

ElectroDynamic Systems Software Scientific^{TM} Antenna Systems Research^{TM} Radiolocation Systems Research^{TM} Antenna array Complex directional antenna consists of separate nearomnidirectional antennas (radiating elements) positioned in the space and driven by highfrequency … (from 'Glossary' of our web–site) 
Articles for 2006Thursday, December 14, 2006 at 12:12AM
Presents frequency dependencies of surface impedance near an array of rectangular waveguides when incident to flat electromagnetic wave, computed on a PC are shown. When placing radiant strips over an optimized waveguide array, contact ratio in frequency up to 2 and more in sector of angles ±55° in main planes can be obtained.
Wednesday, February 08, 2006 at 12:02AM
The explained method allows for building an efficient algorithm of calculating characteristics of block phased arrays intended for scanning in a limited sector of angles and normal phased arrays with elementwise phasing considering interaction of radiators in the outside space and power wiring circuits.
The given numerical results show the possibility of considering the influence of the attenuator when designing phased antenna arrays. Sunday, February 05, 2006 at 12:02AM
The results of the research of characteristics of a finite slot phased array are given. It is shown that boundary waves cause significant change of a side radiation in large arrays when the beam deviation in a single scan sector is at maximum. In small arrays these changes are related primarily to the regular part of the current, which is described by interaction of radiators in the infinite array.
Tuesday, January 31, 2006 at 12:01AM
Results of research of characteristics of printedcircuit vibrator radiators in plane infinite and finite phased arrays. When researching electrodynamical characteristics of the vibrator radiator, the charge method is used. To determine the direction diagram in the finite array, the boundary wave method is used along with the results of modeling of the infinite vibrator phased array.
Friday, January 13, 2006 at 12:01AM
Boundary effects in finite antenna arrays as a result of interference of unperturbed array field and boundary wave field, excited at the boundary of the array are researched. The boundary wave equation is derived and the iterative method of solving it is suggested. Numerical results are supplied.

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