Open AccessMeasurement uncertainty of RC and its reduction techniques for OTA tests: a review
Author(s) -
Chen Xiaoming
Publication year - 2019
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2018.6054
Subject(s) - electromagnetic reverberation chamber , measurement uncertainty , power consumption , reduction (mathematics) , reliability engineering , computer science , electronic engineering , internet of things , engineering , reverberation , power (physics) , electrical engineering , embedded system , mathematics , physics , statistics , geometry , quantum mechanics
The emerging machine‐to‐machine (M2M) communications and Internet‐of‐things techniques bring new challenges in over‐the‐air (OTA) tests. The inexpensive M2M device usually aims at low‐cost and low‐power consumption rather than high data rate and, therefore, is usually equipped with a single antenna. Testing such M2M device in massive production requires efficient and cost‐effective OTA techniques. The reverberation chamber (RC) is a suitable solution for such tests of M2M (especially large‐form‐factor) devices. Since RC measurements are in essence stochastic measurements (with repeatable results), uncertainty analyses are of primary importance. This study gives an overview of the start‐of‐the‐art research on measurement uncertainty for both conventional and M2M OTA applications. In addition, new results about mode stirrers and diffusers (for uncertainty reduction) are provided.