Method and apparatus for generating and detecting acoustic signals
    1.
    发明授权
    Method and apparatus for generating and detecting acoustic signals 失效
    用于产生和检测声信号的方法和装置

    公开(公告)号:US5854589A

    公开(公告)日:1998-12-29

    申请号:US956241

    申请日:1997-10-22

    CPC classification number: G08B13/2408 G08B13/2417 G08B13/2437 G08B13/2442

    Abstract: A magnetic/acoustic transducer is disclosed. The transducer can be used in security/smart tag applications. The transducer includes a sensor tag made of magnetic metallic glass having a relatively high magnetostriction and a relatively low coercivity. Driving signals are provided by an rf dipole loop antenna. The tag responds to the rf signals and converts the exciting magnetic field into acoustic signals via magnetoelastic coupling. That is, the tag is forced to vibrate in unison with the incident electromagnetic signals generating longitudinal acoustic waves along a length of the tag. This results in radiation of ultrasound waves in air which can then be detected and characterized using an ultrasound microphone or a piezoelectric sensor. The tag is provided having a length equal to one half or one quarter long of an acoustic wavelength so that an acoustic resonance condition is established to maximize the generation of ultrasound waves in air. The measured ultrasound signal is locked in phase with the excitation or reference signal for sensitive long-range detection. The tag can operate in a magnetized or a demagnetized state to stimulate binary signals for security-tag applications. Tags of different length and/or geometry can be deployed in combination so that the tag transducer produces unique and distinguishable frequency spectrums to be used as smart tags.

    Abstract translation: 公开了一种磁/音换能器。 传感器可用于安全/智能标签应用。 换能器包括由磁性金属玻璃制成的传感器标签,其具有较高的磁致伸缩和较低的矫顽力。 驱动信号由rf偶极环形天线提供。 标签响应rf信号,并通过磁弹性耦合将激发磁场转换为声信号。 也就是说,标签被迫与沿着标签的长度产生纵向声波的入射电磁信号一致地振动。 这导致在空气中的超声波的辐射,然后可以使用超声麦克风或压电传感器来检测和表征。 提供了具有等于声波长的一半或四分之一长度的长度的标签,使得建立声共振条件以使空气中的超声波的产生最大化。 测量的超声信号与激励或参考信号锁定在一起,用于灵敏的远程检测。 标签可以以磁化或去磁状态工作,以刺激二进制信号进行安全标签应用。 可以组合部署不同长度和/或几何的标签,使得标签传感器产生用作智能标签的唯一且可区分的频谱。

    Antenna array having two dimensional beam steering
    2.
    发明授权
    Antenna array having two dimensional beam steering 失效
    具有二维光束转向的天线阵列

    公开(公告)号:US5515059A

    公开(公告)日:1996-05-07

    申请号:US189185

    申请日:1994-01-31

    CPC classification number: H01Q3/44

    Abstract: An array antenna includes a ferrite substrate having a two-dimensional planar array of antenna elements disposed over a first surface thereof and means for applying an external magnetic field having a magnitude and direction which can be varied at least in a plane in which the antenna elements lie. The amplitude and direction of the external magnetic biasing field is varied to control the relative phases between each of the plurality of antenna elements and to steer the direction of a main antenna beam in two dimensions.

    Abstract translation: 阵列天线包括具有设置在其第一表面上的天线元件的二维平面阵列的铁氧体衬底和用于施加具有幅度和方向的外部磁场的装置,该外部磁场至少可以在天线元件 谎言。 改变外部磁偏置场的幅度和方向以控制多个天线元件中的每一个之间的相对相位并且在二维方向上引导主天线波束的方向。

    Planar squid magnetometer with inductively coupled microstrip resonator
    3.
    发明授权
    Planar squid magnetometer with inductively coupled microstrip resonator 失效
    具有电感耦合微带谐振器的平面鱿鱼磁强计

