Power amplifier
    41.
    发明申请
    Power amplifier 失效
    功率放大器

    公开(公告)号:US20050046477A1

    公开(公告)日:2005-03-03

    申请号:US10964762

    申请日:2004-10-15

    IPC分类号: H03F1/32 H03F1/26

    CPC分类号: H03F1/3247 H03F2200/102

    摘要: A power amplifier capable of compensating for distortion by pre-distortion and achieving a large distortion suppressing effect even if IM3L components and IM3U components occurring at the power amplifier have a large level difference. A power amplifying circuit 117 amplifies an original signal. An envelope detector 119 generates an envelope signal having components identical to envelope components included in the original signal. Based on the original signal a distortion signal generating circuit 112 generates a distortion signal for canceling distortion components occurring while the original signal is amplified by the power amplifying circuit 117. In a power combiner 116, the envelope signal is injected to the original signal, thereby eliminating the asymmetric characteristic of the distortion components. In the power amplifying circuit 117, the distortion signal is injected to the original signal, thereby suppressing the distortion components.

    摘要翻译: 功率放大器能够通过预失真来补偿失真,并且即使在功率放大器处出现的IM3L分量和IM3U分量具有较大的电平差,也能实现大的失真抑制效果。 功率放大电路117放大原始信号。 包络检测器119产生具有与包含在原始信号中的包络分量相同的分量的包络信号。 基于原始信号,失真信号发生电路112产生用于消除由功率放大电路117放大原始信号时发生的失真分量的失真信号。在功率合成器116中,将包络信号注入原始信号,从而 消除了失真分量的不对称特性。 在功率放大电路117中,将失真信号注入原始信号,从而抑制失真成分。

    Glass suitable for optical functional elements and process for producing same
    42.
    发明授权
    Glass suitable for optical functional elements and process for producing same 失效
    玻璃适用于光学功能元件及其制造方法

    公开(公告)号:US06645893B2

    公开(公告)日:2003-11-11

    申请号:US09788663

    申请日:2001-02-21

    IPC分类号: C03C1400

    CPC分类号: C03C14/006

    摘要: A glass includes (a) a matrix containing a compound of at least one nonmetallic element; and (b) a particle selectively formed in the matrix. This particle is made of the at least one nonmetallic element. A process for producing such glass includes (a) providing a blank glass containing a compound of at least one nonmetallic element; (b) condensing a pulsed laser beam to a focal point in the blank glass such that a particle is selectively formed in the blank glass at a position corresponding to the focal point, the particle being made of the at least one nonmetallic element dissociated from the compound; and (c) moving the focal point in the blank glass to produce a pattern of the particle. The glass is suitable for optical functional elements.

    摘要翻译: 玻璃包括(a)含有至少一种非金属元素的化合物的基质; 和(b)在基质中选择性地形成的颗粒。 该颗粒由至少一种非金属元素制成。 制造这种玻璃的方法包括(a)提供含有至少一种非金属元素的化合物的坯料玻璃; (b)将脉冲激光束聚焦到坯料玻璃中的焦点,使得在对应于焦点的位置处,在坯料玻璃中选择性地形成颗粒,该颗粒由从至少一个非金属元素分离的至少一个非金属元素 复合; 和(c)移动坯料玻璃中的焦点以产生颗粒的图案。 该玻璃适用于光学功能元件。

    Power amplifier with coupler for cross-coupling amplifiers for reduction of differential frequency component
    43.
    发明授权
    Power amplifier with coupler for cross-coupling amplifiers for reduction of differential frequency component 失效
    具有用于交叉耦合放大器的耦合器的功率放大器,用于降低差分频率分量

    公开(公告)号:US06545542B2

    公开(公告)日:2003-04-08

    申请号:US09982882

    申请日:2001-10-22

    IPC分类号: H03F304

    摘要: A power amplifier that reduces intermodulation distortion generated by the amplifier while reducing the number of parts is provided. A power amplifier comprises a first balun, to which a combined signal combining two signals of different frequencies is inputted, and which outputs, based on the combined signal, the first and the second signal whose phase are opposite; a first amplifier that outputs the first amplified signal containing the differential frequency component comprising the difference of the frequencies of two signals from the first signal; a second amplifier that outputs the second amplified signal containing the component comprising the difference of the frequencies of two signals from the second signal; and a second balun that outputs the combined signal of the first and the second amplified signals. The component contained in the first and the second amplified signal are inputted via the second and the first amplifier, respectively, to reduce the component.

    摘要翻译: 提供了减少放大器产生的互调失真同时减少部件数量的功率放大器。 功率放大器包括第一平衡 - 不平衡变换器,组合了两个不同频率的信号的组合信号,并且基于组合信号输出相位相反的第一和第二信号; 第一放大器,其输出包含来自第一信号的两个信号的频率差的差分频率分量的第一放大信号; 第二放大器,输出包含来自第二信号的两个信号的频率差的分量的第二放大信号; 以及第二平衡 - 不平衡转换器,其输出第一和第二放大信号的组合信号。 分别通过第二放大器和第一放大器输入包含在第一和第二放大信号中的分量以减小分量。

    Method of manufacturing coated paper for printing
    44.
    发明授权
    Method of manufacturing coated paper for printing 失效
    制造用于印刷的涂布纸的方法

    公开(公告)号:US06458413B1

    公开(公告)日:2002-10-01

    申请号:US09578059

    申请日:2000-05-24

    IPC分类号: B05D100

    摘要: The method of making a coated paper having a thermal shrinkage force (R), which satisfies the following relationship 0≦R≦45 gf, includes coating a paper web on both sides with an aqueous solution of polyvinyl alcohol to form a coated paper web, drying the coated paper web to form a base paper with a polyvinyl alcohol coating having a coating weight on a dry basis of 0.5 to 5.0 g/m2 per side of the base paper and then applying a coating composition composed of an adhesive and at least one inorganic pigment to the base paper having the polyvinyl alcohol coating, followed by drying in order to form a coating layer on the base paper. The aqueous solution of the polyvinyl alcohol preferably has a viscosity of from 100 to 2000 mPa·s measured with a Brookfield viscometer at 60 rpm and 20° C. and the polyvinyl alcohol dissolved in the aqueous solution has a saponification degree of not less than 85 mol %. The base paper preferably has an air resistance of 1000 seconds or higher based on the measurement pursuant to JIS-P-8117.

    摘要翻译: 制造具有满足以下关系0 <= R <= 45gf的热收缩力(R)的涂布纸的方法包括用聚乙烯醇水溶液在两侧涂布纸幅以形成涂布纸 将干燥该涂布纸幅的干燥纸与干燥基重为0.5-5.0g / m 2的涂布重量的聚乙烯醇涂料形成原纸,然后涂布由粘合剂组成的涂料组合物 至少一种无机颜料到具有聚乙烯醇涂层的原纸上,然后干燥以在原纸上形成涂层。 聚乙烯醇的水溶液的粘度优选在布鲁克菲尔德粘度计以60rpm和20℃测定的粘度为100-2000mPa.s,溶解在该水溶液中的聚乙烯醇的皂化度不低于85 mol%。 基于根据JIS-P-8117的测量,原纸优选具有1000秒或更高的空气阻力。