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1. 发明申请

US20190317161A1 SENSOR ELEMENT FOR MAGNETIC FIELDS HAVING HIGH FREQUENCY BANDWIDTH 审中-公开
公开(公告)号：US20190317161A1
公开(公告)日：2019-10-17
申请号：US16462314
申请日：2017-10-06
申请人： Christian-Albrechts-Universitaet zu Kiel
发明人： Eckhard Quandt , Anne Kittmann , Sebastian Zabel , Erdem Yarar , Franz Faupel , Reinhard Knoechel , Michael Hoeft , Phillip Durdaut
IPC分类号： G01R33/09 , G01R33/18 , G01L1/12 , G01N29/02
摘要： A magnetic field sensor element with a piezo electric substrate having predetermined shear wave velocity VS, two pairs of interdigital electrodes, arranged on the substrate on the ends of a delay section, having a period length p of at least 10 micrometers, a non-magnetic, electrically non-conductive guide layer arranged on the substrate along the delay section, and a magnetostrictive functional layer arranged on the guide layer, wherein the shear wave velocity in the guide layer is smaller than VS, wherein a) the substrate is oriented to generate and propagate mechanical shear waves upon applying a temporally periodic, electrical voltage to at least one interdigital electrode pair in the range of frequency VS/p and, wherein b) the thickness of the guide layer equals at least 10% and at at most 30% of the period length p of the interdigital electrodes.

2. 发明授权

US11137457B2 Sensor element for magnetic fields having high frequency bandwidth 有权
公开(公告)号：US11137457B2
公开(公告)日：2021-10-05
申请号：US16462314
申请日：2017-10-06
申请人： Christian-Albrechts-Universitaet zu Kiel
发明人： Eckhard Quandt , Anne Kittmann , Sebastian Zabel , Erdem Yarar , Franz Faupel , Reinhard Knoechel , Michael Hoeft , Phillip Durdaut
IPC分类号： G01R33/09 , G01R33/18 , G01L1/12 , G01N29/02
摘要： A magnetic field sensor element with a piezo electric substrate having predetermined shear wave velocity VS, two pairs of interdigital electrodes, arranged on the substrate on the ends of a delay section, having a period length p of at least 10 micrometers, a non-magnetic, electrically non-conductive guide layer arranged on the substrate along the delay section, and a magnetostrictive functional layer arranged on the guide layer, wherein the shear wave velocity in the guide layer is smaller than VS, wherein a) the substrate is oriented to generate and propagate mechanical shear waves upon applying a temporally periodic, electrical voltage to at least one interdigital electrode pair in the range of frequency VS/p and, wherein b) the thickness of the guide layer equals at least 10% and at most 30% of the period length p of the interdigital electrodes.

3. 发明申请

US20150247904A1 MAGNETOELECTRIC SENSOR AND METHOD FOR THE PRODUCTION THEREOF 有权
标题翻译：磁电传感器及其生产方法
公开(公告)号：US20150247904A1
公开(公告)日：2015-09-03
申请号：US14427714
申请日：2013-10-07
申请人： Christian-Albrechts-Universitaet zu Kiel
发明人： Andre Piorra , Eckhard Quandt
IPC分类号： G01R33/09
CPC分类号： G01R33/09 , H01L41/00 , H01L41/047
摘要： Magnetoelectric sensors that can be manufactured using known methods of thin film technology and output an ME voltage that is many times higher for a predetermined magnetic field than the known cantilever-beam sensor. The design that is termed separator ME sensor is characterised by the arrangement of a thick dielectric layer (14) between the ferroelectric (10) and the magnetostrictive phases (12), and by an electrode arrangement (18) applied on one side of the ferroelectric (10) and that is engineered to tap the ME voltage along the extent of the layer. Advantageously, it can be manufactured easily by coating conventional dielectric substrates (14) on the front and rear with one each of the functional layers (10, 12).
摘要翻译：可以使用已知的薄膜技术方法制造的电磁传感器，并输出与已知悬臂梁传感器相比预定磁场高出许多倍的ME电压。称为分离器ME传感器的设计的特征在于在铁电体（10）和磁致伸缩相（12）之间布置厚介电层（14），并且通过施加在铁电体的一侧上的电极装置（18）（10），并且被设计为沿着该层的程度敲击ME电压。有利地，可以通过用一个功能层（10,12）在前后涂覆常规电介质基板（14）来容易地制造。

