公开(公告)号：US20240171291A1

公开(公告)日：2024-05-23

申请号：US18374053

申请日：2023-09-28

Applicant: Keysight Technologies, Inc.

Inventor： Huaizhi Yang ,  Ya Jing ,  Jin-Ming Zhao ,  Zi Quan Bai

IPC: H04B17/00 ,  H04B17/15 ,  H04B17/309

CPC classification number: H04B17/0085 ,  H04B17/191 ,  H04B17/309

Abstract: A system, device and method for optimization of a radiated transmission matrix by the selecting probe antennae and applying a compensation network in the test system are described. Among other benefits, the anechoic chamber in which the DUT is disposed is comparatively small and inexpensive. The time-consuming process of inverse matrix tuning or isolation level checking that plagues known systems, device and methods of testing DUT is substantially avoided. Because of small size of shield box and probe antenna selection algorithm, low path loss and acceptable power in testing can be realized.

公开(公告)号：US20240159865A1

公开(公告)日：2024-05-16

申请号：US18244151

申请日：2023-09-08

Applicant: Keysight Technologies, Inc.

Inventor： Zhu Wen ,  Xiong Bin Liao ,  Li Cao ,  Zi Quan Bai ,  Sheng Qi Zhang

IPC: G01S7/40 ,  G01R29/10

CPC classification number: G01S7/4008 ,  G01R29/10

Abstract: A system is provided for measuring a power radiated pattern of an incident radio frequency (RF) signal indicating spatial distribution characteristics of a device under test (DUT). The system includes multiple antenna elements arranged in an array, where the antenna elements include antennas and diodes coupled to the antennas, respectively. Each antenna has a radar cross-section (RCS) that is too small for the antenna elements to operate in a reflect mode. Each diode is zero biased, such that the diodes receive the incident RF signal through the antennas to which the diodes are respectively coupled, and rectify the incident RF signal to DC voltages that are proportional to power of the incident RF signal, enabling the antenna elements to operate in a detect mode.