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:
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:
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:
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。