    公开(公告)号:US5420100A

    公开(公告)日:1995-05-30

    申请号:US682104

    申请日:1991-04-05

    CPC classification number: H01L39/225 G01R33/0358 Y10S505/846

    Abstract: A planar SQUID magnetometer for detection and measurement of an applied magnetic flux is disclosed wherein a planar microwave-resonant element overlaps a Josephson device incorporated in a high-T.sub.c superconducting, thin-film SQUID device, thereby providing inductive coupling between the planar microwave-resonant element and the SQUID device. When the microwave-resonant element is excited by incident high-frequency microwave radiation, the intensity of reflected microwave radiation varies in response to a magnetic flux applied to the SQUID device in accordance with non-linear oscillatory behavior of the microwave-resonant element due to inductive loading by the SQUID device. The microwave-resonant element and the SQUID device are preferably fabricated photolithographically on a single substrate.

    Abstract translation: 公开了一种用于检测和测量所施加的磁通量的平面SQUID磁力计,其中平面微波谐振元件与并入高Tc超导薄膜SQUID器件中的约瑟夫逊器件重叠,从而在平面微波谐振元件 元素和SQUID设备。 当微波谐振元件被入射的高频微波辐射激发时,反射的微波辐射的强度响应于根据微波谐振元件的非线性振荡特性而施加到SQUID器件的磁通量而变化,这是由于 SQUID器件的感性负载。 微波谐振元件和SQUID器件优选地光刻地制造在单个衬底上。

    Ferrite microstrip antenna
    4.
    发明授权
    Ferrite microstrip antenna 失效
    铁氧体微带天线

    公开(公告)号:US5327148A

    公开(公告)日:1994-07-05

    申请号:US18942

    申请日:1993-02-17

    CPC classification number: H01Q3/44 H01Q1/38

    Abstract: A microstrip antenna includes a ferrite loaded substrate having a ground plane conductor disposed over a first surface thereof and having a strip conductor disposed over a second surface thereof. A DC magnetic field biasing circuit provides a directed DC magnetic field to the ferrite substrate such that the strip conductor radiates electromagnetic energy having circular polarization. In one embodiment, a ferrite material is disposed over the strip conductor to reduce the radar cross section of the antenna.

    Abstract translation: 微带天线包括铁氧体负载衬底,其具有设置在其第一表面上的接地平面导体,并且具有设置在其第二表面上的带状导体。 直流磁场偏置电路向铁氧体基板提供定向的DC磁场,使得带状导体辐射具有圆极化的电磁能。 在一个实施例中,铁氧体材料设置在带状导体上以减小天线的雷达横截面。

    Fluxgate signal detection employing high-order waveform autocorrelation
    5.
    发明授权
    Fluxgate signal detection employing high-order waveform autocorrelation 失效
    使用高阶波形自相关的磁通门信号检测

    公开(公告)号:US06633160B2

    公开(公告)日:2003-10-14

    申请号:US09837729

    申请日:2001-04-19

    CPC classification number: G01R33/04

    Abstract: Disclosed is a method for improving the sensitivity of a fluxgate magnetometer for which high-order harmonics are detected and utilized in determining a weak external magnetic field expressed in the core region. These harmonic signals are processed coherently so as to increase the signal-to-noise ratio, since noise can only add to the signal incoherently at these harmonic frequencies. Also disclosed is a method for improving the sensitivity of a fluxgate magnetometer for which the technique of waveform autocorrelation is used in determining a weak external magnetic field expressed in the core region. By convolving the gated signal with a waveform duplicating the signal itself, noise content is effectively suppressed, thereby increasing the resolution power of the fluxgate magnetometer.

