電子(zi)(zi)元(yuan)器(qi)件(jian)可以(yi)分(fen)很多種類(lei)，其中電子(zi)(zi)元(yuan)件(jian)和(he)電子(zi)(zi)器(qi)件(jian)是(shi)兩(liang)種完(wan)全不同的(de)概(gai)念，很多人(ren)容易混淆(xiao)這兩(liang)個(ge)(ge)名詞。電子(zi)(zi)元(yuan)件(jian)按分(fen)類(lei)可以(yi)分(fen)11個(ge)(ge)大(da)類(lei)，電子(zi)(zi)器(qi)件(jian)按分(fen)類(lei)可以(yi)分(fen)12個(ge)(ge)大(da)類(lei)，可歸(gui)納為真空(kong)電子(zi)(zi)器(qi)件(jian)和(he)半導體器(qi)件(jian)兩(liang)大(da)塊。

        電(dian)(dian)子(zi)元件(jian)(jian)是(shi)指(zhi)(zhi)工(gong)(gong)廠在生(sheng)產(chan)加工(gong)(gong)的(de)(de)(de)(de)時候，不改變(bian)分(fen)子(zi)成(cheng)分(fen)的(de)(de)(de)(de)成(cheng)品，像我們(men)經常(chang)看見的(de)(de)(de)(de)電(dian)(dian)阻器(qi)(qi)，電(dian)(dian)容器(qi)(qi)，電(dian)(dian)感器(qi)(qi)，晶(jing)振等(deng)等(deng)元件(jian)(jian)，因為(wei)它(ta)們(men)本身(shen)都不產(chan)生(sheng)電(dian)(dian)子(zi)，它(ta)對電(dian)(dian)壓(ya)，電(dian)(dian)流(liu)無(wu)控制和變(bian)換(huan)作用，所(suo)以又(you)稱無(wu)源器(qi)(qi)件(jian)(jian)；電(dian)(dian)子(zi)器(qi)(qi)件(jian)(jian)則是(shi)指(zhi)(zhi)工(gong)(gong)廠在加工(gong)(gong)生(sheng)成(cheng)時改變(bian)了分(fen)子(zi)結構(gou)的(de)(de)(de)(de)成(cheng)品，像晶(jing)體管(guan)，電(dian)(dian)子(zi)管(guan)，集成(cheng)電(dian)(dian)路，石英振蕩器(qi)(qi)等(deng)。因為(wei)它(ta)本身(shen)能(neng)產(chan)生(sheng)電(dian)(dian)子(zi)，對電(dian)(dian)壓(ya)，電(dian)(dian)流(liu)有控制，變(bian)換(huan)作用。所(suo)有又(you)稱有源器(qi)(qi)件(jian)(jian)。

