公开(公告)号：US10009126B2

公开(公告)日：2018-06-26

申请号：US14966761

申请日：2015-12-11

Applicant: LITEPOINT CORPORATION

Inventor： Christian Volf Olgaard ,  Ruizu Wang ,  Zhiyong Huang

IPC: H04B17/29 ,  H04L12/26 ,  H04B17/00

CPC classification number: H04B17/29 ,  H04B17/0085 ,  H04L43/50

Abstract: Method for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) with multiple RF signal transmitters and RF signal receivers capable of concurrent operations. Multiple successions of test data packets from a tester to respective RF signal receivers of the DUT and multiple successions of responsive DUT data packets from respective RF signal transmitters of the DUT to the tester are conveyed such that multiple RF signal transmissions, multiple RF signal receptions, or RF signal transmission and reception are performed at least partially concurrently.

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：US10079626B1

公开(公告)日：2018-09-18

申请号：US15585831

申请日：2017-05-03

Applicant: LitePoint Corporation

Inventor： Christian Volf Olgaard ,  Zhiyong Huang

IPC: H04B7/04 ,  H04B7/06 ,  H04B17/00 ,  H04B17/24 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0456

CPC classification number: H04B7/0421 ,  H04B7/0452 ,  H04B7/046 ,  H04B7/0634 ,  H04B17/0085 ,  H04B17/24

Abstract: A method for assessing receiver signal reception performance during wireless beam steering operation of a radio frequency (RF) data packet signal transceiver capable of multiple input, multiple output (MIMO) operation. In response to transmissions of a sounding packet (SP) from a beamforming device (“beamformer”), a receiving device (“beamformee”) transmits a response data packet containing matrix data representing a beamforming feedback matrix (BFM) related to signal attenuation by the wireless signal path environment through which the beamformer and beamformee are communicating. Using the matrix data, a statistical variation can be computed which is indicative of signal reception performance of the beamformee.