利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

178 records (took 0.025 seconds)

    DETERMINING A DELAY IN SIGNAL TRANSMISSION ALONG A WIRED TRANSMISSON MEDIUM
    1.
    发明申请
    DETERMINING A DELAY IN SIGNAL TRANSMISSION ALONG A WIRED TRANSMISSON MEDIUM 有权

    公开(公告)号：US20240430185A1

    公开(公告)日：2024-12-26

    申请号：US18216799

    申请日：2023-06-30

    Applicant: LitePoint Corporation

    Inventor： Chen CAO ,  Christian Volf Olgaard ,  Ruizu Wang ,  Qingjie Lu

    IPC: H04L43/0852

    Abstract: An example system includes a signal generator to output signals based on multiple carrier frequencies; a wired transmission medium for carrying the signals, where the wired transmission medium is configured as open ended to produce reflections on the wired transmission medium of the signals; and a signal analyzer to receive the reflections and to determine a transmission time of a signal along the wired transmission medium based on the reflections. The signal analyzer is configured to perform operations that include performing a search based on an estimated transmission time of the signal along the wired transmission medium and the reflections to determine the transmission time. The search is to determine which of multiple candidate transmission times to select for the transmission time.

    REMOVING TEST EQUIPMENT NOISE FROM POWER SPECTRAL DENSITY MEASUREMENTS
    2.
    发明公开
    REMOVING TEST EQUIPMENT NOISE FROM POWER SPECTRAL DENSITY MEASUREMENTS 审中-公开

    公开(公告)号：US20240361376A1

    公开(公告)日：2024-10-31

    申请号：US18144019

    申请日：2023-05-05

    Applicant: LitePoint Corporation

    Inventor： Chen Cao ,  Christian Volf Olgaard ,  Ruizu Wang ,  Qingjie Lu

    IPC: G01R31/28 ,  G01R23/18

    CPC classification number: G01R31/2837 ,  G01R23/18 ,  G01R31/2841

    Abstract: An example method includes the following operations: (i) receiving a device signal from a device under test (DUT); (ii) setting an attenuation value; (iii) applying the attenuation value to the device signal to produce an attenuated device signal for a frequency spectrum analyzing device, where the frequency spectrum analyzing device produces a noise signal; (iv) obtaining a power spectral density value using the frequency spectrum analyzing device, where a power spectral density comprises a power, at a frequency value, of a combined signal that is based on the attenuated device signal and the noise signal; (v) repeating operations (ii), (iii), and (iv) one or more times to produce multiple power spectral density values; (vi) repeating operations (i), (ii), (iii), (iv), and (v) one or more times to add power spectral density values to the multiple power spectral density values; and (vii) obtaining a power spectral density of the device signal.

    System and method for over-the-air (OTA) testing to detect faulty elements in an active array antenna of an extremely high frequency (EHF) wireless communication device
    3.
    发明授权
    System and method for over-the-air (OTA) testing to detect faulty elements in an active array antenna of an extremely high frequency (EHF) wireless communication device 有权

    公开(公告)号：US11454662B1

    公开(公告)日：2022-09-27

    申请号：US17471868

    申请日：2021-09-10

    Applicant: LitePoint Corporation

    Inventor： Minh-Chau Huynh

    IPC: G01R27/28 ,  G01R29/10 ,  H01Q3/26

    Abstract: Systems and methods for detecting faulty elements in an active planar antenna array of an extremely high frequency (EHF) wireless communication device. A planar antenna array having a matrix of dual-polarization modulated scattering probes is disposed within a near-field region of the antenna under test (AUT). Electromagnetic energy received from the AUT is converted to a complex electrical signal that is modulated by an electrical modulation signal and radiated as a scattering signal. The resulting electromagnetic scattering signal, received and converted to an electrical signal by another antenna, is used in a holographic image reconstruction operation via a backward-propagation transformation to reconstruct the signal spectrum radiated from the surface of the AUT. Configurable (e.g., electrically) scatter probes provide maximized modulation depths (MDs) over wide frequency ranges.

