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class="searchLt"><div id="fjbyve2" class="tabs"><a href="JavaScript:;" data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會(huì)</a></div><div id="ighyftf" class="clearfix searchWrap"><div id="87oi8eo" class="searchInput"><input type="text" name="keywords" placeholder="請(qǐng)輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="utvixof" class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁(yè)</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會(huì)信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="j3j7jls" class="twoCol"><div id="fb2zrdp" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_txcp/">通信產(chǎn)品</a>?<a href="http://www.cdcfah.com/cp/second-txcp_tianxianyk/">天線</a>?<a href="http://www.cdcfah.com/cp/third-tianxianyk_txtxhv/">通信天線</a>?河源5G天線歡迎來電泉州市天陸通信科技供應(yīng)</p><div id="bqmtpmo" class="leftbox clearfix"><h1>河源5G天線歡迎來電泉州市天陸通信科技供應(yīng)</h1><div id="wvx3wyz" class="proBig"><div id="8ncuqm3" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/27/9/637104422045340797_qztl_8940554.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ybtamoa" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/27/9/637104422045340797_qztl_8940554.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="88hr7wd" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>福建省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>河源5G天線,天線</p><p><span>***更新：</span>2020-10-21 13:05:49</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="0miubdk" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">泉州市天陸通信科技有限公司</a></p><p><span>聯(lián)系人：</span>景經(jīng)理</p><p><span>郵箱: </span>3131314848@qq.com</p><p><span>電話: </span>18520272999</p><p><span>傳真: </span>0595_22002867</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0595-22001867</p><p><span>地址: </span>福建省泉州市豐澤區(qū)北峰工業(yè)區(qū)豐盛路20號(hào) </p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="eolne8o" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hbyvhe8" class="box"><p><p style="text-indent:25px">保護(hù)車載天線需要注意哪些？ ?天線處于車頂正中位置時(shí)發(fā)射效果比較好，但是這樣的話天線很高，過隧道或林蔭路的時(shí)候容易被掛到天線。下面請(qǐng)看車載天線需要注意哪些？ ?1：不使用仿造天線（因?yàn)橘|(zhì)量沒有保證），要么用鉆石天線，要么就用協(xié)會(huì)天線。保證天線本身具有1.5以下的駐波比。并且保證阻抗，電抗匹配。 ?2：天線不可以放倒使用，放倒以后駐波會(huì)很大，損傷機(jī)器。 ?3：天線不可放在室內(nèi)使用，同時(shí)也造成高駐波。還有害人體。 ?4：盡量不要總是拆卸天線，日久容易造成接觸不良產(chǎn)生高駐波，影響機(jī)器壽命。 ?5：下雨天注意接頭不能夠進(jìn)水，如果進(jìn)水，河源5G天線，也會(huì)駐波高。平時(shí)也注意接頭的檢查。