专利检索 ap:("David J. White" OR "Carl N. Helmick, Jr." OR "Robert E. Hunt") AND inv:"Carl N. Helmick, Jr." 第 1 页

1.

发明授权
Method and materials for tuning the center frequency of narrow-band surface-acoustic-wave (SAW) devices by means of dielectric overlays 失效
标题翻译：用于通过介电覆盖来调谐窄带表面声波（SAW）器件的中心频率的方法和材料

公开(公告)号：US4243960A

公开(公告)日：1981-01-06

申请号：US933395

申请日：1978-08-14

申请人： David J. White , Carl N. Helmick, Jr. , Robert E. Hunt

发明人： David J. White , Carl N. Helmick, Jr. , Robert E. Hunt

IPC分类号： H03H3/10 , H03H9/64 , H01L41/22 , H03H9/25 , H03H9/42

CPC分类号： H03H3/10 , Y10T29/42

摘要： A method and device for adjusting the center frequency after fabrication of surface acoustic wave (SAW) devices by the deposition of a nonconducting coating which alters the SAW propagation velocity of the device.

摘要翻译： 一种用于通过沉积不改变涂层的表面声波（SAW）器件制造之后的中心频率来调节器件的SAW传播速度的方法和装置。