TY - GEN

T1 - Spherical field transformation for hemispherical antenna measurements above perfectly conducting ground planes

AU - Mauermayer, Raimund A.M.

AU - Eibert, Thomas F.

N1 - Publisher Copyright:
© 2016 AMTA.

PY - 2017/1/4

Y1 - 2017/1/4

N2 - The spherical multipole based near-field far-field transformation is extended to near-field antenna measurements above a perfectly electrically conducting (PEC) ground plane. As the effect of the ground plane is considered in the transformation by applying the image principle to the spherical modes radiated by the device under test (DUT), the near-field measurement points above the ground plane are sufficient to fully characterize the radiation behavior of the DUT above PEC ground. The nonequispaced fast Fourier transform (NFFT) is employed in the forward operator of the inverse problem in order to apply the transformation to e.g. spiral scans which are favorable to large and heavy scanner systems. If the elevation axis is located above or below the ground plane, an additional translation operator is integrated into the transformation to consider such an offset in the mechanical system. The proposed method is applied to synthetic and simulated automotive antenna near-field data in order to show its effectiveness.

AB - The spherical multipole based near-field far-field transformation is extended to near-field antenna measurements above a perfectly electrically conducting (PEC) ground plane. As the effect of the ground plane is considered in the transformation by applying the image principle to the spherical modes radiated by the device under test (DUT), the near-field measurement points above the ground plane are sufficient to fully characterize the radiation behavior of the DUT above PEC ground. The nonequispaced fast Fourier transform (NFFT) is employed in the forward operator of the inverse problem in order to apply the transformation to e.g. spiral scans which are favorable to large and heavy scanner systems. If the elevation axis is located above or below the ground plane, an additional translation operator is integrated into the transformation to consider such an offset in the mechanical system. The proposed method is applied to synthetic and simulated automotive antenna near-field data in order to show its effectiveness.

UR - http://www.scopus.com/inward/record.url?scp=85011068477&partnerID=8YFLogxK

U2 - 10.1109/AMTAP.2016.7806274

DO - 10.1109/AMTAP.2016.7806274

M3 - Conference contribution

AN - SCOPUS:85011068477

T3 - AMTA 2016 Proceedings

BT - AMTA 2016 Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2016 Antenna Measurement Techniques Association, AMTA 2016

Y2 - 30 October 2016 through 4 November 2016

ER -