TY - JOUR
T1 - Forward Scattering of Loaded and Unloaded Antennas
AU - Gustafsson, Mats
AU - Andersen, Jørgen Bach
AU - Kristensson, Gerhard
AU - Pedersen, Gert Frølund
PY - 2012/8/20
Y1 - 2012/8/20
N2 - Forward scattering of antennas is related to antenna performance via the forward-scattering sum rule. The forward-scattering sum rule is an integral identity that shows that a weighted integral of the extinction cross section over all spectrum is proportional to the static polarizability of the antenna structure. Here, the forward-scattering sum rule is experimentally verified for loaded, short-circuit, and open-circuit cylindrical dipole antennas. It is also shown that the absorption efficiency cannot be greater than 1/2 for reciprocal linearly polarized lossless matched antennas with a symmetric radiation pattern in the forward and backward directions.
AB - Forward scattering of antennas is related to antenna performance via the forward-scattering sum rule. The forward-scattering sum rule is an integral identity that shows that a weighted integral of the extinction cross section over all spectrum is proportional to the static polarizability of the antenna structure. Here, the forward-scattering sum rule is experimentally verified for loaded, short-circuit, and open-circuit cylindrical dipole antennas. It is also shown that the absorption efficiency cannot be greater than 1/2 for reciprocal linearly polarized lossless matched antennas with a symmetric radiation pattern in the forward and backward directions.
UR - http://www.scopus.com/inward/record.url?scp=84870872514&partnerID=8YFLogxK
U2 - 10.1109/TAP.2012.2214191
DO - 10.1109/TAP.2012.2214191
M3 - Journal article
SN - 0018-926X
SP - 5663
EP - 5668
JO - I E E E Transactions on Antennas and Propagation
JF - I E E E Transactions on Antennas and Propagation
ER -