有沒有松曠的狀況。 ?6：經(jīng)常檢查饋線出車端，有沒有破損，如果有破損建議更換，因?yàn)橐矔?huì)造成電波泄漏，形成駐波，危害人體。如果斷了的就不能發(fā)射了。 ?7：車隊(duì)或者近距離通聯(lián)用小功率發(fā)射，也會(huì)增加車臺(tái)使用壽命。也對(duì)自己的健康有益。 ?8：如果是車載天線，車上的整流器對(duì)電瓶的輸出電壓要保證在15V以下。平時(shí)可以用電表測(cè)量。需要注意的是：熄火的時(shí)候電壓一般在12.5V左右，待速的電壓應(yīng)該在13.5V左右，河源5G天線，河源5G天線，提高轉(zhuǎn)速3千轉(zhuǎn)，只要不超過14V就說明整流器沒有問題。電臺(tái)也會(huì)得到很好的保護(hù)。盡量不要總是拆卸天線，日久容易造成接觸不良產(chǎn)生高駐波，影響機(jī)器壽命。河源5G天線</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河源5G天線,天線" src="http://tyunfile.71360.com/UpLoadFile/2019/11/27/9/637104422045340797_qztl_8940554.jpg"></div><p> 汽車天線不是裝飾，天線是用來接收信號(hào)，依據(jù)功能不易一樣天線也是有不同，比如說收音機(jī)無線以及GPS天線等！汽車收音機(jī)天線也是大家所時(shí)常看到汽車尾部天線，也是用來去接受以及加強(qiáng)接收信號(hào)，GPS天線一般也是個(gè)小黑塊，粘貼到汽車儀表盤等些部位。有些車子所用的印刷電路天線所隱藏到前風(fēng)擋上面，也是美觀不少！ </p> <p> <br /> </p> <p> 汽車天線除了增強(qiáng)信號(hào)，用以接收無線電廣播外，還有一個(gè)作用就是釋放靜電。無論是汽車座椅，還是車身，都會(huì)積聚一些靜電，而汽車天線就將汽車外部的靜電全部釋放出去，也是為了保證安全。 </p> <p> <br /> </p> <p> 汽車天線還具有擾流的作用，汽車在高速行駛時(shí)，尾部會(huì)形成一個(gè)渦流造成負(fù)壓，增加了汽車的阻力，“鯊魚鰭”可以在渦流形成之前被分割，降低車子的行駛阻力！ </p> <p> <br /> 南平橡膠天線高頻無線通信的主要問題是信號(hào)的衰落，普通全向天線或定向天線都會(huì)因衰落使信號(hào)失真較大。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河源5G天線,天線" src="http://tyunfile.71360.com/UpLoadFile/2019/11/27/9/637104422023928519_qztl_1900394.jpg"></div><p style="text-indent:25px">??車載天線是指設(shè)計(jì)安裝在車輛上的移動(dòng)通訊天線，**常見就是吸盤天線。由于吸盤天線安裝擺放容易，所以在一些簡(jiǎn)易設(shè)臺(tái)場(chǎng)合常常用吸盤天線代替基地臺(tái)天線。車載天線結(jié)構(gòu)上有縮短型、四分之一波長(zhǎng)、中部加感型、八分之五波長(zhǎng)、雙二分之一波長(zhǎng)等形式的天線，理論上它們的效率依次增加，同樣工作頻段的天線的長(zhǎng)度也依次增加。　　 ?? 由于車輛本身有限高，加上過長(zhǎng)的天線在車輛高速行進(jìn)時(shí)形成的風(fēng)阻，過橋洞、進(jìn)入地下車庫(kù)都是問題，所以車載天線并不是越長(zhǎng)越好，一般要求轎車天線不超過70厘米，面包車類要求天線更短。　? ?? 縮短型天線體積小巧，雖然增益不高，但適合使用于需要隱蔽天線的場(chǎng)合。一般的警用車輛建議安裝高增天線，尤其是在活動(dòng)區(qū)域范圍比較大的車輛，350MHz高增益天線多分為八分之五波長(zhǎng)加感的形式，在距天線頂部二分之一波長(zhǎng)距離處有一個(gè)加感線圈。　　 ?? 400MHz頻段雙二分之一波長(zhǎng)天線具有較高的增益，它的外觀特征是天線的振子上有兩個(gè)加感線圈。八分之五波長(zhǎng)天線和中部加感型天線也有較高的增益，且價(jià)格比較便宜，因此得到廣的使用。在作為臨時(shí)固定臺(tái)天線使用的場(chǎng)合可以考慮選用增益高的吸盤天線，天線的長(zhǎng)度不必有過多限制。</p><p> WIFI天線基礎(chǔ)知識(shí)天線的效果與位置無線電發(fā)射機(jī)輸出的射頻信號(hào)功率，經(jīng)過饋線（電纜）輸送到天線，由天線以電磁波方式輻射出去。電磁波抵達(dá)接納地址后，由天線接下來（只是接納很小很小一部分功率），并經(jīng)過饋線送到無線電接納機(jī)?？梢姡炀€是發(fā)射和接納電磁波的一個(gè)重要的無線電設(shè)備，沒有天線也就沒有無線電通訊。天線種類繁多，以供不同頻率、不同用處、不同場(chǎng)合、不同要求等不同情況下運(yùn)用。關(guān)于很多種類的天線，進(jìn)行恰當(dāng)?shù)姆诸愂潜匾模喊从锰幏诸?，可分為通訊天線、電視天線、雷達(dá)天線等；按作業(yè)頻段分類，可分為短波天線、超短波天線、微波天線等；按方向性分類，可分為全向天線、定向天線等；按外形分類，可分為線狀天線、面狀天線等；等等分類。