    Abstract translation: 公开了一种用于提高检测高次谐波的磁通门磁强计的灵敏度的方法,用于确定在芯区域中表示的弱外部磁场。 这些谐波信号被相干地处理,以增加信噪比,因为噪声只能在这些谐波频率处不连续地加到信号上。 还公开了一种用于提高磁通门磁强计的灵敏度的方法,其中使用波形自相关技术来确定在芯区域中表示的弱外部磁场。 通过将门控信号与复用信号本身的波形进行卷积,可有效抑制噪声含量,从而提高磁通门磁力计的分辨率。

    Tunable millimeter wave filter using ferromagnetic metal films
    6.
    发明授权
    Tunable millimeter wave filter using ferromagnetic metal films 失效
    可调式毫米波滤波器采用铁磁金属膜

    公开(公告)号:US5568106A

    公开(公告)日:1996-10-22

    申请号:US222468

    申请日:1994-04-04

    CPC classification number: H01P1/2039 H01P1/215

    Abstract: The present invention discloses a frequency tunable filter which includes an electromagnetic (E-M) wave propagation line which includes a microstrip and a ground plane in the substrate for transmitting a sequence of E-M signals via the propagation line. The E-M wave propagation line includes a frequency tuning mechanism, i.e., the magnetic layer, which is capable of utilizing a ferromagnetic anti-resonance frequency response to the E-M signals transmitted via the propagation line for controlling and frequency tuning the E-M signal transmission. In one of the preferred embodiments, the E-M wave propagation line includes a microstrip forming on the top surface of a dielectric or semiconductor substrate for receiving and transmitting the E-M signals and a ground plane forming on the bottom surface of the semiconductor substrate. And, the frequency tuning mechanism includes a ferromagnetic layer formed in the substrate between the microstrip and the ground plane.

    Abstract translation: 本发明公开了一种频率可调滤波器,其包括电磁(E-M)波传播线,其包括微带和基板中的接地平面,用于经由传播线传输一系列E-M信号。 E-M波传播线包括频率调谐机构,即磁性层,其能够利用经由传播线传输的E-M信号的铁磁反共振频率响应,以控制和频率调谐E-M信号传输。 在一个优选实施例中,E-M波传播线包括形成在电介质或半导体衬底的顶表面上的微带,用于接收和传输E-M信号,以及形成在半导体衬底的底表面上的接地平面。 并且,频率调谐机构包括在微带和接地平面之间的基板中形成的铁磁层。

    Method and apparatus of obtaining water conditioning utilizing localized hot zone
    7.
    发明授权
    Method and apparatus of obtaining water conditioning utilizing localized hot zone 失效
    利用局部热区获取水调节的方法和装置

    公开(公告)号:US06730235B2

    公开(公告)日:2004-05-04

    申请号:US10102053

    申请日:2002-03-21

    CPC classification number: A01K63/065

    Abstract: Disclosed is a method and an apparatus enabling water-conditioning processes to be performed using a heater initially equipped with an aquarium tank for the purpose of supplying heat. Instead of allowing heat to propagate globally, reactor housing is introduced in the tank enclosing the heater so as to form a localized hot zone. The temperatures of the hot zone are maintained at high degrees sufficient to initiate various water-conditioning processes with efficiency, including alga control, ammonia control, water-hardness control, and sterilization. The construction of the reactor housing is simple and inexpensive, and its geometry is compatible to a heater which can be purchased commercially. In short, multiple functions are added to a heater installed in an aquarium, performing water-conditioning processes in addition to the basic task of supplying heat, allowing water quality of the aquarium to be improved and maintained.

    Abstract translation: 公开了一种方法和装置,其能够使用最初装备有水族箱的加热器进行水处理工艺,以便供热。 代替使热量在全球范围内传播,反应器壳体被引入到封闭加热器的罐中,以形成局部热区。 热区的温度保持高度足以启动各种水处理工艺,包括藻类控制,氨控制,水硬度控制和灭菌。 反应器壳体的结构简单且便宜,其几何形状与可商购的加热器兼容。 简而言之,除了提供热量的基本任务之外,还可以将多种功能添加到安装在水族箱中的加热器中,进行水处理工艺,从而改善和维护水族箱的水质。

    Method and apparatus for structure characterization of layered
semiconductors
    8.
    发明授权
    Method and apparatus for structure characterization of layered semiconductors 失效
    层状半导体结构表征的方法和装置