    Vector network power meter
    8.
    发明授权
    Vector network power meter 有权

    公开(公告)号：US09720023B2

    公开(公告)日：2017-08-01

    申请号：US14270672

    申请日：2014-05-06

    Applicant: Litepoint Corporation

    Inventor： Christopher Dennis Ziomek ,  Stephen Jachim

    IPC: G01R27/04 ,  G01R27/28

    CPC classification number: H04B17/16 ,  G01R27/28

    Abstract: System and method for implementing a Vector Network Power Meter (VNPM) as a new class of electronic test instrument that uses a novel topology based upon a reflectometer to combine the functionality of a Power Meter with that of a Vector Network Analyzer (VNA). The VNPM overcomes application limitations of the two existing classes of test instruments, including parallel and simultaneous measurement capability, in-circuit operation, and improved accuracy and repeatability by eliminating the calibration of interconnecting cabling. Also provided are alternate implementations of a correlator for the reflectometer which reduce the size and complexity of the correlator while extending its frequency range without limit.

    System and method for confirming radio frequency (RF) signal connection integrity with multiple devices under test (DUTs) to be tested concurrently
    9.
    发明授权
    System and method for confirming radio frequency (RF) signal connection integrity with multiple devices under test (DUTs) to be tested concurrently 有权
    用于确定要同时测试的多个待测器件（DUT）的射频（RF）信号连接完整性的系统和方法

    公开(公告)号：US09167459B2

    公开(公告)日：2015-10-20

    申请号：US13791098

    申请日：2013-03-08

    Applicant: LITEPOINT CORPORATION

    Inventor： Christian Volf Olgaard

    IPC: H04B17/00 ,  H04W24/08 ,  H04B17/17 ,  H01Q3/26 ,  H04B3/462

    CPC classification number: H04W24/08 ,  H01Q3/267 ,  H04B3/462 ,  H04B17/0085 ,  H04B17/17

    Abstract: System and method for confirming radio frequency (RF) signal connections with multiple devices under test (DUTs) tested concurrently using replicas of a RF test signal. Cabled signal connections between the signal source and the DUTs are monitored by sensing levels of outgoing and related reflection RF signals. These signal levels are compared against similar signal levels when the outgoing RF signals are provided to reference impedances. Alternatively, the cabled signal connections have lengths of known signal wavelengths and the RF test signal frequency is swept such that minimum and maximum time delays between the outgoing and reflection RF signals go through minimum and maximum signal cycles with a difference of at least one full cycle. The reflection RF signal magnitude and phase are monitored, from which peak and valley signal level differences and phase changes are identified to determine return loss and phase changes indicative of DUT connection.

    Abstract translation: 使用RF测试信号的副本同时测试的多个待测器件（DUT）确定射频（RF）信号连接的系统和方法。 通过感测输出和相关反射RF信号的电平来监测信号源和DUT之间的电缆信号连接。 当将输出RF信号提供给参考阻抗时，将这些信号电平与类似的信号电平进行比较。 或者，电缆信号连接具有已知信号波长的长度，并且扫描RF测试信号频率，使得出射和反射RF信号之间的最小和最大时间延迟经过最小和最大信号周期，其中至少一个全周期 。 监测反射RF信号幅度和相位，从中识别峰谷信号电平差和相位变化，以确定指示DUT连接的回波损耗和相位变化。

    Apparatus and method for operating automated test equipment (ATE)
    10.
    发明授权
    Apparatus and method for operating automated test equipment (ATE) 有权
    自动化测试设备（ATE）的设备和方法

    公开(公告)号：US09160554B1

    公开(公告)日：2015-10-13

    申请号：US11931566

    申请日：2007-10-31

    Applicant: Christian Volf Olgaard ,  Thomas Toldborg Andersen ,  Carsten Andersen

    Inventor： Christian Volf Olgaard ,  Thomas Toldborg Andersen ,  Carsten Andersen

    IPC: G01R31/14 ,  H04L12/26 ,  G01R31/3183

    CPC classification number: H04L12/2697 ,  G01R31/31707 ,  G01R31/318307 ,  G01R31/319 ,  H04L43/50

    Abstract: An apparatus and method of operating automated test equipment (ATE) in a networked environment of multiple external test controllers. The system resources responsible for coordinating the shared uses of the ATE by the multiple external test controllers are centralized within the ATE. As a result, programming of the respective test controllers is simplified since the test controllers no longer need be responsible for communicating among themselves to coordinate or otherwise determine how and when access to the ATE is granted to any particular test controller.

    Abstract translation: 在多个外部测试控制器的网络环境中操作自动测试设备（ATE）的设备和方法。 负责协调多个外部测试控制器的ATE共享使用的系统资源集中在ATE内。 因此，各个测试控制器的编程被简化，因为测试控制器不再需要负责在它们之间进行通信，以协调或以其他方式确定如何以及何时向任何特定的测试控制器访问ATE。

Patent Agency Ranking