A Novel Analogy-Helix Antenna Structure Based on Negative Refraction Circuit Mode 一种新型基于负折射电路的类螺旋天线结构
A Novel Broadband Circularly Polarization Microstrip Antenna Based on Negative Refraction Circuit 一种基于负折射电路的宽带圆极化微带天线
The Construction of 9 Meters Backup Antenna and Electric Circuit Conjunction Design of Hubei Satellite Earth Station 湖北卫星地球站9m备份天线的建设与电路连接设计
The available commercial software can't simulate the antenna and active circuit in the same simulator environment. 目前的商用软件不能将天线和有源电路放在同一环境下进行分析。
The surrounding circuits design mainly includes the clock circuit, mute circuit and antenna switching circuit. 其中外围电路涉及到时钟电路、静音电路和天线切换电路的设计。
In the adaptive array antenna system, the ordinary multi-channel receiver circuit is very complicated, and it is difficult to assure the consistency of all channels and the reliability in application. 在自适应阵列天线系统中,通常的多通道接收机电路复杂,难以保证各通道性能的一致性,以及使用的可靠性。
The function of Angle Calibration System is calibrating the antenna array, circuit attenuation and the angle of RF target. 而角度校准系统主要用于校准射频系统的天线阵列、通路损耗及射频目标运动的方位角和俯仰角。
The electromotor is the hard core of the antenna tilting mechanism circuit of the equipment. According to the basic failure rate model and working failure rate model of the national military standards, the electromotor working reliabilities are analyzed under different working conditions and environments. 某装备天线翻倒机构电路的核心部件是电动机,根据国军标中电动机的基本故障率和工作故障率模型,分析了在不同条件和工作环境下电动机的工作可靠性,并对结果做了比较和分析。
The input impedance model is used to substitute the microstrip antenna in harmonic simulation of nonlinear circuit, from which can get the spectrum of AIA and the voltage across the impedance model. 在电路中用输入阻抗模型代替微带天线进行非线性电路的谐波平衡分析,从而得到有源集成天线的频谱特性和阻抗模型的端口电压;
A novel polarization agile amplifier type active microstrip array is proposed, in which the polarization agility and amplification of signal for the whole microstrip antenna array can be realized by electrically controlling one active circuit only. 本文提出了一种新颖的极化捷变放大器型有源微带天线阵,只要在馈电端电控单一有源电路就能实现整个微带天线面阵极化的捷变和信号的放大。
This paper has made a theoretical analysis of active receiving antenna formed by combining negative impedance converting circuit with small cone helical antenna, and pointed out the stable working conditions for such an active antenna. 本文对用负阻抗变换电路同小圆锥螺旋天线相结合,构成的有源接收天线进行了理论分析,并给出了该有源天线稳定工作的条件。
The active properties of the unit are reflected using the transmitting relationship of the checked antenna with printed circuit dipole. 其特点是可利用检测天线与单元天线之间的传输关系,准确反映单元天线的动态特性。
Establishment of small stacked microstrip antenna's equivalent circuit model 积叠式小型微带天线等效电路模型的建立
Now the method can be applied to antenna design, microwave circuit simulation electromagnetic scattering, and so on. 目前,该方法在天线、微波器件、散射、电子封装等方面有着卓有成效的应用。
Numerical analysis methods for electromagnetic radiation and scattering by objects in planar multilayered media have urgent need in many applications such as radar targets and model, geophysics exploration, remote sensing, microstrip antenna and circuit simulation and signal integrality analysis and so on. 平面分层介质中目标的电磁辐射与散射数值分析在雷达目标建模、地球物理探测、遥测遥感、微带天线或电路仿真和信号完整性分析等诸多领域具有广泛的工程应用需求。
A basic pattern reconfigurable antenna and control circuit are designed with monopole antenna structure. Then two structures derived from this antenna are designed. 首先以类似微带单极子天线的结构设计了基本的方向图可重构天线及其控制电路,并在此基础上设计了两种衍生结构。
The design of radio frequency module involves oscillator circuit design, parallel interface circuit design and RF antenna interface circuit design. 射频模块电路部分又详细的论述了振荡器电路设计,数字接口连接电路设计和天线射频接口电路设计。
In the dissertation, the theory of antenna, matching circuit and the performance index of antenna are introduced. 文中介绍了天线及其匹配电路的基本理论以及天线的主要性能指标,并根据无钥匙进入系统的特点提出了天线设计的要求。
The basic requirement of mobile communications on cell phone antenna; Cell phone antenna classification and performance comparison; Cell phone antenna operating principal, cell phone antenna meaning, antenna circuit introduction. 移动通信对手机天线的基本要求,手机天线的分类和性能比较。手机天线的工作原理,手机天线的意义,天线电路的简介。
The hardware part contains the antenna design, signal processing circuit, monolithic computer system, power circuit and serial communication circuit. 其中,硬件设计包括天线的设计、信号处理电路、单片机系统、电源电路、串口通信电路五方面。
In phased array radar, the beam steering system needs to quickly complete the calculation and control, condition monitoring and other functions for all antenna units, the traditional ways of hardware circuit design have already been difficult to meet the demands of the radar. 在相控阵雷达中,波束控制系统需快速完成所有天线单元的相位计算和控制、状态监测等功能,传统的硬件电路设计方式已难以满足雷达的需求。
It consists of a receiving tag antenna, multi-resonating circuit and a transmitting tag antenna. 它包括一个接收天线,多阻带滤波器和一个发送天线。
This antenna has a simple structure, small size and low profile to make. Meanwhile, the ground of the antenna can be used as the PCB circuit ground. 该天线结构简单,制作成本低廉,体积小,且天线的地板可以同时作为PCB电路的地板。
A series circuit is equivalent to the designed series antenna array, and radiation impedance of each antenna is expressed as an impedance element in the circuit. 该天线阵列采用串联馈电,可以等效为串联电路形式,电路中的各个阻抗元件即为各个天线单元的辐射阻抗。
The core of multi-beam antenna is beam forming network. As one of the two multi-beam antenna feed network circuit, Butler matrix is lossless gain in the ideal case. 多波束天线的核心在于波束形成网络,而作为多波束天线两大电路馈电网络之一的Butler矩阵,在理想情况下是无损增益。
The hardware part of the instrument mainly makes up by the antenna, high-frequency amplifier, filter circuit, the detector circuit, A/ D conversion, the core chips. 该仪器的硬件部分主要由天线、高频放大器、滤波电路、检波电路、A/D转换、核心芯片组成。
In order to improve product qualification rates and saving cost, the antenna was installed in the circuit board directly instead of the enameled wire. 为了提高产品合格率和节约成本,放弃了使用漆包线作为天线的方案,而是将天线直接布在电路板上。
Then introduced the theoretical basis of the antenna design and performance parameters: including the circuit parameters and radiation pattern. 接着介绍了天线设计的理论基础和性能参数:包括电路参数和辐射参数。
Additionally, antenna radiation parameter and circuit parameter are analyzed with the effects to the network quality. 接着分析了天线辐射参数和电路参数对网络质量的影响。
A high efficiency Class C amplifier is used in design. The latter class is a Butterworth low-pass filter which connects the antenna through the matching circuit after filtering and finally launches through the antenna. 功率放大器采用的是高效率的C类功率放大器,后级是一个巴特沃斯型低通滤波器,滤波后通过匹配电路和天线连接,最后经过天线发射调制信号。