发明名称 |
Enhanced tunability for low-dielectric-constant ferroelectric materials |
摘要 |
Spatial thinning in no more than two dimensions is used in order to lower both the effective dielectric constant and the dielectric loss tangent of ferroelectric ceramics, while retaining a substantial fraction of their tunability. By not thinning in the third direction, along which the dc bias field is applied, the ferroelectric material maintains the connectivity between elements of the ferroelectric structure that is essential to retaining the tunability. Examples of one-dimensional structures (30) include small diameter columns (28, 32) of dielectric material embedded in a dielectric matrix (26, 34). Examples of two-dimensional structures (21) include square (22) and hexagonal (24) cells comprised of ferroelectric material filled with inert dielectric material or vice versa.
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申请公布号 |
US5607631(A) |
申请公布日期 |
1997.03.04 |
申请号 |
US19930045333 |
申请日期 |
1993.04.01 |
申请人 |
HUGHES ELECTRONICS |
发明人 |
WOLFSON, RONALD I.;ALI, MIR A.;MILROY, WILLIAM W. |
分类号 |
H01B3/00;H01P1/18;H01Q3/44;H03H7/18;(IPC1-7):C04B35/26;C04B37/00 |
主分类号 |
H01B3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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