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公开(公告)号：US10276904B2
公开(公告)日：2019-04-30
申请号：US15625374
申请日：2017-06-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zeming Zhang , Huizhen Qian , Xun Luo
Abstract: A resonant unit and a filter, where the resonant unit includes a dielectric substrate, a metal microstrip disposed on a plane of the dielectric substrate, where the metal microstrip is used as a signal input/output port, and a defected ground structure disposed on another plane opposite to the plane of the dielectric substrate, where the defected ground structure includes a ground loop and an interdigital structure located inside the ground loop, the interdigital structure includes multiple fingers, and the ground loop or at least one finger in the interdigital structure includes at least one embedded interdigital structure. Harmonic suppression capabilities of the resonant unit and the filter can be improved, and an area can be reduced.
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公开(公告)号：US20180248243A1
公开(公告)日：2018-08-30
申请号：US15965390
申请日：2018-04-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Bingzheng Yang , Huizhen Qian , Xun Luo
Abstract: A filter is provided, and the filter includes two mutually coupled slow-wave resonators. Each resonator includes a coplanar waveguide (CPW) transmission line, a tapered CPW transmission line, and a ground stub, and can generate a slow-wave feature to push a high-order harmonic wave of a baseband signal to a high frequency, so as to implement a wide stopband feature. In addition, a slow-wave effect is used to properly design a size of a filter, to reduce an entire area of the filter and reduce costs. Moreover, two resonators are coupled, to enhance passband performance of the filter, increase bandwidth, increase in-passband flatness, and reduce an insertion loss.
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公开(公告)号：US20180145660A1
公开(公告)日：2018-05-24
申请号：US15816163
申请日：2017-11-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huizhen Qian , Xun Luo
IPC: H03H11/22
Abstract: A digital phase shifter includes a logic control circuit, at least four current digital-to-analog converters, at least four amplifiers, and a vector summation circuit. The logic control circuit generates four N-bit digital phase shift control signals according to an (N+2)-bit digital control source signal, and respectively inputs the four N-bit digital phase shift control signals to the four current digital-to-analog converters. The four current digital-to-analog converters are respectively connected in series with the four amplifiers, to implement selection and amplification on four orthogonal input signals, and the vector summation circuit synthesizes amplified signals that are output by the four amplifiers, to obtain a signal having a 360 degree (°) phase shift range.
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公开(公告)号：US10411943B2
公开(公告)日：2019-09-10
申请号：US16249383
申请日：2019-01-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huizhen Qian , Xun Luo
Abstract: The present disclosure relates to a polar phased-array transmitter and a mobile terminal. One example mobile terminal includes a baseband chip, the polar phased-array transmitter, and an antenna array. The baseband chip is configured to generate a quadrature digital baseband signal. The polar phased-array transmitter is configured to perform quadrature-to-polar conversion on the quadrature digital baseband signal to generate n amplitude signals and n phase signals, separately perform phase modulation and phase shifting on the n phase signals by using a local oscillator signal to obtain n phase modulation signals, and perform amplitude modulation and power amplification on the n phase modulation signals by using the amplitude signals to obtain n radio frequency signals. n is a natural number greater than 1. The antenna array is configured to obtain the n radio frequency signals from the polar phased-array transmitter, and transmit the n radio frequency signals.
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公开(公告)号：US10128817B2
公开(公告)日：2018-11-13
申请号：US15816163
申请日：2017-11-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huizhen Qian , Xun Luo
Abstract: A digital phase shifter includes a logic control circuit, at least four current digital-to-analog converters, at least four amplifiers, and a vector summation circuit. The logic control circuit generates four N-bit digital phase shift control signals according to an (N+2)-bit digital control source signal, and respectively inputs the four N-bit digital phase shift control signals to the four current digital-to-analog converters. The four current digital-to-analog converters are respectively connected in series with the four amplifiers, to implement selection and amplification on four orthogonal input signals, and the vector summation circuit synthesizes amplified signals that are output by the four amplifiers, to obtain a signal having a 360 degree (°) phase shift range.
