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    Dielectric substrate with selectively controlled effective permittivity and loss tangent
    1.
    发明授权
    Dielectric substrate with selectively controlled effective permittivity and loss tangent 失效
    电介质衬底具有选择性控制的有效介电常数和损耗角正切

    公开(公告)号：US06992636B2

    公开(公告)日：2006-01-31

    申请号：US11118445

    申请日：2005-04-29

    申请人： Dennis Tebbe ,  Thomas Smyth ,  William Johnson Chappell

    发明人： Dennis Tebbe ,  Thomas Smyth ,  William Johnson Chappell

    IPC分类号： H01Q1/38

    CPC分类号： H05K1/024 ,  H01Q1/38 ,  H01Q15/006 ,  H05K1/0306 ,  H05K3/4611 ,  H05K3/4629 ,  H05K2203/063 ,  Y10T29/49016

    摘要： A substrate (300) for an RF device includes a plurality of layers (102) of dielectric material cofired in a stack. The plurality of layers (102) is formed from a material having a permittivity. Selected ones of the layers (102) have a pattern of perforations (106) formed in at least one perforated area (104). The perforated areas (104) are generally aligned with one another in the stack to lower one or more of an effective value of a permittivity and a loss tangent in a least one spatially defined region (504) of the substrate (300).

    摘要翻译： 用于RF器件的衬底（300）包括堆叠在一起的多个介电材料层（102）。 多个层（102）由具有介电常数的材料形成。 所选择的一层（102）具有形成在至少一个穿孔区域（104）中的穿孔图案（106）。 穿孔区域（104）通常在堆叠中彼此对准以降低衬底（300）的至少一个空间限定区域（504）中的介电常数和损耗角正切的有效值中的一个或多个。

    Planar filters having periodic electromagnetic bandgap substrates
    2.
    发明授权
    Planar filters having periodic electromagnetic bandgap substrates 失效
    具有周期性电磁带隙基板的平面滤波器

    公开(公告)号：US06825741B2

    公开(公告)日：2004-11-30

    申请号：US10171300

    申请日：2002-06-12

    申请人： William Johnson Chappell ,  Linda P. B. Katehi ,  Matthew Patrick Little

    发明人： William Johnson Chappell ,  Linda P. B. Katehi ,  Matthew Patrick Little

    IPC分类号： H01P120

    CPC分类号： H01P1/2005 ,  H01P1/203

    摘要： The concept of electromagnetic bandgaps (EBG) is used to develop a high quality filter that can be integrated monolithically with other components due to a reduced height, planar design. Coupling adjacent defect elements in a periodic lattice creates a filter characterized by ease of fabrication, high-Q performance, high port isolation and integrability to planar or 3-D circuit architectures. The filter proof of concept has been demonstrated in a metallo-dielectric lattice. The measured and simulated results of 2-, 3- and 6-pole filters are presented at 10.7 GHz, along with the equivalent circuits.

    摘要翻译： 电磁带隙（EBG）的概念用于开发高质量的滤波器，由于降低的高度，平面设计，可以与其他部件整体集成。 耦合周期晶格中的相邻缺陷元件产生一个滤波器，其特征在于易于制造，高Q性能，高端口隔离和与平面或3-D电路架构的可集成性。 在金属电介质晶格中已经证明了滤波器的概念证明。 2-，3-和6极滤波器的测量和模拟结果与等效电路一起呈现在10.7 GHz。