Patent · US Active

Adjustable capacitor and circuit provided therewith

US8009407B2 · kind B2 · utility

6Cited by

5References

22Claims

0Family size

Assignee

EPCOS AG · DE

Inventors

Anton Leidl · Munich, DE
Wolfgang Sauer · Glückstadt, DE
Stefan Seitz · Windach, DE

Key dates

Filing date	Sep 12, 2006
Grant date	Aug 30, 2011
Priority date	—
Expiry date	Sep 11, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH01G7/06
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A capacitor includes a multi layer structure on a ceramic or crystalline substrate. The multilayer structure includes a lower electrode, an upper electrode, and a dielectric that is tunable by a voltage applied to the electrodes. The multilayer structure is configured such that resonant oscillation modes of bulk acoustic waves can be propagated in the multilayer structure and such that the resonant frequencies of the oscillation modes are outside a first band range of between 810 and 1000 MHz, second band range of between 1700 and 2205 MHz and third band range of between 2400 and 2483.5 MHz.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.