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186 条记录 (耗时 0.017 秒)

    Single chip power amplifier and envelope modulator
    1.
    发明申请
    Single chip power amplifier and envelope modulator 有权
    单芯片功率放大器和包络调制器

    公开(公告)号：US20050122164A1

    公开(公告)日：2005-06-09

    申请号：US10869987

    申请日：2004-06-17

    申请人： Per-Olof Brandt ,  Jonas Persson

    发明人： Per-Olof Brandt ,  Jonas Persson

    IPC分类号： H03F1/02 ,  H03F1/30 ,  H03F1/32 ,  H03F3/36 ,  H03F3/38

    CPC分类号： H03F1/30 ,  H03F1/0211 ,  H03F1/0261 ,  H03F1/0266 ,  H03F1/0272 ,  H03F1/3247 ,  H03F2200/102 ,  H03F2200/324 ,  H03F2200/447 ,  H03F2200/451 ,  H03F2200/474 ,  H03F2200/504

    摘要： RF polar modulation circuit has a self-compensated temperature stable envelope controller and self-compensated temperature stable power amplifier bias. The circuit has an adaptive current-to-voltage modulation interface with pre-distortion compensation capability. AM/PM distortion are compensated for envelope dependent power amplifier transistor biasing. Automatic compensation is provided for RF loads that are higher or lower than nominal loads. This Abstract is provided to comply with rules requiring an Abstract that allows a searcher or other reader to quickly ascertain subject matter of the technical disclosure. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

    摘要翻译： RF极性调制电路具有自补偿温度稳定的包络控制器和自补偿温度稳定的功率放大器偏置。 该电路具有具有预失真补偿能力的自适应电流 - 电压调制接口。 补偿AM / PM失真，用于封装相关的功率放大器晶体管偏置。 对于高于或低于标称负载的RF负载，提供自动补偿。 提供本摘要以符合要求摘要的规则，允许搜索者或其他读者快速确定技术公开内容的主题。 提交本摘要的理解是，它不会用于解释或限制权利要求的范围或含义。

    Photographic elements comprising complexes of titanium dioxide and an organic ligand
    2.
    发明授权
    Photographic elements comprising complexes of titanium dioxide and an organic ligand 失效
    包含二氧化钛和有机配体的复合材料的摄影元素

    公开(公告)号：US3788853A

    公开(公告)日：1974-01-29

    申请号：US3788853D

    申请日：1971-04-19

    申请人： EASTMAN KODAK CO

    发明人： GILMAN P ,  HAEFNER J

    IPC分类号： G03C1/705 ,  G03G5/06 ,  G03G5/09 ,  H03F3/343 ,  H03F3/36 ,  G03C1/76

    CPC分类号： H03F3/343 ,  G03C1/705 ,  G03G5/0698 ,  G03G5/09 ,  H03F3/36 ,  Y10S430/148

    摘要： PHOTOGRAPHIC ELEMENTS INCORPORATING A LIGHT-SENSITIVE COLORED COMPLEX OF TITANIUM DIOXIDE AND AN UNSATURATED ORGANIC LIGAND COMPOUND CONTAINING AT LEAST ONE POLYDENTATE CHELATING GROUP, SUCH AS 8-HYDROXY QUINOLINE COMPOUNDS, AROMATIC VICINAL POLYOL COMPOUNDS AND THE LIKE UNSATURATED ORGANIC COMPOUNDS HAVING AT LEAST TWO CLOSELY POSITIONED ELECTRON-DONATING ATOMS, CAN EXHIBIT A SENSITIVITY TO VISIBLE LIGHT RADIATION WHICH IS OF AN EFFICIENCY EQUIPMENT TO THE ULTRAVIOLET LIGHT SENSITIVITY OF UNSENITIZED TITANIUM OXIDE. AROMATIC VICINAL POLYOLS ARE PREFERRED. SUCH SENSITIZATION OCCURS BOTH WITH BINDERLESS, VACUUM-DEPOSITED TITANIUM DIOXIDE AND WITH PARTICULATE TITANIUM DIOXIDE WHICH IS DISPERSED IN A BINDER MATERIAL.

    摘要翻译： 提供了用于生产具有增强的细胞培养性能，例如细胞生长，细胞活力和蛋白质生产性质的无血清动物细胞培养基的方法。 根据本发明的方法，通过向培养基中提供添加剂，可以增强包括组合物如无机盐，葡萄糖，脂肪酸，氨基酸和维生素在内的标准无血清培养基制剂的细胞培养性能。 在一个实施方案中，添加剂可以通过酸或碱催化的磷酸甘油酯水解产生。

    Combined temperature compensation and zero-offset control
    3.
    发明授权
    Combined temperature compensation and zero-offset control 失效
    组合温度补偿和零偏控制

    公开(公告)号：US3753139A

    公开(公告)日：1973-08-14

    申请号：US3753139D

    申请日：1971-05-13

    申请人： BELL & HOWELL CO

    发明人： SPENCER W

    IPC分类号： H03F1/30 ,  H03F3/36

    CPC分类号： H03F1/30

    摘要： A temperature compensating and zero-offset control circuit for an operational amplifier includes a floating diode in combination with a potentiometer. The diode exhibits a repeatable temperature coefficient which is a negative one at the anode and a positive one at the cathode. The zero-offset is accomplished by adjusting the dc level at which the diode floats with reference to the dc level of the amplifier. The output of the circuit is applied as one of the feedback inputs to the amplifier.

    摘要翻译： 用于运算放大器的温度补偿和零偏移控制电路包括与电位器组合的浮动二极管。 二极管表现出可重复的温度系数，其在阳极处为负极性，在阴极处为正的温度系数。 通过调整二极管浮动的直流电平，参考放大器的直流电平来实现零偏移。 该电路的输出作为反馈输入之一被应用于放大器。