Unlock instant, AI-driven research and patent intelligence for your innovation.

Over the air calibration and testing of beamforming-based multi-antenna devices in anechoic and non-anechoic environments

A technology for equipment testing, beamforming, applied in diversity/multi-antenna systems, antenna radiation patterns, measurement devices, etc., which can solve problems such as difficult, non-destructive testing or calibration impossibility

Active Publication Date: 2020-05-12
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, nondestructive testing or calibration of device components (e.g., antennas, beamforming networks, and down / upconverters, etc.) becomes impossible or very difficult

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Over the air calibration and testing of beamforming-based multi-antenna devices in anechoic and non-anechoic environments
  • Over the air calibration and testing of beamforming-based multi-antenna devices in anechoic and non-anechoic environments
  • Over the air calibration and testing of beamforming-based multi-antenna devices in anechoic and non-anechoic environments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] In the following description, the same or equivalent elements or elements having the same or equivalent functions are denoted by the same or equivalent reference numerals.

[0049] In the following description, numerous details are set forth in order to provide a more thorough explanation of embodiments of the invention. It will be apparent, however, to one skilled in the art that embodiments of the invention may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form, rather than in detail, in order not to obscure the embodiments of the invention. Furthermore, features of different embodiments described below may be combined with each other unless explicitly stated otherwise.

[0050]RF components (e.g., antennas, antenna ports, RF ports, beamforming networks, Tx modules (Tx= Transmitter) or Rx Module (Rx=Receiver)) method embodiments before referring to Figure 6 , Figure 7a and Figure 7...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Embodiments provide a method for wirelessly calibrating / testing RF and digital components of a multi-antenna device under test. The method comprises the step of wirelessly transmitting a first signaling information between the device under test and a device tester, the first signaling information indicating a calibration request, wherein the first signaling information is transmitted by the deviceunder test or the device tester. Further, the method comprises the step of estimating, in response to the first signaling information, channel transfer function matrices between active antenna ports / RF ports of the device under test and antenna ports of the device tester using reference signals wirelessly transmitted between the device tester and the device under test or vice versa. According toa first alternative, the method further comprises a step of wirelessly transmitting precoded reference signals between the device tester and the device under test using precoder matrices selected or determined based on the estimated channel transfer function matrices or the information derived therefrom. According to a second alternative, the method comprises a step of selecting or estimating equalizer matrices using the estimated channel transfer function matrices or the information derived therefrom.

Description

technical field [0001] Embodiments relate to methods for wirelessly calibrating a multi-antenna transceiver of a device under test, in particular, methods for wirelessly calibrating a beamforming network and / or transceiver module (Rx module and / or Tx module) of a device under test . Some embodiments relate to the calibration and testing of hybrid analog / digital beamforming based multi-antenna devices in anechoic and non-anechoic environments. Background technique [0002] Wireless communication devices equipped with multiple antennas must be calibrated and tested for overall performance and consistency. [0003] A well-known method of device testing is so-called conducted testing (CT), in which the antenna of the device is disconnected from the device under test (DUT) and the device tester is directly connected to the DUT. In this conducted test, no wireless transmission is performed between the DUT and the device tester. This test setup, in its simplicity, does not take ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/10H04B7/02H04B17/00
CPCG01R29/10H04B7/0413H04B17/21H04B17/0085H04B17/0087H04B17/12G01R29/105
Inventor 马库斯·格罗斯曼马库斯·兰德曼克里斯托弗·席尔默
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV