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Over the air measurements meeting a gain flatness criterion

A gain flatness, standard technology, applied in the field of test equipment, to improve measurement accuracy, avoid parasitic effects and transient behavior, and shorten measurement time

Pending Publication Date: 2021-12-17
蓝博测试有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the RIMP environment affects the results of certain types of measurements, such as measurements of error vector magnitude (EVM), that are typically performed in a more anechoic environment

Method used

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  • Over the air measurements meeting a gain flatness criterion
  • Over the air measurements meeting a gain flatness criterion
  • Over the air measurements meeting a gain flatness criterion

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Embodiment Construction

[0027] Aspects of the present disclosure will now be described more fully with reference to the accompanying drawings. However, the various apparatus and methods disclosed herein may be implemented in many different forms and should not be construed as limited to the aspects set forth herein. Like reference numerals refer to like elements throughout the drawings.

[0028] The terms used herein are used only to describe aspects of the present disclosure and are not intended to limit the present invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

[0029] As mentioned above, a reverberation chamber (RC) provides a straightforward solution for testing wireless systems in multipath propagation scenarios. RC is particularly well-suited for testing devices that rely on multipath signal propagation to and from multiple antennas at the transmitter and receiver to communicat...

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Abstract

A method for measuring performance of at least one DUT (120) in a reverberation chamber (110) over a frequency band, the method comprising, iteratively; generating a fading scenario by the reverberation chamber (110), identifying at least one measurement sub-band comprised in the frequency band, wherein the at least one measurement sub-band complies with a gain flatness criterion, measuring performance of the at least one DUT (120) in the at least one identified measurement sub-band, thereby generating at least one performance measurement result, accumulating the at least one performance measurement result, and determining measurement coverage and terminating the performance measurement in case the measurement coverage meets a coverage criterion.

Description

technical field [0001] The present disclosure generally relates to test equipment for antenna arrangements and wireless devices. Systems and methods for measuring performance of antenna systems and for testing wireless devices are also disclosed. Background technique [0002] A reverberation chamber (RC), also known as an electromagnetic reverberation chamber (ERC) or a mode stirred chamber (MSC), has become an effective tool for measuring the over-the-air (OTA) performance of various wireless devices. RC is primarily used to evaluate antenna system performance in RF reflective environments (ie, when the device under test (DUT) is subjected to multipath propagation). [0003] In RC, the signal is injected or picked up by a test antenna arrangement in a closed chamber or cavity that includes inwardly facing RF reflective walls. The injected signal reaches the DUT after multiple reflections from many different traces. This produces a radio frequency signal fading condition ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08G01R31/302G01R31/308G01R31/317
CPCG01R29/0821G01R29/0892G01R31/302G01R31/308G01R29/10G01R29/0878G01R29/0871H01Q17/008G01R29/0814G01R29/105H01Q17/00H04B17/00H04B17/29H04B17/3911H04L1/203
Inventor 佩德·马尔姆勒夫罗伯特·雷哈马尔
Owner 蓝博测试有限公司