公开(公告)号：US20240361367A1

公开(公告)日：2024-10-31

申请号：US18143886

申请日：2023-05-05

Applicant: LitePoint Corporation

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

IPC: G01R23/18 ,  G01R27/30 ,  G01R29/26

CPC classification number: G01R23/18 ,  G01R27/30 ,  G01R29/26

Abstract: An example method includes 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 and intermodulation interference; (iv) obtaining a power spectral density value, where the power spectral density value comprises a power, at a frequency value, of a combined signal that is based on the attenuated device signal, the noise signal, and the intermodulation interference; (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.

公开(公告)号：US20230370174A1

公开(公告)日：2023-11-16

申请号：US17743218

申请日：2022-05-12

Applicant: LitePoint Corporation

Inventor： Minh-Chau HUYNH

IPC: H04B17/10 ,  H04B17/318 ,  H04B17/14 ,  H04B7/0413

CPC classification number: H04B17/102 ,  H04B17/318 ,  H04B17/14 ,  H04B7/0413

Abstract: A system is configured to test a device. The device is or includes a MIMO wireless device having antennas. The antennas include at least two antennas for receiving or transmitting. The system includes a test instrument and probes having wired connections to the test instrument over which signals are communicated between the probes and the test instrument. A probe is configured to communicate signals with an antenna on the device wirelessly in a reactive near-field region of the antenna.

公开(公告)号：US10666538B2

公开(公告)日：2020-05-26

申请号：US14721598

申请日：2015-05-26

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard

IPC: H04L12/26 ,  H04L1/20 ,  H04W24/00

Abstract: Method for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) via a wireless signal medium that enables final functional testing of a fully assembled DUT without requiring wired signal connections. System performance characteristics indicative of manufacturing assembly defects, such as defective antennas or subsystem connections, can be performed using over the air (OTA) test signals communicated wirelessly between the DUT and a tester. By using actual DUT performance characteristics determined during earlier manufacturing tests, such as receiver sensitivity and transmitter power, and known power levels available from the tester transmitter, the OTA signal path loss (i.e., attenuation of the wireless signal) can be estimated and used to confirm the final state of system operation.

公开(公告)号：US20200021369A1

公开(公告)日：2020-01-16

申请号：US16036432

申请日：2018-07-16

Applicant: LitePoint Corporation

Inventor： Minh-Chau Huynh ,  Christian Volf Olgaard

IPC: H04B17/10 ,  G01R29/10 ,  H04B17/17 ,  H04B17/18 ,  H04B17/391 ,  H04B17/29

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. A comparison of this reconstructed signal spectrum with a reference signal spectrum radiated from the surface of a known good antenna array enables detection of faulty antenna elements within the AUT.

公开(公告)号：US10084555B1

公开(公告)日：2018-09-25

申请号：US15464607

申请日：2017-03-21

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard ,  Ke Liu ,  Ruizu Wang

IPC: H04B17/29 ,  H04B17/318 ,  H04W24/08

Abstract: A method for estimating receiver sensitivity of a radio frequency (RF) data packet signal transceiver device under test that relies upon beacon request and response data packets for enabling communication links.

公开(公告)号：US09774406B2

公开(公告)日：2017-09-26

申请号：US13912423

申请日：2013-06-07

Applicant: LITEPOINT CORPORATION

Inventor： Minh-Chau Huynh

IPC: H04B17/00 ,  H04B17/29

CPC classification number: H04B17/29

Abstract: A system and method for facilitating wireless testing of a radio frequency (RF) signal transceiver device under test (DUT). Using multiple antennas within a shielded enclosure containing the DUT, multiple wireless RF test signals resulting from a RF test signal radiated from the DUT can be captured and have their respective signal phases controlled in accordance with one or more signal characteristics, including their respective signal power levels, their respective signal phases as received, and a signal power level of a combination of the received signals. Such phase control of the captured wireless RF test signals can be performed individually for any DUT tested within the shielded enclosure, thereby providing compensation for the multipath signal environment within the shielded enclosure irrespective of the placement of the DUT, and thereby simulating a wired test signal path during wireless testing of the DUT.

公开(公告)号：US09749066B2

公开(公告)日：2017-08-29

申请号：US14852814

申请日：2015-09-14

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard ,  Ruizu Wang ,  Ke Liu ,  Fei Peng

IPC: H04B17/17 ,  H04B17/00

CPC classification number: H04B17/17 ,  H04B17/0085

Abstract: Method for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) including communicating via each one of multiple available signal channels. Data packets exchanged between a tester and DUT as a normal part of a communication link initiation sequence are exchanged in such a manner that the tester transmits via all available channels simultaneously, thereby ensuring that a properly working DUT will always transmit in response. For example, in the case of a Bluetooth low energy transceiver, advertisement, scan request and scan response data packets can be used in such manner.

