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1.An improvement was made in the optimization method for the forward gain of Yagi-Uda antenna through adjusting the inter-element spacing by tierative perturbation.
就文献中八木天线前向增益优化的单元间距微扰迭代法 ,提出了一种改进的处理方法。收藏指正
2.This low noise amplifier provides a forward gain of 26.3 dB with a noise figure of only 1.9 dB while drawing about 5.8 mA current from 2.5 V supply voltage. The stack-style structure,which reuses the bias current,guarantees low power dissipation(about 14.5 mW) and high reverse isolation of about-40 dB.This LNA achieves IIP3 of-15 dBm and 1-dB compression of-25 dBm.
测试结果表明,在2.5 V供电时,放大器可以提供约26.3 dB的前向增益,噪声系数约为1.9 dB,放大电路从电源电压上抽取5.8 mA左右的工作电流,反向隔离度达到-40 dB,放大器的IIP3约为-15 dBm。收藏指正
3.Results from simulation show that the circuit has a forward power gain of 15.67 dB,a noise figure of 2.88 dB,an IIP3 of-0.21 dBm,and a power dissipation of 25.79 mW.
结果表明,该电路的正向功率增益为15.67 dB,NF为2.88 dB,IIP3为-0.21 dBm,功耗为25.79 mW。收藏指正
4.The results indicate that compared with the antenna without reflecting structure, the proposed antenna achieves broader impedance bandwidth, increases the forward radiation gain and has stronger backward radiation suppression.
结果表明，与没有地平面反射结构的天线相比，该印制偶极子天线增加了抗带宽，提高了前向辐射增益，抑制了后向辐射。收藏指正
5.as an effort to meet commercial requirements, the package and the BSD protection are included, design methodology is discussed from the aspects of noise optimization, impedance match, forward voltage gain and linearity, and harmful effect of parasitics is studied hi detail;
为满足实用性的需要，考虑了封装及静电保护电路(ESD)，从噪声优化、阻抗匹配、增益及线性度的角度讨论了电路的设计方法，重点分析了寄生参数对电路性能的恶化；收藏指正
6.A very long forward pass intended to gain great yardage in a single play.
长传在一次传球中的一个长距离传球，以便增加总码数收藏指正
7.With a intermediate power density, the efficiency of energy conversion to forward stimulated Raman scattering approached 38%. The backward Stokes stimulated emission was observed, and the backward wave intensity was about 80% of the forward scattering intensity. The gain of the forward scattering wave was measured and was about 2.5 × 10-3cm/ MW, the spatial distribution and the beam divergence of the forward and backward waves were measured.
在中等泵浦功率密度下,受激喇曼斯托克斯辐射前向波能量转换效率达38％,观察到了后向斯托克斯受激辐射,后向波强度是前向散射波强度的80％,测量了前向散射的增益为2.5×10_(-3)厘米/兆瓦,测量了前向、后向散射光束的空间分布。收藏指正
8.Based on broad band and low amplitude of the leaking signal, it brings forward a broad band, high-gain circuit based on uPC1658, and introduces the cascade form which can provide approximately 25db gain for the system.
基于泄漏信号的宽频带和低幅值,提出一种基于uPC1658的宽频带高增益电路,并给出级联形式,可对系统提供约25db的增益。收藏指正
9.The Optimization Between Processing Gain and Coding Gain in Convolution Coded Forward Error-correction CDMA System
卷积码前向纠错CDMA系统中处理增益与编码增益的优化收藏指正
10.A model, based on model reference adaptive system (MRAS),of adaptive optimization adjusting PID coefficients is put forward. The computer simulation test shows that the method is practicable and gain good results. To adopt the method can solve such problem that the coefficients of PID are too difficult to determine .
提出一种基于参考模型的自适应优化实时调节 PID系数的方法 ,并结合实际控制对象进行了计算机仿真 ,仿真结果表明 ,采用这种方法可以解决 PID调节器系数难以确定的困难。收藏指正
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