    公开(公告)号:US5847573A

    公开(公告)日:1998-12-08

    申请号:US543250

    申请日:1995-10-13

    CPC classification number: G01R31/2648

    Abstract: A new technique is presented which exploits AC Hall effect in the characterization of layered semiconductor structures. The method involves the use of laser signals by means of optical fibers in the presence of a DC magnetic bias field. Upon incidence the polarization of the optical signal is rotated via a Lorentz force due to the AC Hall effect. As such, the reflected waves carry informations on the Hall mobility of the charge carriers. The calculations show that AC Hall reflection coefficient warrants sufficient intensity to be measured. Our theory is complete in the sense that depth profiling has been explicitly incorporated in the formulation.

    Abstract translation: 提出了一种利用交流霍尔效应来表征分层半导体结构的新技术。 该方法涉及在存在DC磁偏置场的情况下通过光纤使用激光信号。 在入射时,由于AC霍尔效应,光信号的偏振由洛伦兹力旋转。 因此,反射波携带关于电荷载体的霍尔迁移率的信息。 计算结果表明,交流霍尔反射系数需要足够的强度进行测量。 我们的理论是完整的,因为深度剖析已经明确地纳入了这个表述。

    Method and apparatus of obtaining broadband circulator/isolator operation by shaping the bias magnetic field
    9.
    发明授权
    Method and apparatus of obtaining broadband circulator/isolator operation by shaping the bias magnetic field 失效
    通过成形偏磁场获得宽带环行器/隔离器操作的方法和装置

    公开(公告)号:US07242264B1

    公开(公告)日:2007-07-10

    申请号:US11110073

    申请日:2005-04-21

    Applicant: Hoton How

    Inventor: Hoton How

    CPC classification number: H01P1/362

    Abstract: Disclosed is one method and one apparatus which teach improved techniques in using a shaped bias magnetic field over the active region of a ferrite stripline circulator/isolator circuit. The axial component of the bias field is decreased from the center toward edge, thus it is able to accommodate the accompanying changes in magnetization. This fulfills the requirements that frequencies are scaled with distances thereby warranting broadband operation. Furthermore, the radial component of the bias field is reduced, so as to minimize the generation of non-circulation volume modes. The discontinuity in magnetization distributed over the circulator/isolator active region is reduced, so as to minimize the generation of magnetostatic surface modes. The resultant circulator/isolator performance can thus show a broad bandwidth with improved characteristics in insertion loss and in isolation.

    Abstract translation: 公开了一种方法和一种装置,其教导在铁氧体带状线循环器/隔离器电路的有源区域上使用成形偏置磁场的改进技术。 偏置场的轴向分量从中心向边缘减小,因此能够适应伴随的磁化变化。 这满足了频率按距离缩放的要求,从而保证宽带操作。 此外,偏置场的径向分量减小,以便使不循环体积模式的产生最小化。 分布在循环器/隔离器有源区上的磁化不连续性减小,从而最小化静磁表面模式的产生。 因此,所得到的循环器/隔离器性能可以显示宽带宽,具有改进的插入损耗和隔离特性。

    Electronically tracked road-map system

    公开(公告)号:US06577933B2

    公开(公告)日:2003-06-10

    申请号:US09849894

    申请日:2001-05-07

    Applicant: Hoton How

    Inventor: Hoton How

    Abstract: Disclosed is a method for establishing and utilizing electronic tracks on roads for ground vehicles so as to ease the driving task with added safety and efficiency. Electronic tracks define traces on roads guiding the movement of a ground vehicle in as much as the same way that railroad tracks confine the movement of a train. Speed control can be achieved by using equipments detecting the driving conditions and the road environment along with the gliding action of the ground vehicle on electronic tracks. Automation in driving is thus possible, at least partially. Electronic map can be constructed consisting of many of the electronic tracks. Based upon both the static and dynamic information on roads, an electronic map is able to configure an optimal route connecting two addresses with the shortest time in traveling.

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