公开(公告)号：US20170078030A1

公开(公告)日：2017-03-16

申请号：US14852803

申请日：2015-09-14

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD ,  Ruizu Wang ,  Ke Liu ,  Fei Peng

IPC: H04B17/17 ,  H04W24/06

CPC classification number: H04B17/17 ,  H04B17/0085 ,  H04B17/14 ,  H04W24/06 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144

Abstract: Method for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) including communicating via at least one of multiple available signal channels. Data packets exchanged between a tester and DUT as a normal part of a communication link initiation sequence are selectively exchanged and suppressed to enable testing of the DUT without requiring inclusion of special drivers within the DUT, special test software within the tester or establishment of a synchronized communication link between the tester and DUT. For example, in the case of a Bluetooth low energy transceiver, advertisement, scan request and scan response data packets can be used in such manner.

Abstract translation: 用于测试包括通过多个可用信号信道中的至少一个进行通信的被测试射频（RF）数据分组信号收发器设备（DUT）的方法。 选择性地交换和抑制在测试仪和DUT之间交换的数据分组作为通信链路启动序列的正常部分，以便能够在DUT内测试DUT，而不需要在DUT内部包含特殊驱动器，测试器内的特殊测试软件或同步的建立 测试仪和DUT之间的通讯连接。 例如，在蓝牙低能量收发机的情况下，可以以这种方式使用广告，扫描请求和扫描响应数据分组。

公开(公告)号：US20150192639A1

公开(公告)日：2015-07-09

申请号：US14147159

申请日：2014-01-03

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD

IPC: G01R31/3177

CPC classification number: G01R31/3177 ,  G01M11/00 ,  H04B10/00 ,  H04B10/0731

Abstract: A system and method for testing a wireless data packet signal transceiver device under test (DUT) by using DUT control circuitry separate from a tester to access and execute test program instructions for controlling the DUT during testing with the tester. The test program instructions can be provided previously and stored for subsequent access and execution under control of the tester or an external control source, such a personal computer. Alternatively, the test program instructions can be provided by the tester or external control source immediately prior to testing, such as when beginning testing of a DUT with new or different performance characteristics or requirements. Accordingly, specialized testing of different DUTs while accounting for differences among various chipsets employed by the DUTs can be performed in coordination with a standard tester configuration without need for reconfiguring or reprogramming of the tester.

Abstract translation: 一种用于通过与测试仪分离的DUT控制电路来测试无线数据分组信号收发器设备（DUT）的系统和方法，以在测试仪测试期间访问并执行用于控制DUT的测试程序指令。 测试程序指令可以先前提供并存储以用于在测试器或外部控制源（例如个人计算机）的控制下的后续访问和执行。 或者，测试程序指令可以在测试之前由测试者或外部控制源提供，例如当开始具有新的或不同的性能特征或要求的DUT的测试时。 因此，可以与标准测试仪配置协调地执行不同DUT的专门测试，同时考虑DUT所使用的各种芯片组之间的差异，而不需要重新配置或重新编程测试仪。

公开(公告)号：US20150139023A1

公开(公告)日：2015-05-21

申请号：US14082378

申请日：2013-11-18

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf OLGAARD ,  Ruizu WANG

IPC: H04L12/26

CPC classification number: H04L43/50 ,  H04W24/06

Abstract: A system and method for testing one or more wireless data packet signal transceiver devices under test (DUTs). Incoming data packets from a DUT are monitored to discern between data packets transmitted as part of a DUT calibration cycle or initial data packets being transmitted as the DUT transmitter circuitry settles at its new settings (e.g., transmit signal frequency or power), and later data packets transmitted following completion of the DUT calibration cycle or settling of the DUT transmitter circuitry. Following identification of these later data packets, the tester is so notified and begins the test procedure, e.g., capturing the data packets for analysis. Meanwhile, the tester has been allowed to remain in active use for other test purposes during DUT calibration cycles and settling intervals, thereby increasing testing efficiency and reducing overall test time.

Abstract translation: 一种用于测试被测试的一个或多个无线数据分组信号收发器设备（DUT）的系统和方法。 监视来自DUT的传入数据分组，以便在作为DUT校准周期的一部分发送的数据分组或当DUT发射机电路以其新设置（例如，发射信号频率或功率）稳定时）发送的初始数据分组之间进行辨别，以及稍后的数据 在DUT校准周期完成之后发送的数据包或DUT发射机电路的稳定。 在识别这些稍后的数据分组之后，测试者被通知并开始测试过程，例如捕获用于分析的数据分组。 同时，在DUT校准周期和稳定间隔期间，测试仪被允许保持主动用于其他测试目的，从而提高测试效率并降低整体测试时间。