Low loss glass ceramic composition with modifiable dielectric constant
    5.
    发明授权
    Low loss glass ceramic composition with modifiable dielectric constant 失效
    具有可变介电常数的低损耗玻璃陶瓷组合物

    公开(公告)号:US06436332B1

    公开(公告)日:2002-08-20

    申请号:US09705139

    申请日:2000-11-02

    IPC分类号: C04B35195

    摘要: The dielectric constant of low loss tangent glass-ceramic compositions, such as cordierite-based glass ceramics, is modified over a range by selective addition of high dielectric constant ceramics, such as titanates, tantalates and carbides and metals, such as copper. The low loss tangent is retained or improved over a range of frequencies, and the low CTE of the glass-ceramic is maintained. BaTiO3, SrTiO3 and Ta2O5 produce the most effective results.

    摘要翻译: 通过选择性地添加高介电常数陶瓷,例如钛酸盐,钽酸盐,碳化物和金属如铜,可以在一定范围内改变低损耗相切玻璃 - 陶瓷组合物的介电常数,例如堇青石系玻璃陶瓷。 在一定范围的频率范围内保持或改善低损耗角正切,保持玻璃陶瓷的低CTE。 BaTiO3,SrTiO3和Ta2O5产生最有效的结果。

    Land grid array alignment and engagement design
    6.
    发明授权
    Land grid array alignment and engagement design 失效
    土地格栅阵列对齐和接合设计

    公开(公告)号:US06354844B1

    公开(公告)日:2002-03-12

    申请号:US09459552

    申请日:1999-12-13

    IPC分类号: H01R1200

    摘要: A Land Grid Array electronic package having an array of contact pads is connected to a corresponding array of contact pads on a circuit board through a matching array of conductive pins of a flexible interposer. Alignment of the electronic package to the flexible interposer and flexible interposer to the circuit board is obtained by registration of alignment components to the contact pads and conductive pins. A pair of alignment components, such as pin-like alignment structures, on selected pads of both the electronic package and circuit board mate within alignment holes at the sites of corresponding pin locations in said flexible interposer. Alternatively, the pin-like alignment structures on the electronic package can be extended to pass through the said alignment holes of said flexible interposer into alignment holes which replace the pin-like alignment structure on said circuit board.

    摘要翻译: 具有接触焊盘阵列的焊盘阵列电子封装通过柔性插入器的导电引脚的匹配阵列连接到电路板上的相应的接触焊盘阵列。 通过将对准部件配准到接触焊盘和导电销来获得电子封装与柔性插入件和柔性插入件到电路板的对准。 在电子封装和电路板的选定焊盘上的一对对准部件,例如针状对准结构,在所述柔性插入器中的相应引脚位置的位置处的对准孔内匹配。 或者,可以将电子封装上的针状对准结构延伸穿过所述柔性插入件的所述对准孔,以对准替代所述电路板上的针状对准结构的对准孔。