lnb

The more good quality of the LNB , the smaller caliber and the lower cost of receiving antenna were required .

高频头质量越好，相应的接收天线口径要求越小，成本越低。

Main products : Setop box , LED light , Satellite receiver , CATV amplifier , Optical transmitter , LNB , Optical receiver , Optical cable , LED large screen , cable .

主营：机顶盒，LED照明灯，卫星接收机，放大器，光发射机，高频头，光接收机，光缆，LED显示屏，电缆。

LNB Frequency Variation and Emergency Measures Along with Environment

LNB本振随环境的变化及应变措施

LNB Power and Control IC for Satellite STB Reciever

卫星机顶盒接收机用LNB电源及控制IC家族

Satellite TV receiving antenna LNB regarding the certain receiving system in theoretically is a fixture , but in fact its value is drift because of receiving the working conditions change .

卫星电视接收天线LNB的本振频率对于一定的接收系统在理论上是一个固定值，但实际上其值受到工作环境变化的影响会出现漂移；

CONCLUSION : BPB + LNB is a better treatment for frozen shoulder in clinic , and SGB and SNB can be used selectively in particular clinical situation .

结论：BPB+LNB是临床治疗肩周炎较好的方法，SGB，NSB可根据临床症状选择性应用。

Then the LNB is manufactured , and the gain and the noise figure are measured by noise meter . The best scheme is determined with testing and modifying again and again .

通过噪声仪测量LNB噪声和增益，并反复调试和修改，确定最优方案。

In many communication applications , e.g. wireless LAN , Bluetooth , WiMAX and LNB ( low-noise down converter ), etc , balanced circuit has been widely used in the RF front-end .

在许多无线通信应用中，例如无线局域网，蓝牙，WiMAX以及LNB（低噪声下变频器）等，平衡滤波电路被广泛应用于射频前端模块。

According to completely and system analysis to all kinds of Electro-optic crystal , gain the design scheme , carried on the analysis of the in a specific optical characteristic to the crystal of LNB and RTP and design the crystal size to calculate half-wave voltage .

根据对各类调Q晶体的性能全面系统的分析比较，得出设计方案，并对LNB晶体和RTP晶体进行了具体的光学特性的分析，设计出晶体尺寸和计算出晶体的半波电压。

This paper first overall introduced the work principle and technical specification of the LNB , divided into five modules according to its performance , low noise amplifier ( LNA ), image-reject filter , dielectric resonator oscillator ( DRO ), mixer and IF amplifier .

本文首先从整体上介绍了高频头的工作原理及技术指标，对整个高频头按照性能分为五大模块：低噪声放大器、镜像抑制滤波器、介质振荡器、混频器和中频放大器。