隨著無線(xian)(xian)通信系(xi)統(tong)(tong)的(de)(de)(de)(de)迅速發展，天(tian)(tian)線(xian)(xian)在智能手(shou)機、射頻識別系(xi)統(tong)(tong)、雷(lei)達的(de)(de)(de)(de)使用需求越來越大，如何將(jiang)天(tian)(tian)線(xian)(xian)進行小型化(hua)、輕(qing)量化(hua)、低(di)功(gong)耗成為人(ren)們關注的(de)(de)(de)(de)熱點。由于海水、土(tu)壤、巖石等介質中(zhong)環境較(jiao)為復雜，傳統(tong)(tong)天(tian)(tian)線(xian)(xian)產(chan)生的(de)(de)(de)(de)高頻信號在這些環境中(zhong)的(de)(de)(de)(de)趨膚(fu)深度較(jiao)低(di)且波長較(jiao)短(duan)，這使得電(dian)磁(ci)波信號在傳輸過程中(zhong)的(de)(de)(de)(de)衰減與損(sun)耗增加，無法滿足(zu)水下與地下的(de)(de)(de)(de)通信與探測的(de)(de)(de)(de)需求，而超低(di)頻天(tian)(tian)線(xian)(xian)具有工作頻率低(di)、穿(chuan)透性強等特點，其(qi)中(zhong)與傳統(tong)(tong)電(dian)小天(tian)(tian)線(xian)(xian)相比(bi)，磁(ci)電(dian)機械天(tian)(tian)線(xian)(xian)可將(jiang)天(tian)(tian)線(xian)(xian)尺寸縮(suo)小兩(liang)個數量級，被(bei)認(ren)為是目前能夠實(shi)現超低(di)頻天(tian)(tian)線(xian)(xian)小型化(hua)的(de)(de)(de)(de)重要解決方(fang)案。

　　安泰電子ATA-2082高壓放大(da)器，其內部采用線性(xing)放大(da)電路，具有低失真、高穩定的(de)特點(dian)。雙(shuang)通道獨立輸出，可分別(bie)驅動兩個負載(zai)。帶(dai)寬覆蓋DC-200kHz，支(zhi)持任意(yi)波形放大(da)，以滿(man)足(zu)各類實(shi)驗的(de)測試。

　　實驗名稱：基于磁電復(fu)合材(cai)料的(de)低頻天線研究

　　實驗原理：磁(ci)電(dian)(dian)效(xiao)(xiao)(xiao)(xiao)應(ying)(ying)(ying)(ying)分為正(zheng)磁(ci)電(dian)(dian)效(xiao)(xiao)(xiao)(xiao)應(ying)(ying)(ying)(ying)與逆(ni)磁(ci)電(dian)(dian)效(xiao)(xiao)(xiao)(xiao)應(ying)(ying)(ying)(ying)，正(zheng)磁(ci)電(dian)(dian)效(xiao)(xiao)(xiao)(xiao)應(ying)(ying)(ying)(ying)是(shi)指磁(ci)電(dian)(dian)復(fu)合材(cai)料(liao)在(zai)交變磁(ci)場下(xia)(xia)，其磁(ci)致(zhi)伸(shen)(shen)(shen)縮(suo)層(ceng)(ceng)由于磁(ci)致(zhi)伸(shen)(shen)(shen)縮(suo)效(xiao)(xiao)(xiao)(xiao)應(ying)(ying)(ying)(ying)會產(chan)生(sheng)應(ying)(ying)(ying)(ying)變，通(tong)過(guo)界(jie)面耦(ou)合使壓(ya)(ya)電(dian)(dian)層(ceng)(ceng)發生(sheng)形(xing)變，進一步通(tong)過(guo)壓(ya)(ya)電(dian)(dian)效(xiao)(xiao)(xiao)(xiao)應(ying)(ying)(ying)(ying)產(chan)生(sheng)電(dian)(dian)場，即(ji)為磁(ci)能(neng)-機(ji)械能(neng)-電(dian)(dian)能(neng)之(zhi)間轉(zhuan)化；逆(ni)壓(ya)(ya)電(dian)(dian)效(xiao)(xiao)(xiao)(xiao)應(ying)(ying)(ying)(ying)是(shi)指磁(ci)電(dian)(dian)復(fu)合材(cai)料(liao)在(zai)施加(jia)外加(jia)電(dian)(dian)壓(ya)(ya)時，壓(ya)(ya)電(dian)(dian)層(ceng)(ceng)由于逆(ni)壓(ya)(ya)電(dian)(dian)效(xiao)(xiao)(xiao)(xiao)應(ying)(ying)(ying)(ying)產(chan)生(sheng)應(ying)(ying)(ying)(ying)變，通(tong)過(guo)界(jie)面耦(ou)合使磁(ci)致(zhi)伸(shen)(shen)(shen)縮(suo)層(ceng)(ceng)發生(sheng)形(xing)變，在(zai)逆(ni)磁(ci)致(zhi)伸(shen)(shen)(shen)縮(suo)效(xiao)(xiao)(xiao)(xiao)應(ying)(ying)(ying)(ying)的作用下(xia)(xia)產(chan)生(sheng)磁(ci)場，即(ji)完成電(dian)(dian)能(neng)-機(ji)械能(neng)-磁(ci)能(neng)的轉(zhuan)化。

