查询词典 RF

Design of beam delivery system for RF CO_2 laser ceramic substrate scriber;2. The characteristic of RF CO 2 laser and its ceramic substrate scribing are pre sented.

介绍了RFCO2激光器及其陶瓷基板划片的特点；分析了RFCO2激光陶瓷基板划片的机理，给出了整机总体设计方案。

Some of the proposed new radio architectures [3] move the need for a tunable frequency synthesizer from RF to IF, but today's superheterodyne architecture always needs a tunable RF synthesizer.

一些新提出的无线电系统架构[3]将使用可调谐的频率合成器的地方由射频变为中频，但目前的超外差式的结构仍然一直使用可调谐的射频合成器。

In this thesis, we introduce RF transceiver architectures for the wireless communication system and some parameters of the down-conversion mixer. By means of the noise model of RF-CMOS mixers presented by ABIDI in 2000, circuit designers will know how the noise appears at the output of a CMOS down-conversion mixer.

本篇论文介绍了无线通讯系统中常用的射频接收机系统架构及混频器的参数介绍外，并藉由ABIDI於2000年所提出CMOS混频器之杂讯模型，透过此模型将使电路设计者更清楚的了解到杂讯源将经由何种过程出现在混频器的输出端。

An RF ion source suitable for low power operation over a range of pressures in air which comprises discharge electrode, a cathode and an anode, the cathode being connected to an rf signal supply through an associated coupling means and the anode adapted to provide a surface area over which a plasma discharge may occur no greater than substantially that of the cathodal area over which the discharge may occur.

在空气压力范围内适合低功率工作的射频离子源，该离子源包含放电电极，一个阴极和一个阳极，该阴极通过相关的连接装置连接到射频信号源，调节该阳极以提供等离子放电可能发生的表面区域，该区域不大于放电可能发生的阴极区域。

Comparing to single rf source CCP, ion flux and electron flux will be influenced by both of the sources in the dually rf driven CCP. Therefore, particles in plasma behave more complicated.

与单频电容耦合放电相比，在双频电容耦合放电等离子体中的离子和电子受到的是两个不同频率的射频偏压的调制，从而使等离子体表现出更为复杂的运动行为。

The excitatory RF and inhibitory RF of them all are elliptical, with an average area of 3000〓.

兴奋区和抑制区都呈椭圆形，平均面积都约为3000〓。

Through the dynamic simulation, a new rf operation mode for heterostructure intervalley transferred electron devices is given ,where the width of higher valley zone and the electric field in Gunn zone are modulated by the rf device voltage .

动态模拟给出了器件的新射频工作模式：上能谷电子区的宽度调制和低场耿氏区电场的上下浮动。

It can be in the form of spurious signals If the amplitude of these spurious signals is outside agency-reference-recommendation value, they could cause undue disturbances to other users by entering the receiver systems of other RF bands The generation of spurious signals from a transmitter could be the result of imposed varying antenna loads, noisy voltage-supply lines to the stages of the transmitter, or noncontinuous battery-voltage supply to RF energy from the host.

传输器的不稳定是指传输器产生的伪真信号，这种不稳定性的伪真信号的形成出现，如果它们的振幅超过代理服务器允许值就会进入其它波段的接收系统，干扰使用者，强制性的天线改装，伴有嗓音的电压，断续的供电都会产生为伪真信号，有些电池装配线可接收并解调这种能量，并生成嗓音，然后由经供电线路进入主传输器。

In chapter four, after analyzing the RF qualification, I design the receive scheme of RF and IF parts, and accomplish the choosing of chip and design of peripheric connection of chip.

第四章在分析CDMA基站仿真系统射频技术指标和要求的基础上，设计了射频、中频发射接收方案，并完成了芯片的选择和芯片外围连接设计。

Compound semiconductor devices are key parts of RF communication applications because they have advantages of high electron mobility, high working frequency, low RF loss, high linearity and low noise. It is so-called "pHEMT" for full name "Pseudomorphic High Electron Mobility Transistor".

中文摘要Ⅲ-Ⅴ族化合物半导体材料所制成之元件，具有高载子迁移率、工作频率高、射频损耗低、高线性度、低杂讯等优势，使得Ⅲ-Ⅴ族化合物半导体元件成为现今射频通讯应用之关键部份。pHEMT为假晶高电子迁移率电晶体之简称。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。