu-Jiu WANG , Bor-Ching SU
摘要： A radar system includes: a plurality of first receiving devices for generating a plurality of first digital signals according to a plurality of first incoming signals, respectively; and a plurality of second receiving devices for generating a plurality of second digital signals according to a plurality of second incoming signals, respectively. A processing device is arranged to perform a first beamforming operation to generate a plurality of first beamforming signals according to the plurality of first digital signals and a first gain matrix, and to perform a second beamforming operation to generate a plurality of second beamforming signals according to the plurality of second digital signals and a second gain matrix; and to determine an altitude angle of a first object and a second object, and to determine a first azimuth angle of the first object and a second azimuth angle of the second object.
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公开(公告)号：US11496142B2
公开(公告)日：2022-11-08
申请号：US17741819
申请日：2022-05-11
发明人： Yu-Jiu Wang , Ta-Shun Chu , Yue Ming Wu
IPC分类号： H03L7/00 , H04L7/00 , H04W56/00 , H03L7/18 , H03K23/66 , H03L7/24 , G01S7/02 , G01S7/295 , G01S13/34 , H04B7/06
摘要： A signal distribution system includes: a first signal divider arranged to generate a first output oscillating signal according to a first input oscillating signal; a second signal divider arranged to generate a second output oscillating signal according to the first input oscillating signal; a first transmitting channel coupled to the first signal divider and the second divider for transmitting the first input oscillating signal to the first signal divider and the second signal divider; and a second transmitting channel coupled to the first signal divider and the second divider for transmitting a second input oscillating signal to the first signal divider and the second signal divider; wherein the first input oscillating signal has a first frequency, the second input oscillating signal has a second frequency, and the second frequency is smaller than the first frequency.
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公开(公告)号：US11368161B2
公开(公告)日：2022-06-21
申请号：US16992786
申请日：2020-08-13
发明人： Yu-Jiu Wang , Ta-Shun Chu , Yue Ming Wu
摘要： A signal divider includes: a dividing circuit arranged to generate an output oscillating signal according to a first input oscillating signal; and a signal generating circuit, coupled to the dividing circuit, for generating an injection signal to the dividing circuit. The dividing circuit is arranged to generate the output oscillating signal with a predetermined phase according to the injection signal and the first input oscillating signal.
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公开(公告)号：US20220099722A1
公开(公告)日：2022-03-31
申请号：US17475245
申请日：2021-09-14
发明人： YU-JIU WANG , LI HAN CHANG
摘要： A near-field testing apparatus for testing a device under test having an array of transmitter antennas is provided. The near-field testing apparatus includes a frame structure and a receiver circuit. The frame structure defines an array of grid sections, and is arranged for receiving the array of transmitter antennas at a first side of the array of grid sections. A periphery of each grid section at the first side surrounds a plurality of transmitter antennas in the array of transmitter antennas. The grid section is arranged to guide respective electromagnetic signals emitted by the transmitter antennas from the first side to a second side of the array of grid sections. The receiver circuit, disposed at the second side of the array of grid sections, is arranged to couple the electromagnetic signals out of the grid section.
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公开(公告)号：US20210048520A1
公开(公告)日：2021-02-18
申请号：US16992546
申请日：2020-08-13
发明人： Yu-Jiu WANG , Bor-Ching SU
摘要： A radar system includes: a processing device arranged to generate a plurality of phase shifting digital signals; a plurality of transmitting devices for generating an RF beam according to the plurality of phase shifting digital signals during a first mode; a plurality of first receiving devices for generating a plurality of first digital signals according to a plurality of first incoming signals, respectively, during a second mode; and a plurality of second receiving devices for generating a plurality of second digital signals according to a plurality of second incoming signals, respectively, during the second mode. The processing device is further arranged to distinguish a first object and a second object when the RF beam hits the first object and the second object, and the first object and the second object have a same radial speed and are located at a same range.
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公开(公告)号：US20240178558A1
公开(公告)日：2024-05-30
申请号：US18516989
申请日：2023-11-22
发明人： KUN-CHIEN HUNG , YU-JIU WANG , BOR-CHING SU , CHIEN CHENG WANG , CHIEN-TE LI
IPC分类号： H01Q3/26
CPC分类号： H01Q3/2605 , H01Q3/267
摘要： The present application discloses a beamforming antenna device and a method for operating a beamforming antenna device. The beamforming antenna device includes a plurality of antenna elements and a plurality of sub-arrays. The plurality of sub-arrays are coupled to the plurality of antenna elements. Each of the sub-arrays is coupled to its adjacent sub-arrays of the plurality of sub-arrays, and at least a portion of the plurality of sub-arrays form a sub-array chain.
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公开(公告)号：US20230420842A1
公开(公告)日：2023-12-28
申请号：US18065957
申请日：2022-12-14
发明人： LI HAN CHANG , YU-JIU WANG
CPC分类号： H01Q3/267 , H01Q1/48 , H01Q3/36 , H01Q9/0428
摘要： An antenna device includes: a substrate; a first ground plate arranged in a first layer and disposed on the substrate; a first signal port and a second signal port arranged in a second layer adjacent to the first layer and configured to transmit a first radio-frequency (RF) signal and a second RF signal, respectively; a first feed line and a second feed line arranged in the second layer and connected to the first signal port and the second signal port, respectively; and a radiation element disposed over the substrate. The substrate is arranged to provide a first signal channel and a second signal channel between the radiation element and the first or second feed line for transmitting the first and second RF signals, the first feed line and the second feed line have different line lengths, and the radiation element at least partially overlaps the first and second signal channels.
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