　　實驗框圖：

　　實驗實拍圖：

　　實驗過程：

　　采用(yong)動(dong)態掃頻法進行(xing)測試(shi)(shi)，搭建(jian)好如圖所示的(de)測試(shi)(shi)環境(jing)，首先(xian)將待(dai)測磁(ci)電(dian)(dian)異質結(jie)樣品(pin)(pin)放(fang)(fang)入(ru)自制(zhi)小螺線(xian)(xian)管(guan)(guan)中，使(shi)螺線(xian)(xian)管(guan)(guan)覆(fu)蓋(gai)住樣品(pin)(pin)并使(shi)樣品(pin)(pin)位于螺線(xian)(xian)管(guan)(guan)中央，在(zai)電(dian)(dian)腦上(shang)用(yong)Labview程序控(kong)制(zhi)鎖相放(fang)(fang)大(da)器(qi)(qi)輸出(chu)交變(bian)電(dian)(dian)壓(ya)(ya)，信號經(jing)(jing)過(guo)ATA-2082功率放(fang)(fang)大(da)器(qi)(qi)放(fang)(fang)大(da)加(jia)(jia)在(zai)磁(ci)電(dian)(dian)異質結(jie)的(de)壓(ya)(ya)電(dian)(dian)層上(shang)，并對(dui)此電(dian)(dian)路電(dian)(dian)壓(ya)(ya)用(yong)示波器(qi)(qi)進行(xing)檢測，保(bao)證加(jia)(jia)在(zai)樣品(pin)(pin)上(shang)的(de)電(dian)(dian)壓(ya)(ya)準確穩定，同時(shi)鎖相放(fang)(fang)大(da)器(qi)(qi)對(dui)螺線(xian)(xian)管(guan)(guan)的(de)感應電(dian)(dian)壓(ya)(ya)進行(xing)測試(shi)(shi)，經(jing)(jing)Labview程序自動(dong)計算(suan)后將逆磁(ci)電(dian)(dian)耦合系數顯示在(zai)電(dian)(dian)腦上(shang)。測試(shi)(shi)時(shi)可對(dui)樣品(pin)(pin)施加(jia)(jia)直流(liu)偏置磁(ci)場(chang)，使(shi)用(yong)Labview程序控(kong)制(zhi)電(dian)(dian)源使(shi)另一亥姆霍茲線(xian)(xian)圈(quan)施加(jia)(jia)直流(liu)偏置磁(ci)場(chang)。

　　應用方向：無線通信

　　應用場景：地震監測、水下通信

　　產品推薦：ATA-2082高壓放大器

　　圖：ATA-2082高壓放大器指標參數

　　圖：ATA-2000系列高壓放大器指標參數

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