Application of Wavelet Transformation to Antenna Near Field Testing 小波变换在天线近场测试中的应用研究
Finally it points out the development direction about Smart antenna field. 最后,提出了智能天线发展的方向。
Analysis of Effect of Launching Tower on Vertically Polarized Dipole Antenna Field 发射塔体对垂直极化偶极子天线场形的影响分析
In this paper, the basic equations for antenna far field measurement theory are presented. From them, some important formulas for measuring radar cross section of target, gain of antenna, antenna factor and other parameters are deduced. 提出了天线远场测量理论中的基本方程组,并由此导出目标的雷达散射截面、天线增益以及天线系数等参数的重要计算公式。
Since the MEMS technology has not been used in antenna field widely, the MEMS frequency reconfigurable PIFA in this paper has considerable referenced value to the application of MEMS antenna. MEMS技术现在还没有大规模应用于天线领域,本文所设计的MEMS频率可重构PIFA天线是MEMS技术在天线领域应用的有益实践,具有一定的借鉴意义。
The positioning error of the antenna near field measurement system can be exactly measured and corrected by using the advanced laser measurement technology. 借助于先进的激光测量技术,可对天线近场测量系统的定位误差进行精确测量并加以校正。
Many phenomena and problems in RFID application have something to do with radiation field, but research on antenna radiation field of RFID system is scarce at present. RFID应用中的很多现象和问题都和辐射场有关,但是目前对于RFID系统天线辐射场的研究还不多。
Nowdays circularly polarized technology is one of important branchs in the microstrip antenna of field, it is used in the communications and electric antagonizes. 圆极化技术作为微带天线理论和应用的一个重要分支,近年来在通信及电子对抗等领域中得到广泛应用。
The conventional horn antenna aperture field solution method always introduces various approximate or assumptive condition in the analysis, and the accuracy is lowered, so new method should be adopted for improving the calculating accuracy. 传统的分析喇叭天天线口径场的方法中引入了各种近似和假设条件,影响分析的准确性,因此必要发展新的分析方法。
Coming from the composition and function of antenna system, the paper expounded in detail common faults of antenna of field vehicle-attached radio and associated checkup methods and introduced the method for removing relative faults on the basis of practice. 本文详细阐述了野外车载电台天线的常见故障及其检测方法,并基于实践经验介绍了排除相关故障的方法。
This paper presents at first the structure of a computer-aided antenna near field measurement analysis system. The methods of design and completion of the hardware and software of the pertinent control system are described in it. 本文主要论述了一种计算机辅助的天线近场测量分析仪系统的结构、控制系统的硬软件结构设计及实现方法,并给出了有关的测量数据。
Antenna Near Field and Application of Finite Difference Time Domain Method 天线近场计算及时域有限差分法的应用
Convolution Method of Antenna Near Field Calculation 天线近场计算的卷积积分法
Software for Antenna Near Field Measurement 天线近远场测量系统及软件设计
The computed results show that the antenna radiation field is interfered severely by the rotating blades. 计算结果表明,旋转桨叶对直升机机载天线辐射场产生了显著的影响。
Performance of compact range in low frequency is simulated by FIT and applicable ranges of convolution method of antenna near field calculation are proved by the results. 本文通过有限积分方法(FIT)对紧缩场的低频特性进行计算,并通过这种精确离散化仿真计算结果与近似算法的比较,证明在一定情况下近似方法有它的适用范围。
Design of Long-range Control Equipment for Antenna Far Field Test 天线远场测试用远程控制器的设计
This paper presents a new design concept for the antenna measurement field, and has designed and tested it in VHF. 本文提出一种新的天线测试场设计方案,并在VHF频段进行了设计与实验。
Horn Antenna Aperture Field Based on Hamilton Architecture and Symplectic Algorithm 基于哈密顿体系辛算法喇叭天线口径场的研究
The theory of electromagnetic field and RFID technology are combined in this paper and some exploring work for research on RFID antenna radiation field and RFID application is done. 本文正是把电磁场理论和RFID技术结合,为RFID系统天线辐射场的研究和应用做了一些探索性的工作。
Finally, we give some measurement results which show that this system is a automatic antenna near field measurement analysis system with high accuracy and various functions. 结果表明,该分析仪系统是一部多功能、高精度的天线自动化测量分析系统。
The stability analysis of the scanning frame of the radar antenna near field testing system 雷达天线近场测试系统中取样架的稳定性分析
Analysis and Research on Antenna Radiation Field of RFID System RFID系统天线辐射场的分析与研究
Moreover, to avoid the interference resulting from frequency overlap between the UWB system and other systems, the UWB antenna with band-notched characteristics become research hotspots in antenna field. 由于超宽带系统频带与其他系统频带重叠而相互干扰,设计具有带阻特性的超宽带天线成为目前研究的热点。
The research on reconfigurable antenna technology is one of the hot spot in antenna field nowadays. 可重构天线技术是目前天线领域的研究热点。
Compact Antenna Test Range ( CATR) has an important influence in antenna test field, which support an effective method to meet the restrictions in distance and environment in the testing field of high frequency antenna. 紧缩场天线测量系统(CompactAntennatestrange)是天线测量领域的重要研究方向,是高频率天线远场测量遇到空间及环境困难的一种解决方法。
So far, the new theories and new technologies related to the problems of antennas 'miniaturization and bandwidth are still the hot spot in antenna field of study. 一直以来,有关天线小型化与宽带化的新理论与新技术都是天线领域的研究热点。
In recent years, wireless communication system need a wide-band and high speed. Based on this requirement, the concept of reconfigurable antenna was posed and it has been the focus in the antenna field. 基于近年来无线通信系统向着宽频带,多频段,高速度发展的趋势,可重构天线的概念被提了出来的,目前已经成为天线领域的研究热点。
With the rapid development of ultra-wideband wireless communication technology and software wireless radio ( SWR), wide band, multi frequency and ultra wide band has become research hotspots in antenna field. 随着超宽带通信技术和软件无线电技术的研究不断深入,宽频、多频及超宽带天线的研究成为近几年来天线领域的热点。
Firstly, we take a horn antenna as an example and obtain the one-dimensional high range resolution profile ( HRRP) of the antenna scattering field by IFFT. 首先以喇叭天线为例,对其结构项散射场进行IFFT变换得到一维距离像。