*電磁波的輻射導(dǎo)線上有交變電流活動(dòng)時(shí)，就可以發(fā)作電磁波的輻射，輻射的能力與導(dǎo)線的長(zhǎng)度和形狀有關(guān)。如圖a所示，若兩導(dǎo)線的間隔很近，電場(chǎng)被束縛在兩導(dǎo)線之間，因此輻射很弱小；將兩導(dǎo)線打開，如圖b所示，電場(chǎng)就散播在周圍空間，因此輻射增強(qiáng)。必須指出，當(dāng)導(dǎo)線的長(zhǎng)度L遠(yuǎn)小于波長(zhǎng)λ時(shí)，輻射很弱小；導(dǎo)線的長(zhǎng)度L增大到可與波長(zhǎng)相比較時(shí)，導(dǎo)線上的電流將**添加，因此就能形成較強(qiáng)的輻射。車載天線是攔截發(fā)射臺(tái)發(fā)射的高頻電波并傳輸給車載收音機(jī)、車載電話或無線電導(dǎo)航設(shè)備的接收機(jī)；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河源5G天線,天線" src="http://tyunfile.71360.com/UpLoadFile/2019/11/27/9/637104422094453986_qztl_9965526.jpg"></div><p> GPS系統(tǒng)精度高、可一連導(dǎo)航，有很強(qiáng)的抗干擾本領(lǐng)更重要的是它可以提供七維的時(shí)空位置速度信息，在帆海導(dǎo)航中發(fā)揮著重要作用，據(jù)正大信維小編了解，很難想象哪一條船舶不裝備GPS導(dǎo)航系統(tǒng)和裝備部署，GPS導(dǎo)航在航海領(lǐng)域的應(yīng)用非常重要。GPS航海導(dǎo)航用戶繁多，其分類標(biāo)準(zhǔn)也各不相同，若根據(jù)航路類型分別、GPS航海導(dǎo)航可以分為五大類：遠(yuǎn)洋導(dǎo)航、海岸導(dǎo)航、港口導(dǎo)航、內(nèi)河導(dǎo)航、湖泊導(dǎo)航。不同階段或地區(qū)，對(duì)航行安全要求也因環(huán)境差別而不同，但都是為了保證**小航行交通，有用地利用日益擁擠的航路，保證航行安全，提高交通運(yùn)輸效益，節(jié)省能源。根據(jù)導(dǎo)航系統(tǒng)的功能分別有以下幾類：1、自主導(dǎo)航自主導(dǎo)航系統(tǒng)適于上述五種航路的任何一種，它基本上是一種單純的導(dǎo)航體系，其主要特性是*向用戶提供位置、航速、航向和時(shí)間信息，也可包括海圖航跡顯示，不需通信系統(tǒng)。適用于任何海面、湖面和內(nèi)河上航行的船舶，從大型遠(yuǎn)洋貨輪到私家游艇。2、港口管理和進(jìn)港引導(dǎo)這種系統(tǒng)主要用在港口/碼頭的船舶調(diào)度管理、進(jìn)港船舶引導(dǎo)，以確保港口/碼頭航行的安全和秩序。該系統(tǒng)需要雙向數(shù)據(jù)/語音通訊，以便于領(lǐng)航員引導(dǎo)船舶，港區(qū)情境/海圖顯示，以表明停泊的船舶和可利用的進(jìn)港航線，避免。天線向多元化方向開展。商丘對(duì)講機(jī)天線</p><p style="text-indent:25px">3G天線向美化方向開展。河源5G天線</p><p> 車載天線是指原設(shè)計(jì)安裝在車輛上通訊天線，**常見使用**普遍的是吸盤天線。車載天線結(jié)構(gòu)上也有縮短型、四分之一波長(zhǎng)、中部加感型、八分之五波長(zhǎng)、雙二分之一波長(zhǎng)等方式的天線。基地臺(tái)天線在整個(gè)通訊體系中具有十分要害的效果，尤其是作為通訊紐帶的通訊臺(tái)站。常用的基地臺(tái)天線有玻璃鋼高增益天線、四環(huán)陣天線（八環(huán)陣天線）、定向天線。據(jù)上所述。影響天線效果的有。天然物體，如山、樹、房子等。還有便是天氣，由于云層會(huì)對(duì)天線有反射效果。其次是天線的彼此干擾。**終是其它的電磁干擾，如手機(jī)信號(hào)塔，電視信號(hào)塔，廣播信號(hào)塔。 </p> <p> <br /> 河源5G天線</p><p style="text-indent:25px">泉州市天陸通信科技有限公司位于福建省泉州市豐澤區(qū)北峰工業(yè)區(qū)豐盛路20號(hào) 。泉州市天陸通信致力于為客戶提供良好的玻璃鋼天線，車載天線，船舶天線，對(duì)講機(jī)天線，一切以用戶需求為中心，深受廣大客戶的歡迎。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠(chéng)信為本的理念，打造通信產(chǎn)品良好品牌。泉州市天陸通信秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營(yíng)理念，全力打造公司的重點(diǎn)競(jìng)爭(zhēng)力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1648094.html</p></div></div></div></div></div><div id="hlbcjln" class="page-right twoColRt"><div id="swspw88" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="gfbyaxt" class="recomPic likePro"><a 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