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Patent Agency Ranking
公开(公告)号：US20170365903A1
公开(公告)日：2017-12-21
申请号：US15625374
申请日：2017-06-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zeming Zhang , Huizhen Qian , Xun Luo
CPC classification number: H01P1/203 , H01P1/20327 , H01P7/082
Abstract: A resonant unit and a filter, where the resonant unit includes a dielectric substrate, a metal microstrip disposed on a plane of the dielectric substrate, where the metal microstrip is used as a signal input/output port, and a defected ground structure disposed on another plane opposite to the plane of the dielectric substrate, where the defected ground structure includes a ground loop and an interdigital structure located inside the ground loop, the interdigital structure includes multiple fingers, and the ground loop or at least one finger in the interdigital structure includes at least one embedded interdigital structure. Harmonic suppression capabilities of the resonant unit and the filter can be improved, and an area can be reduced.
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公开(公告)号：US12155510B2
公开(公告)日：2024-11-26
申请号：US17826627
申请日：2022-05-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huizhen Qian , Xun Luo
Abstract: A radio frequency transmitter is provided. The radio frequency transmitter includes a radio frequency front-end and a control circuit. The radio frequency front-end includes a current source set, a compensation circuit, and a matching network. The compensation circuit may compensate for a difference of load impedance between N current source subsets in the current source set. Therefore, an impedance mismatch of the current source set may be alleviated, and a power loss of the current source set may be avoided. This helps improve the efficiency of the radio frequency transmitter.
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公开(公告)号：US10998873B2
公开(公告)日：2021-05-04
申请号：US16374724
申请日：2019-04-03
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xun Luo , Huizhen Qian
Abstract: Embodiments of this application provide a capacitor unit, an integrated capacitor, and a resonance unit. The capacitor unit includes: a conductive cavity, where an accommodation space is set longitudinally through in the conductive cavity; and a conductive core, where a first part of the conductive core and a second part of the conductive core are connected by using a via hole, the first part of the conductive core is located above or below the conductive cavity, and the second part of the conductive core is located in the accommodation space of the conductive cavity; and the conductive cavity is isolated from the conductive core by using an oxide layer or an insulation layer. The embodiments of this application can reduce impact from the outside on the capacitor unit, and therefore stability of the capacitor unit can be improved.
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公开(公告)号：US10673111B2
公开(公告)日：2020-06-02
申请号：US15965390
申请日：2018-04-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Bingzheng Yang , Huizhen Qian , Xun Luo
Abstract: A filter is provided, and the filter includes two mutually coupled slow-wave resonators. Each resonator includes a coplanar waveguide (CPW) transmission line, a tapered CPW transmission line, and a ground stub, and can generate a slow-wave feature to push a high-order harmonic wave of a baseband signal to a high frequency, so as to implement a wide stopband feature. In addition, a slow-wave effect is used to properly design a size of a filter, to reduce an entire area of the filter and reduce costs. Moreover, two resonators are coupled, to enhance passband performance of the filter, increase bandwidth, increase in-passband flatness, and reduce an insertion loss.
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公开(公告)号：US20170373363A1
公开(公告)日：2017-12-28
申请号：US15634226
申请日：2017-06-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jie ZHOU , Huizhen Qian , Xun Luo
CPC classification number: H01P5/12 , H01P1/184 , H01P3/003 , H01P5/02 , H01P5/08 , H01Q3/34 , H01Q21/0075 , H01Q21/22 , H03H7/18
Abstract: The present invention relates to the field of communications technologies and discloses a phase shifter and a feed network. The phase shifter includes at least one phase shift component. The phase shift component includes a substrate, a microstrip coupling structure disposed on a first plane of the substrate, a microstrip transmission line connected to and coplanar with the microstrip coupling structure, and a microstrip/coplanar-waveguide coupling structure, where the microstrip/coplanar-waveguide coupling structure includes a microstrip connected to and coplanar with the microstrip transmission line, and a coplanar waveguide disposed opposite to the microstrip on the substrate and coupled with the microstrip. A phase shifter using a microstrip/coplanar-waveguide coupling structure has a small volume and costs low, thereby facilitating feed network design.
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