ID 原文 译文
13834 设计了一款基于微带线的高隔离的新型四端口双工器, 由两组中心频率不同的滤波器构成, 每一组滤波器包括相位分别为±90°的两个滤波器。 A high isolated 4-port diplexer based on microstrip line is presented in this paper. The diplexer is composed of two pairs of filters operating different frequency, each pair include 2 filters with phase of 90° and-90°.
13835 相对于传统的三端口双工器, 得益于该双工器的新型四端口电路拓扑, 使得泄露信号经过两路传输后形成相位相差180°的信号, 最终相互抵消, 进而达到提高隔离度的目的。 The diplexer can achieve an isolation enhancement compared with some reported 3-port diplexers, resulting from the 4-port circuit topology and difference of phase 180° suppresses the leakage between the two channels.
13836 另外, 本设计所需要的180°移相由滤波器本身结构实现, 不需要额外的移相电路, 因而使得电路更加简单紧凑。 The filter of proposed 4-port diplexer is based on half-wavelength open-loop resonator structure, which enables the inverter without incurring any extra circuit footprint.
13837 为验证方法的有效性, 设计了一款工作在1.8GHz和2.1GHz的四端口双工器并进行了加工, 通过对双工器实物的测量, 在1.8GHz和2.1GHz的隔离度分别达到了50.9dB和43.5dB, 相对于传统三端口双工器分别提高了9.7dB和12.8dB, 显著提升了双工器的隔离度。 For validation, the diplexer with operating frequencies of 1.8 GHz and 2.1 GHz is designed, fabricated and measured. The experimental results show that the 4-port diplexer has good in-band performance and high isolation of 50.9 dB and 43.5 dB.Compared to the traditional 3-port diplexer, the 4-port diplexer increased by 9.7 dB and 12.8 dB respectively, which indicates that the novel diplexer increased the isolation significantly.
13838 为解决大功率通信天线因末端开口处电场畸变严重、局部场强过高导致介质损耗发热量过大进而使天线末端易发生断裂问题, 通过对天线损耗发热的理论分析和建立天线末端三维电准静态场计算模型对天线介质降损与末端电场的均化特性开展了研究。 To solve the breakage failure of antenna caused by excessive heat loss of dielectric loss at the opening of the end of the high-power communication antenna, a theory analysis about the heat generation mechanism of dielectric loss is carried out and a 3D quasi-static electrical field is established to study the decreasing method of heat generation caused by dielectric loss and the electric field homogenization at the terminal opening of high power communication antenna.
13839 得到如下结论:天线末端介质发热量与电场强度的平方成正比关系；天线外护套采用半导电材料、对天线末端承力金具进行倒角均可有效均化天线末端畸变电场；在天线末端安装均压金具是解决天线损耗发热断裂最有效的方法。 The research results show that: the power of dielectric heat loss has the quasi square relationship with the electric filed strength;using semi-conductive as the outer sheath material and increasing the radius of curvature of the load-bearing fittings are the effective methods to ameliorate the electric field distortion; installing the grading fittings at the end of the antenna is regard as the most promising and effective method to solve the electric field distortion problem fundamentally.
13840 在福建省太姥山和浙江鹤顶山开展了GPS掩星观测实验并成功获取山基掩星观测数据, 对掩星事件进行了分析和统计。 We obtained the data of mountain-based GPS radio occultation and statistically analyzed the occultation events based on the GPS occultation observation experiment on Mt.Tailao of Fujian Province and Mt.Heding of Zhejiang Province.
13841 阐述了利用山基掩星观测数据计算大气折射指数和电波弯曲角的原理和算法, 基于山基反演数据与欧洲中期天气预报中心 (European centre for medium-range weather forecasts, ECMWF) 数据构建电波传播的直接折射模型和一次反射模型来计算任意两点之间的电波到达角。 This paper describes an algorithm and principle of calculating atmospheric refractivity and arrival angle.The directly refraction model and the reflection model of radio wave propagation are used to calculate the arrival angle between any two points by using the mountainbased inversion data and European Centre for Medium-range Weather Forecasts (ECMWF) data to construct the refractivity model.
13842 结果表明：山基反演数据计算的大气折射率剖面反演准确度在95%以上, 在1km下的近距离计算中基于山基反演数据的直接折射模型优于一次反射模型, 山基反演数据的电波到达角模型优于ECMWF数据模型, 文中创建的两种电波到达角计算模型对模拟两点之间的电波传播路径和真实电波信号的调整接收具有重要指导意义。 The results show that the inversion accuracy of the atmospheric refractivity profiles is above 95%, and the direct refraction model based on the mountain-based inversion data is better than the reflection model in the short distance calculation at 1 km.The arrival angle model of the mountain-based inversion data is superior to the ECMWF data model.The two types of angle-of-arrival calculation models has important guiding significance on simulating the propagation path between two points and the reception and adjustment of the real radio signal.
13843 针对一种高性能宽频带自跟踪馈源的使用需求, 提出了由8路天线单元合成双圆极化和差波束的新型设计思路。 To fulfill the demand of wideband high-performance auto-tracking feed, a feed made up of eight logic periodic monopole dual circular polarization beam antennas is designed.