

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) 
All ArticlesWednesday, January 10, 2007 at 12:01AM
It is shown that when the antenna radius is increased, directive gain of spherical antenna with optimal excitation asymptotically approaches directive gain of the equivalent flat cophasal aperture with uniform amplitude–phase distribution of collinear currents. The results of approximate calculations are compared with the received strict solution.
Monday, January 01, 2007 at 12:01AM
Based on the solution of the boundary value problem for an infinite antenna array, a mathematical model of a finite flat antenna array in an infinite screen with impedance structure is built. Results of calculations are given by the example of radiant strips.
Thursday, 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.
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