        晶(jing)振(zhen)(zhen)(zhen)(zhen)是(shi)一種頻(pin)(pin)(pin)率(lv)元(yuan)(yuan)件(jian)(jian)，頻(pin)(pin)(pin)率(lv)元(yuan)(yuan)件(jian)(jian)除了晶(jing)振(zhen)(zhen)(zhen)(zhen)分類以外，還(huan)有陶(tao)瓷濾(lv)(lv)(lv)波(bo)器(qi)(qi)，聲表面(mian)(mian)濾(lv)(lv)(lv)波(bo)器(qi)(qi)，LC組成(cheng)(cheng)的諧(xie)振(zhen)(zhen)(zhen)(zhen)電(dian)路，RC組成(cheng)(cheng)的選頻(pin)(pin)(pin)電(dian)路，超聲波(bo)換能器(qi)(qi)，陶(tao)瓷變壓器(qi)(qi)。高頻(pin)(pin)(pin)頭屬于頻(pin)(pin)(pin)率(lv)器(qi)(qi)件(jian)(jian)，并非頻(pin)(pin)(pin)率(lv)元(yuan)(yuan)件(jian)(jian)。晶(jing)振(zhen)(zhen)(zhen)(zhen)和(he)聲表面(mian)(mian)濾(lv)(lv)(lv)波(bo)器(qi)(qi)在頻(pin)(pin)(pin)率(lv)元(yuan)(yuan)件(jian)(jian)中銷售最為廣(guang)泛，晶(jing)振(zhen)(zhen)(zhen)(zhen)廣(guang)泛用(yong)(yong)于時鐘，手機(ji)(ji)，藍牙，對講(jiang)機(ji)(ji)，電(dian)腦周(zhou)邊產品，大到(dao)汽車電(dian)子，安(an)防產品等；聲表面(mian)(mian)濾(lv)(lv)(lv)波(bo)器(qi)(qi)廣(guang)泛應用(yong)(yong)在各種無線(xian)通訊系統、電(dian)視機(ji)(ji)、錄放影機(ji)(ji)及全(quan)球衛星定(ding)位(wei)系統接(jie)收器(qi)(qi)上替(ti)代LC諧(xie)振(zhen)(zhen)(zhen)(zhen)電(dian)路，用(yong)(yong)于直(zhi)接(jie)耦合和(he)濾(lv)(lv)(lv)波(bo)。主要功用(yong)(yong)在於把雜(za)訊濾(lv)(lv)(lv)掉，比傳統的LC濾(lv)(lv)(lv)波(bo)器(qi)(qi)安(an)裝更簡單、體積更小。那(nei)么同屬于頻(pin)(pin)(pin)率(lv)元(yuan)(yuan)件(jian)(jian)的晶(jing)振(zhen)(zhen)(zhen)(zhen)和(he)聲表面(mian)(mian)濾(lv)(lv)(lv)波(bo)器(qi)(qi)有哪些區別呢(ni)？

聲表面濾波器的概述：

聲(sheng)(sheng)表面(mian)濾波(bo)(bo)器(qi)通常簡稱(cheng)SAW，是一種(zhong)用石英、鈮酸(suan)鋰或釬(han)鈦酸(suan)鉛等壓(ya)電(dian)(dian)晶體(ti)為(wei)基(ji)片，在其(qi)表面(mian)拋光后在上(shang)面(mian)蒸發一層金屬膜，通過光刻工藝制(zhi)成兩組(zu)具有能(neng)(neng)(neng)量(liang)轉換(huan)功能(neng)(neng)(neng)的(de)(de)(de)(de)交(jiao)叉指(zhi)型的(de)(de)(de)(de)金屬電(dian)(dian)極。分別稱(cheng)為(wei)輸入叉指(zhi)換(huan)能(neng)(neng)(neng)器(qi)和輸出(chu)叉指(zhi)換(huan)能(neng)(neng)(neng)器(qi)。當輸入叉指(zhi)換(huan)能(neng)(neng)(neng)器(qi) 接上(shang)交(jiao)流電(dian)(dian)壓(ya)信(xin)號時，壓(ya)電(dian)(dian)晶體(ti)基(ji)片的(de)(de)(de)(de)表面(mian)就產生(sheng)振動，并激(ji)發出(chu)與外加信(xin)號同頻率(lv)的(de)(de)(de)(de)聲(sheng)(sheng)波(bo)(bo)，此聲(sheng)(sheng)波(bo)(bo)主要(yao)沿著基(ji)片的(de)(de)(de)(de)表面(mian)的(de)(de)(de)(de)與叉指(zhi)電(dian)(dian)極升起的(de)(de)(de)(de)方向傳播，故稱(cheng)為(wei)聲(sheng)(sheng)表面(mian)濾波(bo)(bo)，其(qi)中一個方向的(de)(de)(de)(de)聲(sheng)(sheng)波(bo)(bo)被(bei)除數吸(xi)聲(sheng)(sheng)材料吸(xi)收(shou)，別一方向的(de)(de)(de)(de)聲(sheng)(sheng)波(bo)(bo)則(ze)傳送到輸出(chu)叉指(zhi)換(huan)能(neng)(neng)(neng)器(qi)，被(bei)轉換(huan)為(wei)電(dian)(dian)信(xin)號輸出(chu)。

聲表面濾波器 聲表面波濾波器具有高頻率、通頻帶寬、