公开(公告)号：US10097282B1

公开(公告)日：2018-10-09

申请号：US15881181

申请日：2018-01-26

Applicant: LitePoint Corporation

Inventor： Yen-Fang Chao ,  Christian Volf Olgaard

IPC: H04B17/10 ,  H04B17/29 ,  H04W24/06 ,  H04B17/364 ,  H04B17/00 ,  H04B17/391

Abstract: System and method for providing variable time delays with high temporal granularity and consistent broadband delay performance for testing of time-of-arrival (ToA) or angle-of-arrival (AoA) performances of radio frequency (RF) signal transceivers. Multiple delays may be imparted to a common RF signal to provide multiple delayed RF signals corresponding to RF signals originating from a source location and received at various locations having respective position coordinates relative to respective orthogonal axes, plus another delayed RF signal corresponding to a RF signal originating from the source location and received at a location at an intersection of the orthogonal axes.

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.