電(dian)(dian)子(zi)元器(qi)件(jian)可以(yi)分(fen)很多種類(lei)，其(qi)中(zhong)電(dian)(dian)子(zi)元件(jian)和電(dian)(dian)子(zi)器(qi)件(jian)是兩種完全不同的概(gai)念，很多人容易混(hun)淆這兩個(ge)名詞。電(dian)(dian)子(zi)元件(jian)按分(fen)類(lei)可以(yi)分(fen)11個(ge)大類(lei)，電(dian)(dian)子(zi)器(qi)件(jian)按分(fen)類(lei)可以(yi)分(fen)12個(ge)大類(lei)，可歸(gui)納為真空電(dian)(dian)子(zi)器(qi)件(jian)和半導體器(qi)件(jian)兩大塊。

        電(dian)子(zi)元(yuan)件(jian)是指工(gong)(gong)(gong)廠在(zai)生(sheng)產加(jia)工(gong)(gong)(gong)的時候(hou)，不(bu)改(gai)變(bian)分子(zi)成(cheng)分的成(cheng)品(pin)，像我(wo)們(men)經常看(kan)見(jian)的電(dian)阻器(qi)(qi)，電(dian)容器(qi)(qi)，電(dian)感(gan)器(qi)(qi)，晶(jing)振等等元(yuan)件(jian)，因為它(ta)(ta)們(men)本(ben)身(shen)都不(bu)產生(sheng)電(dian)子(zi)，它(ta)(ta)對(dui)電(dian)壓，電(dian)流無(wu)(wu)控制(zhi)和變(bian)換(huan)作用，所(suo)以又稱無(wu)(wu)源器(qi)(qi)件(jian)；電(dian)子(zi)器(qi)(qi)件(jian)則是指工(gong)(gong)(gong)廠在(zai)加(jia)工(gong)(gong)(gong)生(sheng)成(cheng)時改(gai)變(bian)了分子(zi)結構的成(cheng)品(pin)，像晶(jing)體管，電(dian)子(zi)管，集成(cheng)電(dian)路，石(shi)英振蕩器(qi)(qi)等。因為它(ta)(ta)本(ben)身(shen)能(neng)產生(sheng)電(dian)子(zi)，對(dui)電(dian)壓，電(dian)流有控制(zhi)，變(bian)換(huan)作用。所(suo)有又稱有源器(qi)(qi)件(jian)。

        晶(jing)(jing)振(zhen)是一種(zhong)頻(pin)(pin)率元件(jian)，頻(pin)(pin)率元件(jian)除了(le)晶(jing)(jing)振(zhen)分類以外，還(huan)有(you)(you)陶瓷(ci)濾(lv)(lv)波(bo)(bo)器，聲(sheng)(sheng)表(biao)面濾(lv)(lv)波(bo)(bo)器，LC組(zu)成(cheng)的諧振(zhen)電(dian)(dian)(dian)路(lu)，RC組(zu)成(cheng)的選頻(pin)(pin)電(dian)(dian)(dian)路(lu)，超聲(sheng)(sheng)波(bo)(bo)換能(neng)器，陶瓷(ci)變壓器。高頻(pin)(pin)頭屬(shu)于(yu)頻(pin)(pin)率器件(jian)，并(bing)非(fei)頻(pin)(pin)率元件(jian)。晶(jing)(jing)振(zhen)和聲(sheng)(sheng)表(biao)面濾(lv)(lv)波(bo)(bo)器在(zai)頻(pin)(pin)率元件(jian)中銷售(shou)最為廣泛(fan)(fan)，晶(jing)(jing)振(zhen)廣泛(fan)(fan)用(yong)(yong)于(yu)時鐘，手機(ji)，藍牙(ya)，對講機(ji)，電(dian)(dian)(dian)腦周邊產(chan)品(pin)，大到汽車電(dian)(dian)(dian)子，安防產(chan)品(pin)等(deng)；聲(sheng)(sheng)表(biao)面濾(lv)(lv)波(bo)(bo)器廣泛(fan)(fan)應用(yong)(yong)在(zai)各種(zhong)無線通訊系統、電(dian)(dian)(dian)視機(ji)、錄(lu)放影(ying)機(ji)及全球衛星定位系統接(jie)收(shou)器上替代(dai)LC諧振(zhen)電(dian)(dian)(dian)路(lu)，用(yong)(yong)于(yu)直接(jie)耦合(he)和濾(lv)(lv)波(bo)(bo)。主要功用(yong)(yong)在(zai)於(wu)把雜訊濾(lv)(lv)掉，比(bi)傳統的LC濾(lv)(lv)波(bo)(bo)器安裝更(geng)簡單(dan)、體積更(geng)小。那么同屬(shu)于(yu)頻(pin)(pin)率元件(jian)的晶(jing)(jing)振(zhen)和聲(sheng)(sheng)表(biao)面濾(lv)(lv)波(bo)(bo)器有(you)(you)哪些(xie)區別呢？

聲表面濾波器的概述：

聲(sheng)(sheng)(sheng)表(biao)(biao)面(mian)(mian)濾波器(qi)(qi)通(tong)常簡稱(cheng)SAW，是一種用(yong)石英、鈮酸鋰或釬鈦酸鉛等壓(ya)電晶體為基(ji)片，在其表(biao)(biao)面(mian)(mian)拋光后在上面(mian)(mian)蒸發(fa)一層金屬(shu)膜，通(tong)過(guo)光刻工藝制(zhi)成兩(liang)組具有(you)能量(liang)轉換(huan)(huan)功能的交(jiao)叉(cha)指型的金屬(shu)電極。分(fen)別稱(cheng)為輸(shu)入(ru)叉(cha)指換(huan)(huan)能器(qi)(qi)和輸(shu)出叉(cha)指換(huan)(huan)能器(qi)(qi)。當(dang)輸(shu)入(ru)叉(cha)指換(huan)(huan)能器(qi)(qi) 接上交(jiao)流電壓(ya)信(xin)號(hao)(hao)時，壓(ya)電晶體基(ji)片的表(biao)(biao)面(mian)(mian)就產生振動，并激發(fa)出與外(wai)加信(xin)號(hao)(hao)同(tong)頻率(lv)的聲(sheng)(sheng)(sheng)波，此聲(sheng)(sheng)(sheng)波主要沿著基(ji)片的表(biao)(biao)面(mian)(mian)的與叉(cha)指電極升起的方(fang)向(xiang)傳播，故稱(cheng)為聲(sheng)(sheng)(sheng)表(biao)(biao)面(mian)(mian)濾波，其中一個方(fang)向(xiang)的聲(sheng)(sheng)(sheng)波被除數(shu)吸聲(sheng)(sheng)(sheng)材料吸收，別一方(fang)向(xiang)的聲(sheng)(sheng)(sheng)波則傳送(song)到(dao)輸(shu)出叉(cha)指換(huan)(huan)能器(qi)(qi)，被轉換(huan)(huan)為電信(xin)號(hao)(hao)輸(shu)出。

聲表面濾波器 聲表面波濾波器具有高頻率、通頻帶寬、