High frequency dielectric composition

Details High frequency dielectric composition High frequency dielectric composition

1990-11-14

1991-05-28

Dixon, Jr., William R.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

501134, 501136, 264332, C04B 3546

Patent

active

050193066

ABSTRACT:
A high-frequency dielectric ceramic compound having a perovskite-type crystal structure comprising a chemical composition substantially represented by the formula (Sr.sub.x Ca.sub.y Mn.sub.z)TiO.sub.3 in which 0.98<x+y+z<1.02, 0.34<y<0.4, and 0.0075<z<0.0015, and possessing a non-linear temperature coefficient is set forth. A method is presented for utilizing the compound to formulate a high-frequency dielectric material, the formulated material being particularly suitable for providing filters and related applications with a relatively low resonant frequency temperature coefficient.

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