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    Spectrum extension edgeless gating for reduced time domain gating edge errors
    1.
    发明授权
    Spectrum extension edgeless gating for reduced time domain gating edge errors 有权

    公开(公告)号：US10816584B2

    公开(公告)日：2020-10-27

    申请号：US15830658

    申请日：2017-12-04

    Applicant: ETS-Lindgren Inc.

    Inventor： Zhong Chen ,  Zubiao Xiong

    IPC: G01R27/28 ,  G06F17/17 ,  G01R27/32

    Abstract: A method and system for processing finite frequency domain data to which a time gating process is to be applied to improve performance of signal processing equipment and to facilitate complex time gating while suppressing edge effects. According to one aspect, a method for improved processing of a finite frequency signal by signal processing equipment to suppress edge effects arising from a time gating process is provided. The method includes padding the finite frequency signal outside a frequency range with samples derived from an extrapolation process to produce an extended signal having samples inside and outside the frequency range of the finite signal. The method further includes applying a time gating process to the extended signal to exclude signals occurring outside a time interval and to produce a time gated signal with suppressed edge effects.

    System and method for power control of an over-the-air RF environment emulator
    2.
    发明授权
    System and method for power control of an over-the-air RF environment emulator 有权

    公开(公告)号：US10470135B2

    公开(公告)日：2019-11-05

    申请号：US16288672

    申请日：2019-02-28

    Applicant: ETS-Lindgren Inc.

    Inventor： Michael David Foegelle

    IPC: H04W52/04 ,  H04B17/391 ,  H04B17/13 ,  H04B17/29

    Abstract: Methods, tests systems and computers for controlling power delivered to a test volume are provided. According to one aspect, an electromagnetic test system has at least one operational path having a channel emulator output, an amplifier, an attenuator and an antenna. A method includes, for a given desired output power level, C, setting a channel emulator output power to a power level B, and setting the attenuator to a setting A, such that C is a function of B and A. In such embodiments, the attenuation A may be calculated based on an upper limit output power of the channel emulator and the desired output power C.

    Acoustic chamber with low frequency transparency
    3.
    发明授权
    Acoustic chamber with low frequency transparency 有权

    公开(公告)号：US09799317B2

    公开(公告)日：2017-10-24

    申请号：US15093092

    申请日：2016-04-07

    Applicant: ETS-Lindgren Inc.

    Inventor： Douglas Winker

    IPC: G10K11/16

    CPC classification number: G10K11/16 ,  E04B1/8218 ,  E04B2001/8419 ,  E04B2001/8433

    Abstract: An acoustic chamber with low frequency outer wall transmissivity is provided. According to one aspect, an acoustic chamber has an inner wall encompassing an interior of the acoustic chamber and configured to allow acoustic energy to penetrate the inner wall. The acoustic chamber also has an outer wall configured to allow low frequency acoustic energy that penetrates the inner wall to penetrate the outer wall and leave the acoustic chamber.

    Multiseal door, method for sealing an enclosure
    4.
    发明授权
    Multiseal door, method for sealing an enclosure 有权
    多门，密封外壳的方法

    公开(公告)号：US09140055B2

    公开(公告)日：2015-09-22

    申请号：US14222455

    申请日：2014-03-21

    Applicant: ETS-LINDGREN INC.

    Inventor： Jerry W. Skibinski ,  Stanley J. Zielinski ,  Saulius Gugis ,  Joseph C. Weibler

    IPC: E06B7/16 ,  E06B7/28 ,  E06B7/232 ,  E06B5/18 ,  E05F7/00

    CPC classification number: E06B7/16 ,  E05F7/005 ,  E06B5/18 ,  E06B7/232 ,  E06B7/28

    Abstract: The invention provides a door system which has a door leaf with a first horizontally disposed edge and a second horizontally disposed edge inferior to the first horizontally disposed edge. The door system also includes a rod-less cylinder in communication with the first horizontally disposed edge and a cam surface formed with the second horizontally disposed edge. The cam surface limits the door to a single plane of movement relative to an opening of an enclosure defining a door jamb.

    Abstract translation: 本发明提供一种门系统，其具有第一水平设置的边缘的门扇和与第一水平设置的边缘相比第二水平设置的边缘。 门系统还包括与第一水平设置的边缘连通的无杆气缸和形成有第二水平设置的边缘的凸轮表面。 凸轮表面将门限于相对于限定门侧柱的外壳的开口的单个移动平面。

    MOVABLE EMF SHIELD, METHOD FOR FACILITATING RAPID IMAGING AND TREATMENT OF PATIENT
    7.
    发明申请
    MOVABLE EMF SHIELD, METHOD FOR FACILITATING RAPID IMAGING AND TREATMENT OF PATIENT 有权
    可移动EMF屏障，促进快速成像和治疗患者的方法

