antenna grounding switch

antenna grounding switch的基本解释

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天线接地开关

与antenna grounding switch相关的网络例句 [注：此内容来源于网络，仅供参考]

For the electronics industry with more than 2,000 diverse, including touch-switch switch membrane switch patch | chip switch-button switch sliding switch straight key switch boat-shaped | WHO board switch button | button switch combined switch Bodong | maintenance Tuitui Power switch Switch DIP | for code switch tongue spring | dry reed switch coding side of the switch by switching touch | sensors switch rotation | Band | fluctuations switch switch products.

为电子工业提供超过2000多样化包括轻触开关微动开关薄膜开关贴片|片式开关钮子开关滑动开关直键开关船形|跷板开关按钮|按键开关组合开关拨动|维修开关推推式电源开关 DIP|拨码开关舌簧|干簧管开关编码开关侧按开关触摸|感应开关旋转|波段|波动开关开关产品。

The company provides the precision electronic switch type: leaf switch,rest switch,tact switch,multi-functional switch,swing switch,slide swtich,micro switch,encoder,push key switch,toggle switch,push switch and Matched with various types of switches each series switch keycap,all type jack:2.5/3.5 phone jack,6.35 jack,DC power jack,usb/hdmi jack,AC power jack,S terminal and so on, the company provides the precision electronic connector type: FFC / FPC flat cable connector, BTOB connector, all kinds of memory card connector: Micro SD, SD, MMC, XD, MS, SM, CF card and a single all-in-one deck, etc., switches Products: Tact Switch, multi-function switch, DIP switch, key switch, button switch series, etc.

公司提供各类高品质电子开关：叶片开关、复位开关、轻触开关、多功能开关、摇头开关、拨动开关、微动开关、编码器、按键开关、按钮开关及与各类开关相配套的开关键帽；插座：2.5/3.5耳机、6.35插座、DC电源插座、USB/HDMI插座、AC电源插座、S端子等；精密电子连接器：FFC/FPC扁平电缆连接器、板对板连接器；记忆卡座：MicroSD、SD、MMC、XD、MS、SM、CF单卡及多合一卡座等。

These antennas can cover GSM900/DCS/PCS/UMTS operation. In the chapter 2, the antenna is designed based on the concept of monopole antenna. Furthermore, the antenna structure have two radiant paths and coupled each other at tail end to do impedance matching. In addition, to raise distance between radiation plane and ground will avoid capacitative effect effectually. In the chapter 3, the antenna is designed based on the concept of planar inverted-F antenna. Furthermore, that the antenna structure have two radiant paths and coupled each other at tail end to do impedance matching is similar to chapter 2. But there is a difference in them. We can choose the short position to change input impedance at this structure. In the chapter 4, the antenna is designed based on the concept of planar inverted-F antenna which takes coupled-fed. It will produce the first mode and high-order mode near the frequency, 900MHz. The feature of this type is to reduce the volume effectually. This antenna can not only cover GSM900/DCS/PCS/UMTS operation but maintain good radiation efficiency. Finally, we will compare three antennas, and develop procedure with industrial view, and propose the prospect of the GSM/GPRS antenna in PND, as a conclusion.

在第二章中，我们使用单极天线设计概念，使用双路径架构并於末端耦合来对天线阻抗做匹配，产生涵盖GSM900/DCS/PCS/UMTS四频操作频带，并提高与接地面的辐射高度，以避免电容效应，使天线具有良好的辐射特性；在第三章中，使用倒F形天线设计概念，使用双路径架构於末端耦合，并於辐射臂上采取适当接地点电感效应作输入阻抗匹配，达成涵盖GSM900/DCS/PCS/UMTS系统的四个操作频带；在第四章中，采用倒F形架构并使用耦合馈入方式，使得长辐射金属臂在低频900 MHz附近产生共振，产生低频基频模态及高阶模态，以达成宽频及频宽涵盖GSM900/DCS/PCS/UMTS频带操作，并有效缩减使用体积；最后，分别比较此三种架构的优缺点，再加以业界角度来思考，研发产品天线的流程及思考方向，以及天线应用於可携式导航装置中未来的展望作为本论文的总结。

与antenna grounding switch相关的网络解释 [注：此内容来源于网络，仅供参考]

antenna grounding switch：天线接地开关

antenna field gain 天线场强增益 | antenna grounding switch 天线接地开关 | antenna height above average terrain 平均地表面上天线高度

antenna grounding switch：天线接地

antenna field gain 天线场强增益 | antenna grounding switch 天线接地 | anteunator cable 天线衰减器

antenna grounding switch：天线接地开关KFz中国学习动力网

antenna field gain 天线场强增益KFz中国学习动力网 | antenna grounding switch 天线接地开关KFz中国学习动力网 | antenna height above average terrain 平均地表面上天线高度KFz中国学习动力网