Versatile emulation of antenna correlation coefficient as MIMO OTA figure of merit using mode-stirred reverberation chambers

2012 ◽  
Author(s):  
Paul Hallbjorner ◽  
Juan D. Sanchez-Heredia ◽  
Antonio M. Martinez-Gonzalez ◽  
Adoracion Marin-Soler ◽  
David A. Sanchez-Hernandez
Keyword(s):  
Correlation Coefficient ◽  
Figure Of Merit ◽  
Antenna Correlation ◽  
Reverberation Chambers

scholarly journals Mode-Stirred Chamber Sample Selection Technique Applied to Antenna Correlation Coefficient

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Paul Hallbjörner ◽  
Juan D. Sánchez-Heredia ◽  
Antonio M. Martínez-González
Keyword(s):  
Correlation Coefficient ◽  
Sample Selection ◽  
Theoretical Background ◽  
Raw Data ◽  
Selection Technique ◽  
Antenna Measurements ◽  
Antenna Correlation ◽  
Excellent Tool ◽  
Mathematical Relations ◽  
Chamber Technique

Mode-stirred chambers provide an excellent tool for antenna characterization. Recent research has focused on making the mode-stirred chamber technique more versatile. One result of these efforts is the sample selection technique, by which a subset of data with specific properties is extracted from a measured set of raw data. This paper presents how to apply the sample selection technique to measurements of the correlation coefficient in dual antenna measurements, for example, for diversity or MIMO applications. Theoretical background and useful mathematical relations are presented. The application is verified through measurements.

scholarly journals Employing correlation for wireless components and device characterization in reverberation chambers

2019 ◽  
Vol 8 (1) ◽  
pp. 185-194
Author(s):  
Christoph Cammin ◽  
Dmytro Krush ◽  
Ralf Heynicke ◽  
Gerd Scholl
Keyword(s):  
Correlation Coefficient ◽  
The Novel ◽  
Frequency Range ◽  
Radiation Characteristics ◽  
Reference Equipment ◽  
Mean Values ◽  
Novel Approach ◽  
Complex Correlation ◽  
Measured Sample ◽  
Reverberation Chambers

Abstract. Reverberation chambers are well-proven test environments for radio frequency (RF) measurements. Typically, mean values are taken from the measurements to characterize the equipment under test. In the novel approach presented in this paper, the correlation of measured sample sequences is utilized to detect deviations, in particular of the radiation characteristics, from reference equipment. This approach is exemplified by a measurement setup using several different antennas with the same housing. The complex correlation coefficient and the correlation coefficient with respect to the transferred power of two measured sample sequences are calculated and evaluated for a suitable frequency range to detect differences between the radiation characteristics.

scholarly journals Parametric Testing of Metasurface Stirrers for Metasurfaced Reverberation Chambers

Sensors ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 976
Author(s):  
Hengyi Sun ◽  
Changqing Gu ◽  
Zhuo Li ◽  
Qian Xu ◽  
Mengmeng Wei ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Cross Sections ◽  
Correlation Coefficients ◽  
Random Arrangement ◽  
Different Types ◽  
Unit Cells ◽  
Field Uniformity ◽  
Parametric Testing ◽  
Reverberation Chambers ◽  
Scattering Cross Sections

In this paper, the correlation coefficients and the total scattering cross sections (TSCSs) for different types of metasurfaced stirrers and the traditional metallic stirrer, and the effects on field uniformity when such stirrers are used in reverberation chambers, are analyzed. Three metasurfaced stirrers are considered: A stirrer with two unit cells arranged alternatively (#1), a stirrer with two unit cells arranged in a chessboard-like manner (#2), and a stirrer with two unit cells in random arrangement (#3). From the correlation coefficient and TSCS results obtained in simulations, it follows that metasurfaced stirrer #1 is the best option. Field uniformity analysis of the resulting metasurface reverberation chambers (MRC) equipped with the different stirrers also supports this conclusion.

scholarly journals Estimation of Antenna Correlation Coefficient of N -Port Lossy MIMO Array

ETRI Journal ◽  
2018 ◽  
Vol 40 (3) ◽  
pp. 303-308
Author(s):  
Susilo Ady Saputro ◽  
Satya Nandiwardhana ◽  
Jae-Young Chung
Keyword(s):  
Correlation Coefficient ◽  
Antenna Correlation

Seti Figure of Merit

1997 ◽  
Vol 161 ◽  
pp. 711-717 ◽  
Author(s):  
John W. Dreher ◽  
D. Kent Cullers
Keyword(s):  
Figure Of Merit ◽  
Qualitative Difference ◽  
Current Generation ◽  
Detection Range ◽  
Sky Surveys ◽  
Independent Observations ◽  
Good For

AbstractWe develop a figure of merit for SETI observations which is anexplicitfunction of the EIRP of the transmitters, which allows us to treat sky surveys and targeted searches on the same footing. For each EIRP, we calculate the product of terms measuring the number of stars within detection range, the range of frequencies searched, and the number of independent observations for each star. For a given set of SETI observations, the result is a graph of merit versus transmitter EIRP. We apply this technique to several completed and ongoing SETI programs. The results provide a quantitative confirmation of the expected qualitative difference between sky surveys and targeted searches: the Project Phoenix targeted search is good for finding transmitters in the 109to 1014W range, while the sky surveys do their best at higher powers. Current generation optical SETI is not yet competitive with microwave SETI.

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