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此频率计是用单片机89C51和几块数字电路几个三极管,和一个微波集成电路构成。可测量频率最高为2G!分辨力为1HZ!电路中R16---R27电阻阻值为1K。这文件包里有两符制作成功后的图片! 二个SCH。一个PCB文件。一个PDF文件。和一个程序HEX文件。制作的时候只要按线路板接好元件,然后把程序HEX文件烧写到单片机内,就可以调试了,希望大家成功。其中高稳定振荡电路SCH文件是我新加上的。如果大家有条件用上这电路也不错。那样频率计将更稳定。频率计的PCB是我设计的。 设计得不太好,希望大家
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微波转移矩阵分析程序,包含分析频率、输入驻波比、插入衰减和相移的计算-microwave transfer matrix analysis procedures, including analysis of frequency, input VSWR, insert the attenuation and phase shift of calculation
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这款无线报警主机对任何发射频率为315M,编码采用PT2262的无线探头都可适用,如无线人体探测器,无线门磁传感器、无线微波探测器等,由于实际使用的环境不同,所需主机与之相配套的设置也不同,-Wireless Alarm host fired for any frequency 315M, Realize coding using wireless probe can be applied, such as human detectors wireless, wireless Magnetome
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Electronic and quantum devices of the MICROWAVE (the High signal of frequency)
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这为一个通过频域重构方法获得SAR信号点目标的MATLAB仿真软件,是微波成像雷达领域的一个极好的软件-This is a reconstruction obtained by frequency domain SAR signal point target MATLAB simulation software, is the field of microwave imaging radar, an excellent software
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微波领域适用,输入波导的尺寸,输出在此波导中能够传播的波德模式以及传播特性,注意,一般频率在8000MHz以上.-The application of microwave fields, enter the waveguide size, the output in this waveguide can spread Borderdale patterns and propagation characteristics, note that the general frequency above
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1.本程序拟已知驻波比系数ρ,波节点的距离l_m_i_n,和频率f的情况下,求解归一化阻抗Z~,
所以在本程序运行时,要首先输入正确的驻波比系数ρ,波节点的距离l_m_i_n,和频率f;
2.本程序由于视野有限,课本后面的那个圆图并未全部显示出来,只是显示了本程序有用的部分
3.编制本程序的小组成员为微波技术实验分组,倪庆等;
4.由于时间原因,未能打成exe可执行文件包;
5.由于圆图信息量大,所以运行后要把窗口最大化才能正常显示;
6.红色的圆点即为阻抗
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此频率计是用单片机89C51和几块数字电路几个三极管,和一个微波集成电路构成。可测量频率最高为2G!分辨力为1HZ!-This frequency meter is used 89C51 microcontroller and a few pieces of several transistor digital circuit, and a microwave integrated circuit form. Measure the frequency of up to 2G! Resoluti
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Microstrip junctions are most widely used building elements of
microwave integrated circuits. Serve to connect microstrip devices, divide, or combine
power, those elements represent simple microstrip discontinuities characterized by
appropriat
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。PXI吸收了VXI的优点,同时受益于Compact PCI(CPCI),因而速度更快、结构坚固紧凑、系统可靠稳定,在射频和微波频带以下的低、中高频段可以替代VXI而且价格优势明显,深受广大用户欢迎,目前正朝气蓬勃地向商用与军用领域拓展。-. VXI PXI absorbed the advantages of both benefit from the Compact PCI (CPCI), and thus faster, compact, rugged, reliable and stab
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随着信息容量的增加和频率资源的稀缺,为提高单位频带利用率,在微波通信系统中越来越多地采用多电平多相位的复杂信号调制方式,尤其是正交幅度调制(QAM)得到了大量的应用,从早期的4QAM到今天的16QAM。高阶QAM调制大容量数字微波通信系统为了保证服务质量,降低误码率,-long with the increase of information capacity and frequency resource scarcity, for improving the utilization ratio
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Microstrip is a type of electrical transmission line which can be fabricated using printed circuit board technology, and is used to convey microwave-frequency signals. It consists of a conducting strip separated from a ground plane by a dielectric la
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描述了一个完全的第一个示范 集成Doherty功率放大器(PA)的单片微波 后失真线性集成电路(MMIC) 毫米波(毫米波)频段。 Doherty放大器 单片,使用0.15米的GaAs HEMT的过程中,实现了小 7 dB的信号增益从38至46千兆赫,具有结构紧凑的芯片尺寸 2毫米 2 。 Doherty放大器的饱和输出功率 21.8 dBm的。 Doherty放大器之间的相似拓扑 和后失真线性化,使人们有可能改善 同时在毫米波功率放大器设计的效率和线性度。 门的主要和峰值放大器偏置优化后, 漏
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Radio-over-Fibre Technology for Broadband Wireless Communication Systems -The research in this thesis focussed on the feasibility of using both single-mode and
multimode fibres to distribute high-frequency microwave signals to simplified remote
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89C51单片机通过微波模块GH719检测启动,用于检测移动物体,物体移动时产生频率可变方波信号,物体不动时产生连续低电来信号。有物体移动时,逐级输出PWM信号,调整LED亮度-89C51 microcontroller is initiated by the microwave detector for detecting a moving object, a variable frequency square wave signal is generated when the object
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车辆监测用测速雷达是依据多普勒效应原理实现的。由雷达发出一束微波,遇被测目标(车辆)时微波被反射回来,再由雷达接收反射波。如果目标相对于雷达有距离上的运动,反射波的频率将与发射频率发生差异,而这种差异的大小正比于目标与雷达的相对运动速度。于是,雷达通过检测反射波频率和发射波频率的差,就可以计算出被测车辆的移动速度。本次课程设计是利用离散付里叶变换进行频谱分析,设计数字滤波器组,并对滤波器组加窗降低副瓣,通过频域方法测量速度。-Vehicle monitoring using radar gu
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HATA Model MATLAB Simulation In wireless communication, the Hata Model for Urban Areas, also known as the Okumura-Hata model for being a developed version of the Okumura Model, is the most widely used radio frequency propagation model for predicting
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微波方面,用于某一段或某一频率,相噪低,信号稳定,电路简单,具有非常好的运用。-Microwave, for a period or a certain frequency, low phase noise, signal is stable, simple circuit, has the very good.
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用于AWR的微波设计简单的开发模板,能够直接适用大多数开发,如四分之一波长阻抗变换器,分频选择器等-The simple development template for microwave design of AWR can be directly applied to most development, such as 1/4 wavelength impedance converter, frequency dividing selector, etc.
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the operating principles and design of the RF/microwave
subsystems,the amplifers, flters, mixers, local oscillators and
connecting transmission lines.
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