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1.发明授权公开(公告)号：US06346865B1
公开(公告)日：2002-02-12
申请号：US09302104
申请日：1999-04-29
申请人： Clyde Maynord Callewaert , Edward Patrick Manning , Joseph Vito Mantese , Dominic Anthony Messuri , Adolph Louis Micheli , Steven A Musick , William Thomas Phillips, Jr. , Norman William Schubring , Dennis Forest Dungan
发明人： Clyde Maynord Callewaert , Edward Patrick Manning , Joseph Vito Mantese , Dominic Anthony Messuri , Adolph Louis Micheli , Steven A Musick , William Thomas Phillips, Jr. , Norman William Schubring , Dennis Forest Dungan
IPC分类号： H03H701
CPC分类号： H03H1/0007
摘要： An EMI filter (10) that makes use of a ferroelectric-ferromagnetic composite, member, or slab (12) in connection with capacitive and inductive elements. The geometrical structure of the filter (10) is such that the mutually orthogonal electric fields and magnetic fields generated by the capacitive and inductive elements penetrate the volume of the composite (12). In some designs, capacitive plates (14, 18, 32, 34) are split to avoid setting up eddy currents in the plates (14, 18, 32, 34) which oppose the penetration of magnetic flux through the composite (12). Various structural designs can be provided to define the capacitive elements and the inductive elements in different configurations relative to the composite to satisfy the desirable requirements. One particular low-pass design includes providing a slab (12) of the composite with plates (14, 18, 32, 34) on opposite sides of the slab (12) that define capacitors, and a conductive strip (20) wrapped around the slab (12) and electrically connected to the hot capacitive plates (14, 18) that define the inductor. This basic configuration can be extended to a cylinder (52) made of the composite, where a ground plane (56) is provided on one surface (54) of the cylinder (52), and the hot capacitor plates (60, 64) are provided on the other surface (62) of the cylinder (52), where a conductive strip (70) on the other surface (62) defines the coil. A multi-layer filter (76) can be provided that includes layered substrates (78) where metallized vias (80) extending through the substrates (78) define a coil, and ground planes (124) and capacitive plates (112, 114) on alternating substrates (78) define the capacitive elements.
摘要翻译： 一种EMI滤波器（10），其利用与电容和电感元件结合的铁电 - 铁磁复合材料，构件或板（12）。 滤波器（10）的几何结构使得由电容和电感元件产生的相互正交的电场和磁场穿透复合材料（12）的体积。 在一些设计中，电容板（14,18,32,34）被分开以避免在板（14,18,32,34）中设置涡流，其反对磁通量通过复合材料（12）的穿透。 可以提供各种结构设计来定义相对于复合材料的不同构造的电容元件和电感元件以满足期望的要求。 一种特定的低通设计包括在板（12）的限定电容器的相对侧上提供复合材料板（12）和板（14,18,32,34），以及围绕 板（12）并且电连接到限定电感器的热电容板（14,18）。 该基本构造可以扩展到由复合材料制成的圆筒（52），其中在气缸（52）的一个表面（54）上设置接地平面（56），并且热电容器板（60,64） 设置在所述气缸（52）的另一个表面（62）上，其中另一个表面（62）上的导电条（70）限定所述线圈。 可以提供多层过滤器（76），其包括分层衬底（78），其中延伸穿过衬底（78）的金属化通孔（80）限定线圈，以及接地平面（124）和电容板（112,114） 交替的基板（78）限定电容元件。
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公开(公告)号：US07022991B2
公开(公告)日：2006-04-04
申请号：US10170292
申请日：2002-06-12
申请人： Norman William Schubring , Joseph Vito Mantese , Adolph Louis Micheli , Gregory William Auner , Ratna Naik
发明人： Norman William Schubring , Joseph Vito Mantese , Adolph Louis Micheli , Gregory William Auner , Ratna Naik
IPC分类号： G01J5/00
CPC分类号： G01J5/34
摘要： A pyroelectric sensor having an active regulation for maximizing pyroelectric sensor sensitivity is disclosed. The pyroelectric sensor comprises a ferroelectric transducer, and a regulator. The ferroelectric transducer may either be a homogenous ferroelectric transducer, a compositionally graded ferroelectric transducer, or an externally graded ferroelectric transducer. The regulator may either be an excitation regulator or a temperature regulator. A method for regulating the excitation or the temperature of a pyroelectric sensor for maximizing sensitivity of the pyroelectric sensor is also disclosed.
