Title :
Response of retrodirective array in the presence of multiple spatially separated sources
Author :
Fusco, Vincent F.
Author_Institution :
Inst. of Electron. Commun. & IT, Queen´´s Univ. of Belfast, UK
fDate :
4/1/2006 12:00:00 AM
Abstract :
In this paper, we describe a canonical proof based on the use of multiport scattering parameters which shows that in the presence of multiple coupling paths between elements that is not possible to individually control the power returned to each transmitter in a retrodirective array which is responding to stimulation by multiple transmitters. It is proven that it is not possible to maximize retransmission to only one of the transmission elements at the expense of the others if more than one transmitter is broadcasting, nor is it possible to simultaneously equalize the signal sent to all k broadcasting antennas when they each transmit unequal power levels.
Keywords :
S-parameters; antenna arrays; broadcast antennas; directive antennas; electromagnetic coupling; electromagnetic wave scattering; multiport networks; transmitting antennas; broadcasting antenna; canonical proof; multiple coupling path; multiple spatial separated source; multiple transmitter; multiport scattering parameter; retrodirective array; Adaptive arrays; Antenna arrays; Beam steering; Broadcasting; Couplings; Frequency; Phased arrays; Scattering parameters; Transmitters; Transmitting antennas; Multiple sources; retro-directive array; self-phasing array;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.872652
