TY  - GEN
A1  - Poli, Lorenzo
A1  - Rocca, Paolo
A1  - Oliveri, Giacomo
A1  - Massa, Andrea
ID  - elediasc12511
AV  - public
KW  - adaptive nulling 
KW  -  digital phase shifters 
KW  -  nonisotropic sources 
KW  -  particle swarm optimiser 
KW  -  power losses 
KW  -  pulse sequence 
KW  -  sideband radiation 
KW  -  signal-to-interference-plus-noise ratio 
KW  -  static element excitations 
KW  -  switch periodic on-off commutation 
KW  -  time-modulated linear arrays
TI  - Adaptive nulling in time-modulated linear arrays with minimum power losses
Y1  - 2011/01//
UR  - http://www.eledia.org/students-reports/511/
N2  - The synthesis of adaptive time-modulated linear arrays is dealt with by means of an innovative strategy, in which a particle swarm optimiser is used to reconfigure the pulse sequence controlling the static element excitations, as well as the least significant bits of digital phase shifters to maximise the signal-to-interference-plus-noise ratio at the receiver. The reduction of the power content of sideband radiation generated by the periodic on-off commutation of switches is addressed by customising to non-isotropic sources a very effective analytic relationship. A set of selected results is reported and discussed to show the advantages and limitations of the proposed approach. Comparisons with previously published results are also presented. "This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves, Antennas & Propagation and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5697293"
ER  -