发明申请
US20110204995A1 ACOUSTICALLY COUPLED RESONATOR FILTER WITH IMPEDANCE TRANSFORMATION RATIO CONTROLLED BY RESONANT FREQUENCY DIFFERENCE BETWEEN TWO COUPLED RESONATORS
有权
具有由两个耦合谐振器之间的谐波频率差异控制的阻抗变换比的主要耦合谐振滤波器
- 专利标题： ACOUSTICALLY COUPLED RESONATOR FILTER WITH IMPEDANCE TRANSFORMATION RATIO CONTROLLED BY RESONANT FREQUENCY DIFFERENCE BETWEEN TWO COUPLED RESONATORS
- 专利标题（中）： 具有由两个耦合谐振器之间的谐波频率差异控制的阻抗变换比的主要耦合谐振滤波器
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申请号： US12710626申请日： 2010-02-23
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公开(公告)号： US20110204995A1公开(公告)日： 2011-08-25
- 发明人: Tiberiu JAMNEALA , Alexandre SHIRAKAWA , Bernhard KOELLE
- 申请人： Tiberiu JAMNEALA , Alexandre SHIRAKAWA , Bernhard KOELLE
- 申请人地址： SG Singapore
- 专利权人： Avago Technologies Wireless IP (Singapore) Pte. Ltd.
- 当前专利权人： Avago Technologies Wireless IP (Singapore) Pte. Ltd.
- 当前专利权人地址： SG Singapore
- 主分类号： H03H9/15
- IPC分类号： H03H9/15 ; H01L41/22
摘要：
A signal processing device includes a first acoustic resonator, a second acoustic resonator disposed on the first acoustic resonator, and a coupling layer between the first and the second acoustic resonators. The first acoustic resonator has a first electrical impedance and a first resonance frequency and includes a first set of electrodes, and a first piezoelectric layer having a first thickness, disposed between the first set of electrodes. The second acoustic resonator has a second electrical impedance and a second resonance frequency, and includes a second set of electrodes, and a second piezoelectric layer having a second thickness, wherein the second piezoelectric layer is disposed between the second set of electrodes. The first electrical impedance at a passband frequency of the device substantially differs from the second electrical impedance at the passband frequency of the device. The first and second resonance frequencies are substantially different from each other.
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