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3下载:
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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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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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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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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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modbus协议和SPI接口实现微波模块的频率和幅度控制功能-Use modbus protocol and SPI interface to implement the frequency and amplitude control of the microwave module
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ADF4355是微波宽带(54-6800MHz)可实现小数N分频或整数N分频锁相环(PLL)的频率合成器,高分辨率38位模数,低相位噪声电压控制振荡器(VCO),可编程1/2/4/8/16/32/64分频输出,模拟和数字电源为3.3 V,主要用在无线基础设施(W-CDMA,TD-SCDMA,WiMAX,GSM, PCS,DCS,DECT),点到点/点到多点微波链路(ADF4355 microwave broadband (54-6800 MHZ) can realize the decimal
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微波毫米波系统的设计,晶体管选用的是ne3210s01。
设计指标:
1.中心频率7.78G,通带120MHz
2.通带内增益达到16.2dB,波纹小于0.5dB
3.通带内的噪声系数小于0.5
4.通带内输入驻波比小于1.5,输出驻波比小于2
5.系统特性阻抗50Ω
6.微带线基板厚度0.508mm,相对介电常数3.66(The design of microwave and millimeter wave system is based on ne3210s01.
Des
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