    公开(公告)号：US20140003023A1

    公开(公告)日：2014-01-02

    申请号：US13911885

    申请日：2013-06-06

    Applicant: Joseph C. Weibler ,  Thomas O. Orzechowski ,  Steven T. Kilgore ,  Michael G. Hamouz

    Inventor： Joseph C. Weibler ,  Thomas O. Orzechowski ,  Steven T. Kilgore ,  Michael G. Hamouz

    IPC: H05K9/00

    CPC classification number: H05K9/0003 ,  A61B5/0046 ,  A61B5/055 ,  A61N2005/1055 ,  G01R33/422 ,  G01R33/4808

    Abstract: A radio frequency shield which reversibly transects an electromagnetic frequency enclosure is provided. The shield includes first a number of panels attached to a first surface of the enclosure. The panels are adapted to move through a first arc relative to the first surface. Shield also includes a first panel from the number of panels having a first leading edge capable of transecting the first arc. The shield further includes a second number of panels attached to a second surface of the enclosure. The second set of panels is adapted to move through an arc relative to the second surface of the enclosure. Also a second panel from said second set of panels has a second leading edge capable of transecting the second arc so as to oppose the first leading edge. Finally, the shield includes a means for reversibly attaching the first leading edge to the second leading edge while simultaneously establishing electrical communication between the first and second plurality of panels.

    Abstract translation: 提供了可逆地横切电磁频率外壳的射频屏蔽。 屏蔽包括首先连接到外壳的第一表面的多个面板。 面板适于相对于第一表面移动通过第一弧。 屏蔽还包括具有能够横切第一弧的第一前缘的面板数量的第一面板。 屏蔽还包括连接到外壳的第二表面的第二数量的面板。 第二组面板适于相对于外壳的第二表面移动通过弧。 此外，来自所述第二组面板的第二面板具有能够横切第二弧线以与第一前缘相对的第二前缘。 最后，屏蔽件包括用于将第一前沿可逆地附接到第二前缘同时建立第一和第二多个面板之间的电连通的装置。

    FIELD PROBE ISOTROPIC COMPENSATION USING ORTHOGONAL SCALAR FIELD COMPONENTS
    8.
    发明申请
    FIELD PROBE ISOTROPIC COMPENSATION USING ORTHOGONAL SCALAR FIELD COMPONENTS 有权

    公开(公告)号：US20230072530A1

    公开(公告)日：2023-03-09

    申请号：US17987465

    申请日：2022-11-15

    Applicant: ETS Lindgren Inc.

    Inventor： Zhong CHEN

    IPC: G01R29/08 ,  G01R35/00

    Abstract: A method, system and apparatus for compensating for non-ideal isotropic behavior of a field probe are disclosed. A method includes, during a calibration procedure, for each of a plurality of positions of the field probe relative to a source, each position denoted by a set of angles (θ,ϕ), performing the following steps: measuring a field by the sensors of the probe, storing the measurements and the set of angles (θ,ϕ) for each measurement, computing a correction factor for the set of angles (θ,ϕ) based on the measurement, and storing the correction factors. During a measurement procedure, each sensor measures a component of the field. A set of angles is determined based on the sensor measurements, and a correction factor is determined based on the set of angles. The correction factor may then be multiplied by the sensor measurements to obtain the corrected field measurements.

    ADA COMPLIANT SHIELDED DOOR
    9.
    发明申请
    ADA COMPLIANT SHIELDED DOOR 有权

    公开(公告)号：US20220132710A1

    公开(公告)日：2022-04-28

    申请号：US17572788

    申请日：2022-01-11

    Applicant: ETS-Lindgren Inc.

    Inventor： Brian Adair Rodgers

    IPC: H05K9/00 ,  E06B7/22

    Abstract: An ADA compliant shielded door is disclosed. According to one aspect, a door is configured to create a radio frequency (RF) seal when the door is sealed so that RF energy is restricting from passing through a gap between an outer periphery of the door and a door frame when the door is sealed. The door includes: at least one knife edge along at least part of the outer periphery of the door, each knife edge configured to project into a channel of a door frame in a direction parallel to a face of the door when the door is sealed. The door also includes at least one contact element along a length of a knife edge, the at least one contact element being configured to make electrical contact with a channel wall of a channel of the door frame when the knife edge projects into the channel.

    Distributed system for radio frequency environment simulation
    10.
    发明授权
    Distributed system for radio frequency environment simulation 有权

    公开(公告)号：US10581538B2

    公开(公告)日：2020-03-03

    申请号：US15222007

    申请日：2016-07-28

    Applicant: ETS-Lindgren Inc.

    Inventor： Michael David Foegelle

    IPC: H04B17/00 ,  H04B17/364

    Abstract: In some embodiments, an electromagnetic measurement system to test a device under test, DUT, in a chamber is provided. Within the chamber, for each of at least one emulated channel, a first emulator core is configured to introduce an impairment in each of at least one transmit signal to produce an impaired signal, and a transmitter is configured to convert the impaired signal to a radio frequency, RF, signal to be transmitted by an antenna.

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