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公开(公告)号：US5856770A
公开(公告)日：1999-01-05
申请号：US844672
申请日：1997-04-18
CPC分类号： H03H1/0007 , H01R13/7197
摘要： A material which possesses both capacitive and inductive properties for suppressing electromagnetic interference is provided, wherein the material is a composite of a ferroelectric material and a ferromagnetic material. The ferroelectric-ferromagnetic composite material is formulated and processed so as to retain the distinct electrical properties of the individual constituents according to the relative quantities of the constituents present in the ferroelectric-ferromagnetic composite material. As a unitary composite element, the ferroelectric-ferromagnetic composite is readily formable to provide a compact electrical filter whose filtering capability is highly suitable for suppressing electromagnetic interference from sources internal and external to an automotive environment. The sintered composite has a very low porosity; interconnectivity between the ferroelectric and ferromagnetic phases; and has no chemical reaction between the ferroelectric and ferromagnetic phases to produce a third phase.
摘要翻译： 提供了具有用于抑制电磁干扰的电容和电感特性的材料，其中该材料是铁电材料和铁磁材料的复合材料。 铁电 - 铁磁复合材料被配制和加工，以便根据存在于铁电 - 铁磁复合材料中的组分的相对量来保持各个组分的不同电性能。 作为单体复合元件，铁电 - 铁磁性复合材料易于形成，以提供紧凑的滤波器，其滤波能力非常适合于抑制来自汽车环境内部和外部的源的电磁干扰。 烧结复合材料具有非常低的孔隙率; 铁电相和铁磁相之间的互连; 并且在铁电和铁磁相之间没有化学反应以产生第三相。
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公开(公告)号：US06339221B1
公开(公告)日：2002-01-15
申请号：US09454871
申请日：1999-12-03
IPC分类号： G01J510
摘要： A ferroelectric/pyroelectric sensor that employs a technique for determining a charge output of a pyroelectric element of the sensor by measuring the hysteresis loop output of the element several times during a particular time frame for the same temperature. An external AC signal is applied to the pyroelectric element to cause the hysteresis loop output from the element to switch polarization. Charge integration circuitry, such as a combination capacitor and operational amplifier, is employed to measure the charge from the element. A mechanical shutter is not used, and thus the charge integration output from the element is directly proportional to the incident radiation thereof.
摘要翻译： 一种铁电/热电传感器，其采用用于通过在相同温度的特定时间范围内测量元件的磁滞回线输出数次来确定传感器的热电元件的电荷输出的技术。 向热电元件施加外部AC信号以使得从元件输出的磁滞回线转换偏振。 采用诸如组合电容器和运算放大器的电荷积分电路来测量元件的电荷。 不使用机械快门，因此来自元件的电荷积分输出与其入射辐射成正比。
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5.发明授权公开(公告)号：US06294784B1
公开(公告)日：2001-09-25
申请号：US09241149
申请日：1999-02-01
IPC分类号： G01J510
CPC分类号： G01J5/34
摘要： A ferroelectric/pyroelectric sensor that employs a technique for determining a charge output of a pyroelectric element of the sensor by measuring the hysteresis loop output of the element several times during a particular time frame for the same temperature. An external AC signal is applied to the pyroelectric element to cause the hysteresis loop output from the element to switch polarization. The frequency of the external AC signal is greater than the frequency of a chopper selectively applying a reference temperature and a scene temperature alternately to the pyroelectric element. Each time the chopper provides the reference temperature or the scene temperature to the element, the alternating external source covers multiple cycles so that the hysteresis loop output is switched multiple times for increased signal averaging. Because the shape and size of the loop is different for the reference temperature and the scene temperature, a comparison between the measured charge for both time periods can be provided to give a signal having an increased signal-to-noise ratio.
摘要翻译： 一种铁电/热电传感器，其采用用于通过在相同温度的特定时间范围内测量元件的磁滞回线输出数次来确定传感器的热电元件的电荷输出的技术。 向热电元件施加外部AC信号以使得从元件输出的磁滞回线转换偏振。 外部AC信号的频率大于选择性地向热电元件施加基准温度和场景温度的斩波器的频率。 每次斩波器为元件提供参考温度或场景温度时，交替的外部源都会覆盖多个周期，以便使磁滞回线输出多次切换以增加信号平均。 由于循环的形状和尺寸对于参考温度和场景温度是不同的，所以可以提供两个时间段的测量的电荷之间的比较，以给出具有增加的信噪比的信号。
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