公开(公告)号：US09794009B1

公开(公告)日：2017-10-17

申请号：US15197966

申请日：2016-06-30

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard ,  Roman Schilter ,  Minh-Chau Huynh ,  Carsten Andersen

IPC: H04B17/29 ,  H04B17/15 ,  H04B7/06

CPC classification number: H04B17/29 ,  H04B7/0617 ,  H04B17/0085 ,  H04B17/15 ,  H04B17/318

Abstract: Method for testing implicit beamforming operation of a radio frequency (RF) data packet signal transceiver device under test (DUT), including transmitting to the DUT combinations of a multidirectional (e.g., legacy) RF test signal and at least two unidirectional (e.g., beamformed) RF test signals with different signal directivity patterns, and monitoring signal strengths of signals received from the DUT in response to each signal. Signal directivity patterns can be controlled by transmitting multiple phase-controlled RF signals via separate arrays of multiple antenna elements to the DUT within a multipath RF signal environment, such as an electromagnetically shielded enclosure.

公开(公告)号：US09923647B1

公开(公告)日：2018-03-20

申请号：US15381618

申请日：2016-12-16

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard ,  Zhiyong Huang ,  Yen-Fang Chao ,  Roman Schilter ,  Stefan Kildegaard Klukowski

IPC: H04B7/06 ,  H04B17/12

CPC classification number: H04B17/12

Abstract: A method for enabling confirmation of expected phase shifts of radio frequency (RF) signals emitted from respective elements of an antenna array, such as a phased array antenna used for providing directional RF signal radiation patterns needed for beamforming. As a RF signal transmitted via an antenna element of the antenna array is shifted, e.g., stepped, in phase, the resulting received RF signal is monitored. Following detection of a phase shift, a sample of the received RF signal is captured and stored, e.g., for subsequent analysis, such as comparison with one or more expected signal phase differences to characterize the directivity of the transmitted signal.

公开(公告)号：US20160050569A1

公开(公告)日：2016-02-18

申请号：US14795390

申请日：2015-07-09

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard ,  Roman Schilter ,  Guang Shi

IPC: H04W24/02 ,  H04L29/06 ,  H04B7/04

CPC classification number: H04W24/02 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/084 ,  H04B7/086

Abstract: Method for testing implicit beamforming performance of a multiple-input multiple-output (MIMO) radio frequency (RF) data packet signal transceiver device under test (DUT). The data packet signals forming the sequential data packet signal transmissions used for beamforming are produced with a selectively varied phase difference and conveyed via internal RF signal paths to external transmit terminals. Combining these transmitted data packet signals produces a combined data packet signal in which a peak power occurs during which a particular phase difference is being induced between the sequential DUT data packet signal transmissions used for the beamforming. This phase difference corresponds to the difference in RF signal phase lengths between the internal RF signal paths of the DUT, and is thereby indicative of the amount of phase shift needed between the sequential DUT data packet signal transmissions used for the beamforming to enable optimal implicit beamforming performance.

Abstract translation: 用于测试多输入多输出（MIMO）射频（RF）数据分组信号收发器设备（DUT）的隐含波束成形性能的方法。 形成用于波束形成的顺序数据分组信号传输的数据分组信号通过选择性地变化的相位差产生，并经由内部RF信号路径传送到外部发送终端。 组合这些发送的数据分组信号产生组合的数据分组信号，其中发生峰值功率，在该峰值功率期间，在用于波束形成的连续的DUT数据分组信号传输之间正在感应出特定的相位差。 该相位差对应于DUT的内部RF信号路径之间的RF信号相位长度的差异，并且因此指示用于波束成形的顺序DUT数据分组信号传输之间所需的相移量，以实现最佳隐含波束成形 性能。

公开(公告)号：US08839055B2

公开(公告)日：2014-09-16

申请号：US13923638

申请日：2013-06-21

Applicant: Litepoint Corporation

Inventor： Nabil Ayoub Elserougi ,  Thomas Toldborg Andersen ,  Roman Schilter

IPC: G01R31/319 ,  H04B17/00 ,  G01R31/40

CPC classification number: H04B17/0017 ,  H04B17/15

Abstract: A system and method for the execution of a program comprises a user-defined sequence of standard hardware and analysis module commands of an instrument, in the context of a tester comprising a plurality of VSAs and VSGs, or other hardware measurement modules types, where the coordination of command execution and resource availability is built into the system as an inherent part of its overall architecture. As such, the commands are the same as those ordinarily executed in piecemeal fashion, but are now automatically and sequentially executed in an atomic and deterministic manner through the coordinated interaction of embodiments of the invention.

Abstract translation: 在包括多个VSA和VSG或其他硬件测量模块类型的测试器的上下文中，用于执行程序的系统和方法包括用户定义的仪器的标准硬件序列和分析模块命令，其中 系统中内置了命令执行和资源可用性的协调，作为其整体架构的固有部分。 因此，这些命令与通常以零碎方式执行的命令相同，但是现在通过本发明的实施例的协调的相互作用以原子和确定性方式自动并顺序执行。