ID 原文 译文
12754 利用中国境内6条链路2015年4月和2018年1月的观测结果，对IQU 方法、中国区域精细化预测方法以及本文所述方法进行对比分析，结果显示本文所述OWF-MUF和HPF- MUF 的转化因子在预测精度上较IQU方法提升了 0. 029 0和0. 007 3，较中国区域精细化预测方法提升了 0. 003 4和0. 007 5，证明本研究可为HF频率预测精度提供技术支撑。 And the spatial distribution over East Asia was reconstructed by the improved Kriging method. Using the systematc observation which was obtaned by six circuits received in Shenyang and Jingyang durng Aprl 2015and January 2018 , the predcton error of the proposed method was compared wth other methods.The result showthat the predctng accuracy is effectvely mproved by us ng the proposed method. Specially, the converson factors of OWF-MUF and HPF-MUF for the proposed have significantly improved the average root-mean-square error by 0.029 0and 0.007 3compared wth the ITU method, and 0. 003 4 and 0. 007 5 compared with China's regional refined prediction method. This study provides potential support for improvng the accuracy for high frequency communication.
12755 介绍了一款基于55 nm CMOSエ艺!带温度补偿电路的Ka波段堆叠高效功率放大器(power amplifier, PA)。 Ths paper presents a Ka-band stacked hgh-effcency power amplfer(PA) with a temperature compensaton circuit in 55 nm CMOS technology.
12756 采用了一种新型的针对晶体管堆叠结构的温度补偿电路，该补偿电路由两个二极管和四个电阻组成，结构简单，易于实现。 A novel temperature compensaton circuit for the stacked PA is proposed. The compensaton circuit consists of two diodes and four resstors which is easy to implement.
12757 通过调整堆叠放大器各个栅极偏置电路中的电压，使得PA随温度变化的增益和输出功率得到有效补偿，增强了电路的可靠性和热稳定性。 By optimzing the gate voltage of each layer in the bias circuit of the stacked PA, the gain and output power of the stacked PA with temperature variation are effectvely compensated, which enhances the relablty and thermal stablty of the circuit.
12758 基于Agllent ADS软件的版图仿真结果显示：电路的最大输出功率为20.1 dBm，频带内功率附加效率(power additional efficiency, PAE)为20%〜 30%，大信号功率ー1 dB带宽为15 GHz(46% )。 The simulaton results based on Aglent ADS software show that the maximum output power is 20. 1 dBm, 20%- 30% of power added efficiency (PAE) is achieved in the entire band, and the large signal power -1 dB bandwidth is 15 GHz (46%).
12759 在ー40 °C到125 °C的温度范围内,采用新型温补偏置电路与传统偏置电路相比，小信号增益的温度波动从2.2 dB改善到0.1 dB，显著提高了功放的热稳定性,证明了所提出的温度补偿电路对于在宽温度范围内校正功率放大器增益变化的有效性。 The temperature fluctuaton of the small s gnal gan s mproved from 2.2dB to 0.1dB n the temperature range from -40 °C to 125 °C compared with conventional bias circuits. It has been demonstrated that the presented temperature-compensation circuit is effective for correcting gain variation of a power amplifier in a wide temperature range.
12760 针对飞机直流270 V至直流28V电源变换器的应用需求，分析了电源变换器输入端的传导及辐射电磁干扰源。 To meet the application requirements of the DC 270 V to DC 28 V power supply converter, a design procedure is proposed to suppress electromagnetic mterference, caused by conduction and radation at the input of the power converter.
12761 通过对电源变换器的电磁干扰(electromagnetic interference,EMI)频谱进行分析，确定了滤波器的参数。 By analyzing the electromagnetic interference spectrum of the power supply converter, the filter parameters are calculated.
12762 为了抑制滤波器振荡，提出在差模电感两端并联电阻电感网络的方法，替代使用液态铝电容的传统方法，提升滤波器的可靠性。 To suppress filter oscllaton, a method through arranging resistance-inductance network in parallel at both ends of the differential mode inductor is proposed, and it replaces the traditional method that adopted liquid alum inum capactance and makes the reliability of the fllter improved.
12763 根据差模电感中电流直流分量远高于交流分量的特点，提出采用扁铜漆包线来实现绕组的方法，使差模电感的体积降低。 Due to the DC component of current in the differential mode inductor is much hgher than the AC component, the enameled flat copper wre s adopted to reel the wndng to reduce the volume of differential mode inductance.