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    • 3. 发明申请
    • Waveguide-based MEMS tunable filters and phase shifters
    • 基于波导的MEMS可调谐滤波器和移相器
    • US20070287634A1
    • 2007-12-13
    • US11452114
    • 2006-06-12
    • Liwei LinFiras Sammoura
    • Liwei LinFiras Sammoura
    • C04B35/45
    • H01P1/208H01P1/182
    • An actively tunable waveguide-based iris filter having a first part including a first portion of a deformable iris filter cavity having an inlet and an outlet; a second part operatively coupled with the first part and including a second portion of the deformable iris filter cavity having a deformable membrane operatively coupled with the first portion of a deformable iris filter cavity; the first portion and the second portion together forming the deformable iris filter cavity of the tunable waveguide-based iris filter; and means for moving the deformable membrane, whereby movement of the deformable membrane changes the geometry of the deformable iris filter cavity for causing a change in the frequency of a signal being filtered by the filter. The tunable filter is fabricated using a MEMS-based process including a plastic micro embossing process and a gold electroplating process. Prototype filters were fabricated and measured with bandwidth of 4.05 GHz centered at 94.79 GHz with a minimum insertion loss of 2.37 dB and return loss better than 15 dB. A total of 2.59 GHz center frequency shift was achieved when membranes deflected from −50 μm to +150 μm.
    • 一种可主动调谐的基于波导的虹膜滤光器,其具有第一部分,该第一部分包括具有入口和出口的可变形虹膜滤光腔的第一部分; 第二部分与第一部分可操作地联接并且包括可变形虹膜过滤器空腔的第二部分,其具有可操作地与可变形虹膜过滤器腔的第一部分耦合的可变形膜; 所述第一部分和所述第二部分一起形成所述可调谐波导基虹膜滤光器的可变形虹膜滤光腔; 以及用于移动可变形膜的装置,由此可变形膜的运动改变了可变形虹膜过滤腔的几何形状,以引起被过滤器过滤的信号频率的变化。 可调滤波器使用基于MEMS的工艺制造,包括塑料微压花工艺和金电镀工艺。 原型滤波器的制作和测量带宽为4.05 GHz,中心为94.79 GHz,插入损耗最小为2.37 dB,回波损耗优于15 dB。 当膜从-50 mum偏转到+150 mum时,总共达到2.59 GHz的中心频移。
    • 5. 发明申请
    • PLASTIC WAVEGUIDE-FED HORN ANTENNA
    • 塑料波导天花板天线
    • US20100214185A1
    • 2010-08-26
    • US12513496
    • 2007-11-01
    • Firas SammouraLiwei Lin
    • Firas SammouraLiwei Lin
    • H01Q13/02C25D3/48
    • H01Q13/02C25D5/44C25D5/56H01Q13/0225
    • A plastic, waveguide-fed, horn antenna is manufactured using a three-dimensional (3D), polymeric micro hot embossing process. Two cavity resonators may be designed to reduce the impedance mismatch between the pyramidal horn antenna and the feeding waveguide. The waveguide-fed antenna may be fabricated using a self-aligned 3D plastic hot embossing process followed by a selective electroplating and sealing process to coat an approximately 8 μm-thick gold layer around the internal surfaces of the system. As such, this plastic, low-cost manufacturing process may be used to replace the expensive metallic components for millimeter-wave systems and provides a scalable and integrated process for manufacturing an array of antenna.
    • 使用三维(3D)聚合物微热压花工艺制造塑料波导管喇叭天线。 可以设计两个腔谐振器以减少金字塔形喇叭天线和馈电波导之间的阻抗失配。 波导馈电天线可以使用自对准3D塑料热压花工艺制造,随后是选择性电镀和密封工艺,以在系统的内表面周围涂覆约8μm厚的金层。 因此,这种塑料低成本的制造工艺可用于代替用于毫米波系统的昂贵的金属部件,并提供用于制造天线阵列的可扩展和集成的工艺。
    • 8. 发明授权
    • Waveguide-based MEMS tunable filters and phase shifters
    • 基于波导的MEMS可调谐滤波器和移相器
    • US07728701B2
    • 2010-06-01
    • US11452114
    • 2006-06-12
    • Liwei LinFiras Sammoura
    • Liwei LinFiras Sammoura
    • H01P1/208H01P1/18H01P7/06
    • H01P1/208H01P1/182
    • An actively tunable waveguide-based iris filter having a first part including a first portion of a deformable iris filter cavity having an inlet and an outlet; a second part operatively coupled with the first part and including a second portion of the deformable iris filter cavity having a deformable membrane operatively coupled with the first portion of a deformable iris filter cavity; the first portion and the second portion together forming the deformable iris filter cavity of the tunable waveguide-based iris filter; and means for moving the deformable membrane, whereby movement of the deformable membrane changes the geometry of the deformable iris filter cavity for causing a change in the frequency of a signal being filtered by the filter. The tunable filter is fabricated using a MEMS-based process including a plastic micro embossing process and a gold electroplating process. Prototype filters were fabricated and measured with bandwidth of 4.05 GHz centered at 94.79 GHz with a minimum insertion loss of 2.37 dB and return loss better than 15 dB. A total of 2.59 GHz center frequency shift was achieved when membranes deflected from −50 μm to +150 μm.
    • 一种可主动调谐的基于波导的虹膜滤光器,其具有第一部分,该第一部分包括具有入口和出口的可变形虹膜滤光腔的第一部分; 第二部分与第一部分可操作地联接并且包括可变形虹膜过滤器空腔的第二部分,其具有可操作地与可变形虹膜过滤器腔的第一部分耦合的可变形膜; 所述第一部分和所述第二部分一起形成所述可调谐波导基虹膜滤光器的可变形虹膜滤光腔; 以及用于移动可变形膜的装置,由此可变形膜的运动改变了可变形虹膜过滤腔的几何形状,以引起被过滤器过滤的信号频率的变化。 可调滤波器使用基于MEMS的工艺制造,包括塑料微压花工艺和金电镀工艺。 原型滤波器的制作和测量带宽为4.05 GHz,中心为94.79 GHz,插入损耗最小为2.37 dB,回波损耗优于15 dB。 当膜从-50μm偏转到+150μm时,总共获得2.59GHz的中心频移。