TY - GEN
T1 - Impact of lossy feed on S-parameter based envelope correlation coefficient
AU - Narbudowicz, Adam
AU - Ammann, Max J.
AU - Heberling, Dirk
N1 - Publisher Copyright:
© 2016 European Association of Antennas and Propagation.
PY - 2016/5/31
Y1 - 2016/5/31
N2 - Envelope correlation coefficient is a key parameter for MIMO antennas, allowing assessment of the signal correlation between multiple input/outputs of an antenna system. A simplified method allows calculation of this coefficient by using only S-parameters, however the method is less accurate and only applies to lossless antennas. This paper discusses a possible correction to the above method, for the case where the losses occur in the feed cable and not in the antenna itself. A lossless MIMO antenna system with lossy feeds is discussed, both analytically and using simulation tools. It is shown, that even losses as small as 0.3 dB can lead to substantial underestimation of the coefficient. A new equation is proposed, which compensates for the lossy feeds. It is also demonstrated, that even for a lossless case, some discrepancies exist between the two commonly used methods to calculate envelope correlation coefficient.
AB - Envelope correlation coefficient is a key parameter for MIMO antennas, allowing assessment of the signal correlation between multiple input/outputs of an antenna system. A simplified method allows calculation of this coefficient by using only S-parameters, however the method is less accurate and only applies to lossless antennas. This paper discusses a possible correction to the above method, for the case where the losses occur in the feed cable and not in the antenna itself. A lossless MIMO antenna system with lossy feeds is discussed, both analytically and using simulation tools. It is shown, that even losses as small as 0.3 dB can lead to substantial underestimation of the coefficient. A new equation is proposed, which compensates for the lossy feeds. It is also demonstrated, that even for a lossless case, some discrepancies exist between the two commonly used methods to calculate envelope correlation coefficient.
KW - MIMO antenna
KW - envelope correlation coefficient
UR - http://www.scopus.com/inward/record.url?scp=84979217726&partnerID=8YFLogxK
U2 - 10.1109/EuCAP.2016.7481596
DO - 10.1109/EuCAP.2016.7481596
M3 - Conference contribution
AN - SCOPUS:84979217726
T3 - 2016 10th European Conference on Antennas and Propagation, EuCAP 2016
BT - 2016 10th European Conference on Antennas and Propagation, EuCAP 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th European Conference on Antennas and Propagation, EuCAP 2016
Y2 - 10 April 2016 through 15 April 2016
ER -