Scaling Factor for Turn-Table Platform Stirring in Reverberation Chamber

Chen, Xiaoming

doi:10.1109/lawp.2017.2747768

Cited by 11 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where R is the distance between the antenna on the platform to the centre of the platform and α is a scaling factor that is found empirically by curve fitting in [9]. The value of the scaling factor was further verified in [28]. Good agreement between the uncertainty model (6) and the empirical STD is observed in [9].…”

Section: K-factor-based Uncertainty Modelmentioning

confidence: 75%

“…It is worth noting that the rotating stirrer only needs a motor, whereas the translating stirrer requires both motor and translating belt and, therefore, is more mechanically complex. (Nevertheless, the translating plate allows more testing space and it can be combined with the platform string [28] to ensure good uniformity [9].) As a result, tremendous efforts have been exerted to optimise the design of rotating stirrers, e.g.…”

Section: Mode Stirrermentioning

confidence: 99%

“…The source stirring [10,11] is an effective way to improve the measurement uncertainty (especially when the uniformity of the RC is degraded due to loading) [29]. Source stirring in the RC is realised by switching between different antennas or moving a single antenna around via a turn-table platform [28]. The latter is referred to as platform stirring, while the former is called antenna stirring.…”

Section: Source Stirringmentioning

confidence: 99%

See 2 more Smart Citations

Measurement uncertainty of RC and its reduction techniques for OTA tests: a review

Chen

2019

IET Microwaves, Antennas & Propagation

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: K-factor-based Uncertainty Modelmentioning

confidence: 75%

Section: Mode Stirrermentioning

confidence: 99%

Section: Source Stirringmentioning

confidence: 99%

See 1 more Smart Citation

Measurement uncertainty of RC and its reduction techniques for OTA tests: a review

Chen

2019

IET Microwaves, Antennas & Propagation

Self Cite

View full text Add to dashboard Cite

show abstract

“…The turn-table platform has been previously employed as a type of source stirrer to increase the uniformity of a field [3]. A turn-table platform with a diameter of 50 cm was placed on the cavity; the surface was composed of a conductive metal.…”

Section: Stirrers and Turn-table Platformmentioning

confidence: 99%

“…Previously, extensive researches on RC characteristics have been performed in [1]- [8]. In [1], the basic theory of the RC was described in details, and further studies including angular-temporal spectra [2], the scaling factor for spatial stirring [3], source stirring [4], [5], and correlations [7], [8] have been reported. Recently, many studies aimed at achieving a radio frequency (RF) OTA test in the RC have been published.…”

Section: Introductionmentioning

confidence: 99%

A Novel Mode-Stirred Reverberation Chamber Design for 5G Millimeter Wave Bands

et al. 2021

View full text Add to dashboard Cite

A novel mode-stirred reverberation chamber (RC) is designed and analyzed for millimeter wave bands. The size of the proposed RC with dimensions of 0.9 m◊0.9 m◊1.1 m is suitable for user equipment (UE) tests. Two Zshaped mode-stirrers are applied to generate a uniform field. To fulfill the communication and test requirements for user equipment, reference, measurement and link antennas with a large bandwidth are utilized, which can support both the frequency range (FR) 1 and FR2 bands of the 5G spectrum. The lowest usable frequency (LUF) and mode density were first calculated and examined. Then, the power transfer function (PTF) from 2 GHz to 40 GHz was obtained to verify the path loss. Three measurement campaigns were carried out to verify the accuracy of the RC. Firstly, the transmission power of the passive antenna for a conductive test was compared with the RC over the air (OTA) total radiated power (TRP) for single-tone signals. Then, signals with bandwidths of 100 MHz and 400 MHz were applied. A maximum power difference of only 0.8 dB was found in the above two experiments. Furthermore, the TRP for the same commercial 5G UE in both RC and compact antenna test range (CATR) systems was measured and compared. To the best of the authors' knowledge, this is the first work to provide TRP results for 5G millimeter wave bands in a RC. The test results show that the TRP values for the two systems are almost the same with a maximum deviation of 0.5 dB, while the time required to carry out tests using the RC is lower than that for the CATR system. INDEX TERMS reverberation chamber, millimeter wave, OTA, TRP.

show abstract

Robust Plane Wave Generator Design in Small Anechoic Chamber Setup Using Parameterized Field Method

et al. 2020

View full text Add to dashboard Cite

Plane Wave Generator (PWG) has attracted great research interest in the industry and academia for sub-6 GHz massive MIMO base station (BS) measurement, thanks to its low-cost and smaller system setup. One major concern in the small setup is its high reflectivity level inside the anechoic chamber, which might distort the quiet zone performance significantly. Meanwhile, it is critical that the quiet zone performance is insusceptible to system inaccuracies. However, these two aspects are largely overlooked in the plane wave synthesis (PWS) study in the literature. In this paper, a new PWS strategy is proposed based on parametrized field distribution over an enlarged sampling area. The proposed method offers robust design and low reflectivity level. The effectiveness and robustness of the proposed PWS strategy is demonstrated in a numerical simulation. INDEX TERMS Excitation coefficient optimization, over-the-air testing, plane wave generators, small anechoic chamber.

show abstract

Scaling Factor for Turn-Table Platform Stirring in Reverberation Chamber

Cited by 11 publications

References 12 publications

Measurement uncertainty of RC and its reduction techniques for OTA tests: a review

Measurement uncertainty of RC and its reduction techniques for OTA tests: a review

A Novel Mode-Stirred Reverberation Chamber Design for 5G Millimeter Wave Bands

Robust Plane Wave Generator Design in Small Anechoic Chamber Setup Using Parameterized Field Method

Contact Info

Product

Resources

About