分倍器

Based on the models presented above, this paper provides the new design of the E1 to VC-4 mapping Application Specific Integrated Circuit that named MXLO21E1-3. The innovations of the chip are listed below.(1) One chip can fulfill 21 E1 tributaries to demultiplex and multiplex from and to two VC-4 buses that transfer in different directions (2) Put forward the new design scheme which combined the ADM system with TM system (3) Adopted the advanced pointer processor which remarkably restrain the output wander (4) Timing recovery is realized in the chip, which reduce the peripheral circuits The characters listed above made the MXLO21E1-3 advanced in the scale, system performance, and application allover the world.

在所建立的SDH系统集成模块概念的基础上，本文提出了一个新的SDH映射芯片MXLO21E1-3的方案设计，该方案创新性的特点在于：（1）单片实现21个E1双总线映射，其功能相当于目前国际应用最多的同类芯片的5倍（2）实现分插复用器ADM和终端复用器TM合二为一的系统设计（3）采用先进的指针处理，显著减小漂移（4）片内E1定时提取，进一步减少外围电路上述特点使该芯片在功能规模上，系统性能和应用上都具有国际领先水平。

To verify this method, a 0.915/2.45 GHz dual band rat-race hybrid and a 0.915/2.58 GHz branch-line coupler were designed, fabricated, and measured.

此方法运用於双频段鼠圈式功率分配器和分枝线耦合器(Branch-line)，第一频段设计在0.915 GHz，并将原三倍频点移至2.45和2.58 GHz，形成双频特性。

The ferroelectrics with photoelectronic, acoustooptic, and nonlinear optical effects are good candidate for constructing optical switches, power splitters, couplers, filters, frequency doublers, and integrated photonic devices. Especially, the newly developed fabrication technology for ferroelectric-based photonic crystals renders a perspective application of ferroelectric materials in photonic band-gap engineering.

具有热释电效应的铁电物质是制作新一代非致冷红外探测器的理想材料；利用铁电体的电光、声光和非线性光学效应，可构建光开关、功分器、耦合器、滤波器、倍频器等无源光学元器件或集成光子器件；特别是近年来发展的铁电光子晶体制备技术对推动和拓展铁电氧化物在光子带隙工程领域的应用带来了新的希望。

This series of products with unique designs, such as: local oscillator frequency multiplier / divider, two low-noise amplifier gain settings, can effectively extend the standby time of low current call mode.

该系列产品采用独特的设计，如：本振倍频器/分频器、两种低噪声放大器增益设置、可有效延长手机待机时间的低电流呼叫模式。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。