4. 发明申请

US20210231757A1 MICROWAVE RESONATOR MAGNETIC FIELD MEASURING DEVICE AND MAGNETIC FIELD MEASURING METHOD 有权
公开(公告)号：US20210231757A1
公开(公告)日：2021-07-29
申请号：US17050957
申请日：2019-03-26
申请人： Christian-Albrechts-Universitaet zu Kiel
发明人： Sebastian Toxvaerd , Reinhard Knoechel , Eckhard Quandt , Lars Thormaehlen
IPC分类号： G01R33/18 , G01R33/02 , G01R1/067 , H01L41/12
摘要： A microwave resonator magnetic field measuring device (1) for measuring alternating magnetic fields, with a base plate (11) having at least one supporting/bearing/clamping point (111), at least one mechanical oscillator (12+13) formed as a microwave resonator in the form of a cantilever (13) having at least one magnetostrictive layer (12), the latter being connected and mounted at at least one point to the base plate (11) in the at least one supporting/bearing/clamping point (111), at least one input coupling means (161) for microwaves and at least one output coupling means (162) for microwaves, wherein the base plate (11) and the mechanical oscillator (12+13) formed as a microwave resonator are at least partly electrically conductive and electrically conductively connected to one another. Also, a magnetic field measuring method having a magnetic field measuring device according to the invention.

5. 发明申请

US20190117845A1 LAYER HAVING VARIABLE STRENGTH 审中-公开
公开(公告)号：US20190117845A1
公开(公告)日：2019-04-25
申请号：US16094553
申请日：2017-03-23
申请人： Christian-Albrechts-Universitaet zu Kiel
发明人： Michael Timmermann , Soeren Gutekunst , Christine Selhuber-Unkel , Eckhard Quandt
IPC分类号： A61L27/50 , A61L27/54
摘要： A layer having individual elements made of an elastic material, with the length thereof exceeding the diameter thereof, which are secured on a carrier at a distance to one another, wherein the elements can be moved towards and away from one another, the elements can contact when moving towards one another, the outer surfaces of the elements provided with a surface modification, and the surface modification containing substances that can form reversible, non-covalent bonds. Also, a method for producing the layer, and the use of the layer.

6. 发明申请

US20180299514A1 MAGNETOELECTRIC MAGNETIC FIELD MEASUREMENT WITH FREQUENCY CONVERSION 审中-公开
公开(公告)号：US20180299514A1
公开(公告)日：2018-10-18
申请号：US15578751
申请日：2016-05-31
申请人： Christian-Albrechts-Universitaet zu Kiel
发明人： Patrick Hayes , Andre Piorra , Reinhard Knoechel , Eckhard Quandt
IPC分类号： G01R33/00 , G01R33/02 , G01B7/16 , H01L41/047
摘要： A magnetic field measuring method using a magnetoelectric composite element as an oscillator, in which a time-dependent measurement magnetic field acts on the magnetostrictive phase of the composite element, and an electrical measurement voltage is tapped off across the piezoelectric phase of the composite element and is used to infer the measurement magnetic field. At least one dielectric phase is connected to the magnetostrictive phase of the composite element by a material bond. When an electrical voltage is applied, the dielectric phase exhibits a change in length, the magnitude of which depends in a non-linear manner on the magnitude of the voltage, and a temporally periodic electrical modulation voltage is applied to the dielectric phase.

7. 发明授权

US09841472B2 Magnetoelectric sensor and method for the production thereof 有权
公开(公告)号：US09841472B2
公开(公告)日：2017-12-12
申请号：US14427714
申请日：2013-10-07
申请人： Christian-Albrechts-Universitaet zu Kiel
发明人： Andre Piorra , Eckhard Quandt
IPC分类号： G01R19/00 , G01R33/09 , H01L41/00 , H01L41/047
CPC分类号： G01R33/09 , H01L41/00 , H01L41/047
摘要： Magnetoelectric sensors that can be manufactured using known methods of thin film technology and output an ME voltage that is many times higher for a predetermined magnetic field than the known cantilever-beam sensor. The design that is termed separator ME sensor is characterized by the arrangement of a thick dielectric layer (14) between the ferroelectric (10) and the magnetostrictive phases (12), and by an electrode arrangement (18) applied on one side of the ferroelectric (10) and that is engineered to tap the ME voltage along the extent of the layer. Advantageously, it can be manufactured easily by coating conventional dielectric substrates (14) on the front and rear with one each of the functional layers (10, 12).

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