ID 原文 译文
12724 测试结果表明：该天线Si,22 8 -10 dB的阻抗带宽为58.2 % (2. 11〜3. 84 GHz)和8. 9 % (4. 72〜5. 16 GHz)，端口隔离度(|知M )高于#5 dB，双 频段内的平均增益分别为8.7 dBi和7.2 dBi%天线E面的半功率波瓣宽度在整个工作频带内的变化为61° 士 6，交叉极化比高于#0 dB。 As a result, the measured results show good achevements of dual-wdeband of 58.2%(2.11-3.84GHz) and 8. 9%(4. 72-5. 16 GHz) with $11,228-10 dB, high isolation (\S12 \ >25 dB) and high gain (9. 3 dBi and 7. 2 dBi) in the these two bands. In addition, a stable radiation pattern with halEpower beam width (HPBW) of 61°土6 and high cross polarization discrimination (XPD) (>20 dB) on the E-plane are realzed over the dual-band.
12725 仿真与测试结果达到了良好的一致性，该天线结构简单、性能优良，可以作为 LTE/5G室内基站天线的良好的候选。 Moreover, with simple structure and excellent performance, the proposed antenna can be used as a good candidate for the LTE/5G microcell base station antenna.
12726 针对导航通信一体化系统面临的在有限带宽内实现高速率信号传输和高精度测量的难题，结合正交频分调制与恒包络调制思想，提出了多载波二进制偏移载波(multi-carrier binary offset carrier, MC- BOC)调制，其能够有效利用频谱资源，提升信号的接收性能，并具备恒包络特性。 How to realVe high speed data transmission and high precision measurement in a limited frequency band is a problem confronted by navigation & communication integrated systems. In this paper, a new modulation, named muti-carrier b nary offset carrier (MC-BOC) modulation, is presented by combining the orthogonally frequency division modulaton and constant envelope modulation. The modulation can improve the spectra! efficiency and the receiving performance, and also have the characteristics of constant envelope.
12727 分析北斗无线电测向卫星 业务(radio determination satellte servce, RDSS)采用该调制后的性能，结果表明：该调制方式具备优良的 通信性能、抗干扰能力、测距性能以及抗多径能力。 Performance of radio determination satellte servce(RDSS) signal adopting the proposed modulaton is analyzed, and the results show that MC-BOC modulaton has good data demodulation, ranging, anti-jamming, and anti-mutipath performances.
12728 本文提出的MC-BOC调制技术为导航通信一体化系统信号体制设计和优化提供了一种可行的参考方案，可以用于北斗RDSS和站间时间同步/数据传输网络的信号设计。 The new modulation provides a solution to signal design and optimzaton for navigation & communication systems.
12729 为有效应对现代雷达对人防目标的侦察威胁，提高伪装防护能力!以人防工程口部为研究对象，综合运用模拟仿真与缩比模型实测的方法对口部目标雷达回波特性对比分析。 In order to effectively deal with the reconnaissance threat of modern radar to air defense targets and improve the ability of camouflage protection, this paper takes the civll air defense engineering cave as the research object, and uses the methods of simulation and scalmg modll measurement to compare and analyze the characters- tics of radar echo.
12730 通过获取来自不同威胁方向及不同施工状态下目标的回波热图，结合目标发现概率!研究明确了在回波对比度与方向性两方面存在暴露征候。 By acquiring the echo thermal maps of targets in different threat directions and construction conditions, combining with the detection probability, the exposure symptoms in echo contrast and orientation are corr firmed.
12731 在此基础上提出伪装思路，即采用随机起伏仿形薄壳与吸波涂层相结合的工程应用方法。 On this basis, an engmeermg application method combmmg random undulating proflled thin shells with absorbing coatings is proposed.
12732 经测试验证，该方法在改善回波特性上效果明显，在降低回波对比度的同时也使得各方向回波更为均匀，对雷达波多角度入射威胁起到良好伪装效果，为伪装设计提供了有力技术支撑。 The test results show that the method is effective in improvng the echo characteristics, and it is manfested in reducing echo contrast and makes the echoes in all directions more uniform at the same time. Meanwhlle, it is effective to counter the threaten of radar wave from mult-angle incidence, thus it can provd techncal support for camouflage desgn.
12733 为了解决F类和逆F类(F-1类)功率放大器设计过程中受晶体管寄生参数影响，导致功放效率低以及输出匹配电路结构复杂的问题，提出了一种新型的输出匹配电路结构。 In order to solve the problem that the class-F and the inverse clas斷F (class-F-1) power amplifiers (PAs) affected by the parasitics of the packaged transistor, resulting in a low efficiency performance and complcated crcut structure, a novel output matchJng crcut Js proposed.