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1.发明公开公开(公告)号：US20230238998A1
公开(公告)日：2023-07-27
申请号：US17877896
申请日：2022-07-30
Inventor： Bo Zhang , Zhongqian Niu , Xiaobo Yang , Bingli Dai , Yi Hu , Jicong Zhang , Yong Fan , Ke Liu , Zhi Chen
Abstract: The present disclosure provides a hetero-integrated terahertz low-noise miniaturized image frequency rejection transceiver front-end, including an intermediate frequency circuit and a terahertz circuit arranged up and down, where the terahertz circuit includes a local oscillator frequency tripler, a 135° 3 dB filter coupler, a radio frequency waveguide power divider, and two quartz hetero-integrated subharmonic mixers; resonant cavities of an input unit, a first output unit, an isolation unit, and a second output unit of the 135° 3 dB filter coupler are sequentially coupled through resonant grooves to form a ring structure, a cavity length of the resonant cavity of the input unit is twice that of the resonant cavities of the other three units, and an electrical length of a waveguide of the first output unit is 45° different from that of a waveguide of the second output unit.
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2.发明公开公开(公告)号：US20230238997A1
公开(公告)日：2023-07-27
申请号：US17873134
申请日：2022-07-25
Inventor： Bo Zhang , Zhongqian Niu , Xiaobo Yang , Bingli Dai , Yi Hu , Jicong Zhang , Yong Fan , Ke Liu , Zhi Chen
Abstract: The present disclosure provides a GaAs monolithic integrated terahertz low-noise communication system transceiver front-end, including an intermediate frequency circuit and a terahertz circuit. The terahertz circuit includes a local oscillator frequency tripler, a local oscillator unidirectional 3 dB filter coupler, a radio frequency 180° filter coupler, and two terahertz GaAs monolithic integrated subharmonic mixers. The local oscillator unidirectional 3 dB filter coupler and the radio frequency 180° filter coupler each include one ring-cylindrical resonant cavity and four rectangular waveguides. The ring-cylindrical resonant cavity is divided into four rectangular waveguides which are correspondingly connected to the four sector-annular resonant cavities, respectively. The present disclosure suppresses the local oscillator noise by adopting a local oscillator unidirectional 3 dB filter coupler and a radio frequency 180° filter coupler with both coupling and filtering functions, thereby achieving a low local oscillator noise transceiver front-end.
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3.发明授权公开(公告)号：US12212357B2
公开(公告)日：2025-01-28
申请号：US17873134
申请日：2022-07-25
Inventor： Bo Zhang , Zhongqian Niu , Xiaobo Yang , Bingli Dai , Yi Hu , Jicong Zhang , Yong Fan , Ke Liu , Zhi Chen
Abstract: The present disclosure provides a GaAs monolithic integrated terahertz low-noise communication system transceiver front-end, including an intermediate frequency circuit and a terahertz circuit. The terahertz circuit includes a local oscillator frequency tripler, a local oscillator unidirectional 3 dB filter coupler, a radio frequency 180° filter coupler, and two terahertz GaAs monolithic integrated subharmonic mixers. The local oscillator unidirectional 3 dB filter coupler and the radio frequency 180° filter coupler each include one ring-cylindrical resonant cavity and four rectangular waveguides. The ring-cylindrical resonant cavity is divided into four rectangular waveguides which are correspondingly connected to the four sector-annular resonant cavities, respectively. The present disclosure suppresses the local oscillator noise by adopting a local oscillator unidirectional 3 dB filter coupler and a radio frequency 180° filter coupler with both coupling and filtering functions, thereby achieving a low local oscillator noise transceiver front-end.
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公开(公告)号：US10985470B2
公开(公告)日：2021-04-20
申请号：US16386296
申请日：2019-04-17
Inventor： Yujian Cheng , Yafei Wu , Jinfan Zhang , Fan Zhao , Chunxu Bai , Yong Fan , Kaijun Song , Bo Zhang , Xianqi Lin , Yonghong Zhang
Abstract: A slot array antenna including a smooth curved surface and planar feed structures which are respectively disposed at two ends of the smooth curved surface and are tangent to the smooth curved surface. The smooth curved surface includes at least two arcs mutually connected by smooth transition. The at least two arcs each includes an upper copper metal layer, a lower copper metal layer, and a dielectric substrate layer between the upper and lower copper metal layers. The upper copper metal layer includes radiating slots, and the adjacent radiating slots in a linear array have opposite offsets along the center line of the slot array antenna. The dielectric substrate layer includes metallic vias symmetrically arranged on both sides of the central line of the antenna to form a substrate integrated waveguide.
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